Messages & Notes From
atm_free

1/20 wave Auto collimation image
1/20 Wave Autocollimation image was Opinions Solicited-18 " Cass null images
1/4" Plate
1.52" or 1.30" diagonal?
1" thick glass 42" round on e-bay(boston area only)
1 Meter f-5
1/n wave under correction
10" f/6
10" f3.6 Mirror - Tony Gondola
10" f4 mirror plus cell, spider, 2.6" secondary, spider and tube
10" Figuring Move
10" mirror, correcting
10. f3.6 Mirror . Tony Gondola
10 Inch Cassegrain Project Update
10 Inch molded Pyrex blank has divots
10” f3.6 Mirror – Tony Gondola
100 Degree Eyepiece Shootout on Super Fast Scope
1000 mot 1 wet
100mm f/10 performance
mirror making thieves, was 11 inch tool and 6 inch mirror
11 inch tool and 6 inch mirror - how to press?
12.5" Blem
12.5" Dob Collimation Strangeness Question (long
12.5" Dob Collimation Strangeness Question (long
12.5" Progress-result 3rd fig session
12.5 Cassegrain
12.5 inch mirror at 5 micron...the big huge scratch...:(.
12" Mirror Sanity Check
12" 19mm float plate and grit 60
12" f10 12mm thick
12" f7 polish help needed
12" Mirror Sanity Check
12" pyrex - onto fine grinding
12 inch light mirror- photo
reply to john 12 inch mirror
12 inch new blank soon to arrive
12mm TOOL
12V winch ideas
13 year old Asad
14" mirror with 19mm thickness
14 inch tube
14x40
15" Null test summary
16" Binos 1st light, an after action report.
16" F 4.7 mirror
16"f4.5 1.25" thick.
16" f4 nightmare
16" lens
Update on my 16" mirror casting project.....
16" Mirror blank
16" mirror lives.!!
16" mirrors on eBay
16" Thin Ronchi
16" X 1" F4.5 factory cut mirror
[ATM] 16_Bino Progress
16 inch mirror grinding
160 mm f 4.5 Mirror : Progress
160 mm Mirror Ronchigrams
18" thin mirror
18" Truss Dob Scope
18 point cell and ultra thin mirror.
18in Astrograph project, long
18in F3.6 astrograph has seen first (and second) light
1st Curve generation w/ Robo Mill
1st good test
2" Adapter
2" eyepiece advantages?
2 blanks, a jug of hooch, and M-O-M
2 Piece Poles
MY OTa 2 Piece Poles - and how trusses really work
2 small plate blank pairs 12mm thick dia 87 & 72 mm
2 wets of 320
20" / 1.25" mirror2 finished
20" cellular master mold on eBay
[SPAM] 20" equatorial almost finished
20" polishing with pads
20 inch f/3.6 telescope with Mike Lockwood mirror finished
2010 Stellafane
22" Dob project
220 1/3 overhang
ATM [VacuumX] 24" vacuum chamber is getting closer :)
25mm vs 15mm blank
29mm secondary mirror
2nd good test
Rayleigh Water Test (Was: [ATM] 30" Flats)
grit 320
35mm transfer to digital a bit off topic
3D CAD ad CAM software
3D filter howto
3D printing
3m paint tape
3rd Phase Contrast Image.
4.5"
4 micron Moon
4 routine Qs about d, fl, field of view and calculator
4 routine Qs about d, fl, field of view and calculator
4 routine Qs about d, fl, field of view and limits of seeing on an average n
40" or 1 Meter blanks
48" Dob at OMI
48" Dob Installed!!
5 inch pvc ?
5 questions: oil, mounts, knobs and collimation options.
5 telescopes project finished
fine grinding with 500(or 20mc) 12 mc 5 mc
500 another wet
500 one wet
500 TOT 2 wets
5u abraisives
6-8" cheap eBay mirrors
6'' polishing...progress check.
6" blank
6" f/11.5
6" Focallength=8ft design
6" grit 80
6" grit 80 how to spread contact area?
6" proj
6 grit 80
6 inch Chief
6 inch f-7 Re-Build UP-Date
6 pt Cell
60 mm F/10 refractor mod
60mm FinderScope installation project...
7" refractor lens
75% Field
8" Blank ?$
8" Cass Blank,
8" cassegrain problems
8" Cassegrain Project Update
8" f/10
8" f/10 mirror; folded Newt. or regrind???
8" F/4.5 Mirror for old Meade 8800
8" f3.6
Pravin Jat's 8" mirror Ronchi Test.
8" or 10" on Polaris mount
8" scope finished
Zones etc. (was: 8 Inch Cassegrain Project)
80 500
800 mot 2 wets
800 MOT one wet
87.5mm hole needed
97-99% reflective secondary mirrors
[ATM] [interferometry] a 20" dall-kirkham
a 36 ins mirror blank
A Bath interferometer used on a 40 inch F3.6 mirror [3 Attachm...
a better grade of crab and collimation tests of new cassegrain
A better phase contrast image
A bit like the Jack Wolfe design but a lot better
a bit more truss Dob & mirrormaking questions
A cause for rrror in Null Finding software
A Droid by any other name
A foucault puzzle
a great Bush?
A great loss to the group has occurred...
a little break
A little off topic - a dumpster rescue
A mirror, a homebrew and thou
A model of the Hindle Sphere test of a convex Hyperboloid
[ATM] a mystery
A new page on spherometer construction.
A new yahoo group that should be of interest
A newbie question on tube diameter
A Pitch Lap related question
A Polishing we will go!
A possible source of primary ripple.
A question for Ken Hunter!!
A question for refractor
A Question on Secondary Holder Design
A question: putting on the reflective layer yourself.
A/R coating...
Wiki was A reminder about atmsite.org
A Request for help
A rough surface mirror analysis.
A routine question about the limits of resolution.
Subject: a step in the right direction, was, points pads and scientist
A thought
a use for high school algebra, at last!
A Visit to Brookstone
aberrator 3.0
About CMOS, more or less on topic
about insurance...
about net
about the back
About the bevel
Acculap Pitch
Acculap Pitch Failure
Acculap Quantity
Achromat Doublet Color Correction
Active Cell Technology for ATM"s ??? Was ( How thin can a mirror be?)
Active Truss
actual outer diameter of 2" eyepieces?
Adaptive Optics vs Adaptive Electronics
added [NII] and [OIII] to Ha Eskimo under BAD seeing conditions
Adding a rotating upper cage to a truss tube 17.5" Newtonian???
ading lens
Adler Flexing vs parabolizing
Adventures in making an optical flat
[ATM] adventures in vacuum coating maintenance
Adverse Effects of a Poor Secondary?
[ATM] Advertisement: Quartz blanks for sale. (cross posting)
Advice for adhesive, foam to glass
Advice needed with 6" mirror
Dew Heater Advice Please
advise please
Again 2 mirror questions, this time about the tool
Age of glass pushers
air currents - fan location question
ALdo's Bath interferometer
Aldo's sample igram. [2 Attachments]
allsky fishyes or not
Almost ready for the grind!
ATM Alt-alt telescope mounts and imagerotation - long post
Alt-alt telescope mount - and image rotation
ATM Alt-alt telescope mounts and image rotation - long post
Alt-az at zenith Now Equatorials and Polar Aligment
Alt-az at zenith Now Equatorials and Polar Aligment
Alt bearing material
Altiude bearings, Zhumell 12" Dob [3 Attachments]
aluminizing
Aluminizing a mirror
aluminum mirrors
aluminum mirrors (foam cell mirrors)
Aluminum tailgate for 20"
Aluminum Truss Tube Source
Aluminum Vapor Source
amateur telescope making talk on 1-14-2012
Sv: Amici Roof Prism an abysmal failure
Amici Roof Prism NOW YOU ARE COOKING!
"A now for something entirly different" :) Astigmatism
[ATM] "animated" zone one simulation
"As simple as Bath interferometer"
"Coopered", lathe-turned, wooden telescope tubes
"Foucault Test Analysis" and "Couderma.exe"
"Grinding" away (Pun intended) :-) +plus a question
"Personally, if I valued my time . . . . . . . "
[ATM] "Telescope Mirror Blanks"
"Telescoping" struts for a Reflector
"Tuning" a wire spider?
An Ed Jones mirror in a new open truss
An Incredible Offer!
An inteferometric study of plate glass mirror edge heating
An unattainable wish
and again
and [ATM] zone one challenge
And now, for something completely different :)
Android ronchi app !
No more angry spiders...
Annealing an existing mirror, further question
Annealing an existing mirror, further question
Annealing Temperature Curve
Announcement of the Delmarva Stargazers Mirror Making Workshop #17
Powder Coating and Anodizing
Anodizing-power help,
Another 20" - 1.25" thick finished
ANother "Plop-challenged" ATM question
Another Astigmatism Question
Another atmer makes it to the Smithsonian.
another fine grind question
Another Foucault and igram comparison
Another Foucault of Hubble Optics showing the astig.
Another Inspiration
Another mirror analyzed using Foucault and interferogram analysis
Another mirror analyzed using Foucault and interferogram analysis
Another Morning After
Answers to questions on Yellow Dwarf
Antique Telescope Revisited: Gold Mirror Mystery solved!
Any Asian or Australian or Hawaiian solar Ha imagers?
Any mirror coating companies in Pennsylvania?
Any OSLO users?
Any Sources for Knobs?
Any translations of Dmitry Maksutov's books into English?
any vintage instrument we can built
Anybody building a B I G scope?
Anybody out there?
anyone have a plan for a 10" or 12" or 12.5" truss telescope ?
anyone know a good supplier
Anyone know what's up with the Got Grit website?
Anyone making small lenses?
aperture mask
apeture mask
apodize mask
Apparent obstruction during viewing
Applying Stepper Motors- a live webinar.
approx time required for figuring?
AR coatings, Apparently not always an improvement
ATM Archives
Arduino
Arduino help needed
Arduinos?
Are there any Australians here?
Argo Navis
Arnold Optics
Art's latest upload image
Art and flex
Bath interferometer was Artificial Star generator . . . . How to make one?
Arts bearings and axis
Asking again -- Hogging 16" pair-o-blanks
ASM mirror
Astatic supports (was [ATM] Ultra-Thin Edge Support ....)
asteroid watch
Fwd: Can you say astigmatism?
astigmatism chromatic abberration etc
Astigmatism During Ronchi Question
Astigmatism Images
Astigmatism interpretation
Astro Fest
Astro-Smart
AstroCats 2015
Astrograph: ATM or Upgrade Vixen R200ss?
[ATM] Astromart
Astronomy in Palm Springs or Joshua Tree National Park
Astrophotography Question
[astrouk] DEFRA: Light Pollution
ATM 120mm lens
ATM: 16" mirror & tool-
[ATM] 16_Bino Progress
[ATM] 18 point cell and ultra thin mirror.
atm 320 pits
[ATM] a mystery
[ATM] a new french ATM book
[ATM] A new page on spherometer construction.
ATM aargh! maybe
[ATM] Adventures in making an optical flat
[ATM] adventures in vacuum coating maintenance
[ATM] Advertisement: Quartz blanks for sale. (cross posting)
ATM Alt-alt telescope mounts and image rotation - long post
ATM Alt-alt telescope mounts and imagerotation - long post
[ATM] "Telescope Mirror Blanks"
ATM An Old TMs Simple Query
ATM Android Apps?
atm-ANOTHER zero power finder
ATM: Asking price for mounting
[ATM] Astromart
ATM Backlash Elimination for Leadscrew Drives
ATM : Bartelizing a Dobson
[ATM] Bath Interferometer Setup Video.
ATM Bearing inspection-
[ATM] Betr.: Size of azimuth bearings
ATM: Big pictures okay-
ATM Big web page on figuring-
ATM binoscope info
[ATM] Book Review.... sort of
ATM Building a clutch
[ATM] Carbon Fiber Tube?
ATM Cassegrain?
[ATM] Cell design
[ATM] Channeling Mr. Pitch
ATM CHAT...
ATM Coating Advice - Silvering or Bare Aluminum
[ATM] Coating Reliability
ATM Compliant cross hinge - is this correct?
[ATM] Computerized mirror making - new Yahoo group
[ATM] Conjugate foci for 6" ellipsoid again
[ATM] Cool Telescope Projects & Why Do We Build Telescopes?
[ATM] Cool Telescope Projects - My Briefcase Scope
[ATM] data and musings on thin mirror
[ATM] Detecting Astig in Ronchi images
ATM - Diamond Tooling
ATM: Disconnecting-
ATM: Drawings, Ritchey telescopes-
[ATM] Ends and odds.
ATM English Yoke Mounting
ATM: Everything repaired! I'm back in!
ATM Feedback on fine grinding
ATM FigureXP & Monte Carlo, Still Killing Time
ATM FigureXP part 2
ATM FigureXP Printing Beta
ATM FigureXP Version 2.0
ATM: Figuring articles
ATM: Figuring lessons-
ATM First Light Part II
[ATM] First Light Report: The Hobbitt Scope - 12.5" f/2.8
[ATM] five telescope project finshed
[ATM] Flexed mirrors.
ATM : FLIP MIRROR
[ATM] Focal Ratio for a Fast 24"
[ATM] Focal Ratio for a Fast 24" & Bob Cox
[ATM] Foucault/interferometry comparisons
ATM Foucault methods
New file uploaded to atm_free
ATM_FREE, Advertising on the GROUP
atm_free] Finding focal length - Brain cramp
atm_free] Finding focal length - Brain cramp
ATM_FREE, Gone too far?
ATM_FREE Moderator
ATM_FREE rules ... Please read them again!
[ATM_free] Tile Tool Article
ATM_FREE versus the ATM List?
[ATM] FW: David Harbour
[ATM] Fw: Distances required for star test are much too long.
[ATM] Fw: measuring ROC
ATM Fw: to parabolize or not......II
ATM Glory Days
ATM Go-To
[ATM] : gorrilla glue for tiles
atm_group group name/addresses have changed
[ATM] Help for Plop
atm help wanted not 100% contact
OAP (eccentric pupil) WAS ATM herschellian
[ATM] Hi resolution interferometry of mirror surface
[ATM] How to Re-Grind and Polish Secondary Mirrors
ATM How to/steel tape drive
ATM: How to use?-
ATM: Indexed figuring-
[ATM] interesting new diagonal mirror holder design in S&T?
[ATM] [interferometry] a 20" dall-kirkham
atm intro
ATM Large mounting available-
ATM: Large mounting for sale-
ATM Large optical bench-
[ATM] laser purchase
[ATM] Lerch's Robo Foucault VS. Interferometry, revisited
ATM Light colour vs effect on night vision
Yea the THE ATM LIST is back
ATM liturature
[ATM] Making 0,7 meter Cdk
[ATM] measuring an old, mystery, military f/2, 20" ca
[ATM] measuring an old, mystery, military f/2, 20" cassegrain
[ATM] metal mirror
[ATM] mirror cell
ATM: mirror cell platform
[ATM] mirror making - the biggest issue
[ATM] Mirror Round Robin and some in-house test results
ATM Mirror storage/transport, V
ATM Mirror storage/transport, II
ATM Mirror storage/transport, V
ATM Mirrors, storage, transport
[ATM] Mitutoyo readout
ATM Molded, ribbed mirror-
ATM More bragging rights
[ATM] mounting a very thin 20" mirror
ATM muzzle velocity
ATM: My atm hero, James Taylor-
ATM :My Cass'a'grin Project : Enough is enough
[ATM] Need a Chemistry guru! OT
ATM: New trick file
[ATM] [NOVAC] Help Needed - Smithsonian Family Day, April 16 - Light pollution display
[ATM] [NOVAC] Help Needed - Smithsonian Family Day + more details
ATM Observ. Bldng., wider view-
ATM Off topic: Chinese Super Machines
[ATM] Off topic - observed the Venus transit - ghost halo?
ATM: Old #5 tester-
ATM optical center
[ATM] Oregon Star Party Telescope Walkabout
[ATM] Paper tube?
[ATM] Paul Valelli
[ATM] pebbly finish
ATM: Pictures, Warren truss tube-
[ATM] PLOP designed cell and machining accuracy
ATM: Polar Axle, Bearings, No Machining
[ATM] Polishing /Figuring a Slumped Blank
[ATM] Polishing /Figuring a Slumped Blank
ATM Porting Figure45 to Win32, Looking for input on ideas.
ATM Portland Winburn hex tile tool-
[ATM] Powder Coating Project
ATM: Precision guide rails-
[ATM] pringles and telescope mirrors
atm progress
Fw: atm progress a few changes
atm progress cavitation
atm progress change of water paid off full contact
atm progress grit 220
atm progress one wet of 1000
atm progress still on grit 220
atm progress what 320 did
atm progress what next?
atm progress with 220, pits are decreasing in depth
ATM: Re., A mirror, a home brew, and thou
ATM: Re., lathe tailstock, for Dr. Schwartz
ATM: Re., re., Help
[ATM] Reflection Of Pyrex.
[ATM] Rich Field Telescope Views
ATM: Right Ascension Drive-
ATM Robo and Ronchi
Monte Carlo & FigureXP , was ATM Robo-Focualt, Killing Time crunching numbers..
ATM Robo-Foucault, Image intensity, and Changing knife edge readings
ATM Robo Misalignment Calculations, did I do this right?
ATM Robo Vs. The Intereferometer
ATM Robo1 VS Robo2
[ATM] Ronchi Movie of the ultra thin mirror and other ramblings.
[ATM] Ronchi profile technique
ATM RTV for Primary?
[ATM] Scoring and breaking 3/4" plate glass
ATM scrounging
ATM self contained vibration damper
[ATM] SHOCKING NEWLY DISCOVERED LUNAR MARKINGS
ATM Sled Focuser
ATM Slevogt variation
[ATM] Slicing 4" Thick Mirrors in Half
[ATM] Slit less wire test?
[ATM] Slumping Mirrors
ATM Spider Advice
ATM Star test
ATM Steel tape drive, II
[ATM] Strange abrasives (was fully correct outer zones in figuring
ATM: Stunning surprise-
[ATM] Substitute for ebony star
ATM: Successful bidder - NEW MEMBERS
ATM: Successful bidder - NEW MEMBERS
ATM surplus store on e-bay?
ATM Tape Drive, Don and Ken-
[ATM] Telescope Making Workshops
ATM templates-
ATM Templates, free to use, II
ATM: Thanks, Michael-
[ATM] The 16 inch Ultrathin ronchi pics - Dale's response
[ATM] The 16 inch Ultrathin ronchi pics - Dale's response
ATM: The Man in the Mirror
[ATM] The results of the glass casting run.
[ATM] The zonal Foucault test is free of inherent correction bias - some supporting graphs
[ATM] The zonal Foucault test is free of inherent correction bias - some supporting graphs
[ATM] threaded tube connectors
ATM Training Materials
ATM: Treatise on figuring-
ATM Truss analysis software - free
ATM Truss defelection analysis - gravity now included
ATM: Truss tubes
ATM Tube construction
[ATM] TUE not TDE
[ATM] Turned down edge- causes, prevention, cure
[ATM] Ultrathin lateral support at 30 deg.
[ATM] UltraThin tape as lateral support results
[ATM] unattended polishing video
ATM [VacuumX] 24" vacuum chamber is getting closer :)
ATM Web Ring
[ATM] What do you do with a massive old mirror?
[ATM] what does "F8z2699n opt 7702" mean?
[ATM] white house star party
ATM Working on a Parabol
[ATM] Working with Large Thin Mirrors
[ATM] Worms in interferometry data
[ATM] Yan: [interferometry] Making 0,7 meter Cdk [1 Attachment]
ATM Yet another Fringe analysis program
ATMer airport story
ATMing Sink
ATMing vs observing
Atmosphere last night
atmsite.org
Audio devices for use with SoundStepper
What is an "Auto-collimation Eyepiece"?
Auto-collimation data entry, was 15" Null test summary
Auto Collimation Setup
AUTO-COLUMATION
Auto ollimation
Acceptable Error in an Autocollimation Flat
Automated foucault software wanted !
automated startesting program RODDIER
Automotive Running Lights
Available plate glass
Avoid TDE
Avoiding cable wrap
Grinding and Polishing Machine (was: Awful quiet these days...)
Azimuth bearing - Teflon dimensioning
Baader MPCC Mark III Coma Corrector for Visual Use
Back to work
Backyard astronomy at its best
Possible reasons for bad performance of my telescope
bad smell inside OTA
Baffle Question
Baffling a telescope
Baffling, open truss telescopes, goto motor drive, and daytime observing
Sliding an OTA for balance on a dovetail plate???
Balancing a truss dob
Ball Peen hammers
Barlow/Focuser Travel Question
Barlow-Newtonian and relay-Newtonian
Barry's mirror ronchi comparison to interferometry.
Barry's Mirror steps
Bartlett digital kiln controller works as planned. . . . finally!
BASALTSLABS FOR MIRRORS
Base Size?
Basic information on interference testing please
Basic Mirror Grinding
Bath astigmatism removal whinning
Bath construction examples was [Re] Sphereometer [2 Attachments]
Bath innterferogram at last
A Bath interferometer used on a 40 inch F3.6 mirror [3 Attachm...
Bath Interferometer was New to group
Bath interferometry and fast mirrors.
Bath mounrted on the camera lens
Bath plus surplus shed 8mm dia 4mm focal length DCX
Be careful out there...it only takes a split second!
Bearing for eq mount
Beautiful crayford focuser
Beckman Coulter
Looking for a book "Understanding Foucault a Primer for Beginners"
Beginner asking stupid questions
Beginner (Part II)
Beginning with interferometry
Bench Star test
bending square aluminium tube
Benjamin Pikes Son's New York
best color
best mirror lateral support for equatorial telescope
best slit
better vision of bright jubiter or star
Beveling edge on grinding machine
Beveling the Edge
Biconvex Lens Blank Thickness for a Refractor
Big-Group of Chicks and Guys ...(etc.)
Big Ol' Grinding Machines
big telescope on the moon or maybe for us ATM
Binary stars and light speed
Bino-scope?
Bino Scope vs MMT Style Questions,,
Binocular Chair
binocular help
binocular whit mirror
Binoculars, wire spiders, EQ platforms and a better secondary mount.
ATM binoscope info
Binoscope tolerance
Binoscope vs Bino eyepiece in a single scope?
Bit more down to earth - aluminum oxide grit sizes?
BK7 vs Pyrex - what are the main differences?
Black and white
blank thickness
Blemished 18" on the block
Bob May
Book bargain
Book Review.... sort of
books
Books and their Prices (was A routine question about the limits of resolutio
Books and their Prices (was A routine question about the limitsof resolution.)
Books for first timers
Borofloat
Bowling ball disguised as a collimateable R/A finder.
Bragging Rights - (note changed subject)
Broken Site... Not quite but might as well have been.
Building a 10" truss Dob, would like some help
Building a curve generator
Building a fast astrograph
Building a filter slide
Building a rotating tube.
Building a rotating upper cage?
Building a telescope [2 Attachments]
Building an Equatorial Mount
Building an Off Axis Type of Scope
Building an ON-AXIS GUIDER for astrophotography
Building Foucault tester
Building Robo Tester - need some suggestions
Bulls-Eye Glass chart for annealing thick slabs
Burgundy Pitch
Buy or build ? your input please...
[ATM] Project Update - 24" F/3.37 BVC
BVC glass/ASM mirrors
By the way... (Please respond greg!!!)
By the way... (Please respond greg!!!)
byke sun DIAL
C9.25" Edge-HD OLSO approximations ?
Calculating wavefront of Newtonian system
Can a normal person make a refractor doublet?
Can errors in imaging caused by field rotation be corrected with software?
Can I flex a Thin Concave Mirror ?
Can you help me?
canon t1i and zhumell z12 dob
cant use plop
[capitalastronomers] Talks on amateur telescope making
car mirror
Carboard + epoxy tubes
Carbon Astrograph
[ATM] Carbon Fiber Tube?
Carbon Graphite Telescope Tube
carbon tube-carbon cloth-Resin
carbon tube-carbon cloth-Resin
carbon tube-carbon cloth-Resin
Carpet pad bump on ultra thin mirror.
Cassegrain's Secondary Mirror
Gregorian and Cassegrain Design
Cassegrain question
Cassegrain refigu was Slumping
Cassegrain Systems
Cassegrain Telescope parameters.
caustic formulas
Caustic test formulas questiion
Caustic Testing
Swartz's, cave test
Cave Test, or Fader's Quick Test :-)
ccd and schmicht canera
CCD Slit Test
Celestron C9.25 corrector plates
Celestron Comet Catcher
Celestron Mirrors
Celestron recycling
PLOP cell design tolerance
Cell mount
cell tolerance for sorbothane support
Cemented glass
Cementing lenses
center-less grinder
centerless grinder
central clear region
centrifugal
Centripetal vs. Centrifugal (or, is Centrifugal a real force?)
Cerium Oxide
Cerium bottle
Cerium Oxide
cg calculation equation help
Change of subject (WAS very kind CNC offer)
Changes to ATM_FREE
[ATM] Channeling Mr. Pitch
Channelling Device
chat room
chat room for a classroom
Cheap and Simple Red Dot Finder Mount
Cheap torsionally-stabilized four-vane secondary mirror spider
Checking In
Chinese Glass Catalog??
Pictures of chipped mirror uploaded
chordal strokes - initial hogging out
Clark knobs
Classic Cassegrain w-MPCC
Classical cassegrain design
Classical cassegrain designs pt. 2
Classical cassegrain designs pt. 2
Classical Cassegrain or Dall Kirkham ?????????
Classical Cassegrains, Rocky Mtn. View
Clean environment in grinding
cleaning help
Cleaning mirror before testing polish?
Cleaning Telescope Mirror with Steam
Clement Focuser
Closer ... Morning After
Closer to Paraboloid
Cloudy Nights Classified
Clutch for worm
coated mirror cleaning
Coated Mirror Package
Coaters
Coating Mirrors; Gold versus Aluminum
Coating Reliability
Mirror Coatings
coefficient of deformation
COG finding
Collimating a 10" Dob
collimation: 120deg or orthogonal
Collimation Definition
Collimation Oddity...off center when racked out
Collimation Tool for a Fast Newt
Collimators for 10" f/11
color filter as good as nebula filter?
Color is better when analyzing igrams in OpenFringe
Colour of CeO
Baader MPCC Mark III Coma Corrector for Visual Use
Coma corrector plate
Coma corrector suggestions
Coma was what a diff f/3 makes
commercial focusers
Comparing high resolution robo Foucault analysis to interferometry analysis
completed my mirror
Completely OFF topic
Completion of my first parabolic mirror
completly crazy edeal
completly off topic help
ATM Compliant cross hinge - is this correct?
Northrop Grumman, ATK complete composites structure for James Webb Telescope
Composite Mirrors
Compound gear-train calculation
Computer Control
Concave or convex....
Concept Review - Dob Mounted Roller Drive / Feedback
Confession time
Confused
Confusing test results
Conical and celluar mirror blank support for working the glass
Conical mirror deformation, best fit parabola
Conical Mirror shape
[ATM] Conjugate foci for 6" ellipsoid again
Consequences of primary not centered in box
Consistently Wrong?
Control Two Telescope By One Software!
Controlling dobsonian handmade telescope with a PC
[ATM] Cool Telescope Projects - My Briefcase Scope
Coordinate transformations
Corning Quitting Pyrex?
Coronagraph design
Corrected Cassegrain
Corrected Spherometer Spreadsheet posted
Correcting a slight edge problem
Correction Changes
Corrector Blank Thickness
Celestron C9.25 corrector plates
Corrector plate specifications [1 Attachment]
Couder... having looked at the SF tester
Optical comparators to find the null in Couder mask zones
Couder mask vs Pinstick
Couder Masks. . . . One Size fits all?
Couder schmooder
Couder schmooder, some ????
Coulter Overhaul 10"
Counter weights
Covering mirrors when not in use in outdoor scopes
Cracks in Zerodur
Crap!!!! a scratch!!!!!!!!!!!!!!!!!!!!
crayford focusser
crayford no-slip material
Crazy Blank
Crazy dave is back
Criticisms and disadvantages of Soundstepper
CrossHair - Utility to make easier pointing telescope using digital viewfinders
Cry For Mirror HELP
Culinary Delights - (note changed subject)
curious gif
Curve generating machine
Curve generating machine - clarifying note
Curve Generation
Curve Templates, Diagonals and Mirrors?
Curved spider
cut a secondary at 45
cutting a hole in a mirror or corrector
Cutting glass
Cutting holes in Aluminum
Cutting large diameter scope fixtures
Cutting plastic laminates-Thanks
Cutting plastic laminates-Thanks
Cylinder Mold for Composite tubes
CZ and changing COC advice and the F4
D Cassero: Dead or Alive?
Dall-Kirkham Vrs C9.25
dangerous question
Dangerous Solar Eyepieces?
[ATM] data and musings on thin mirror
David Anthony Harbour - Alive and well!
David Harbour's offers
De-rotation of images was dob drive
Death of ATM Free AGAIN?
Deep Doodoo or Not?
Deep-Sky Visibility Indicator 1.4 has been released
Deep-Sky Visibility Indicator 1.4 has been released
Dehumidifying a refractor; odd-ball material that looks like rouge
Dehumidifying a refractor; odd-ball material that looks like rouge
Delmarva Mirror Making Event in March 11,12 and 13, 2011
Delmarva Mirror Making weekend
dent near edge
Dental stone supliers and such
Dental Stone and Hydrostone Prices
Dental stone supliers and such
Question for Bob May about Dental Stone Tools.
Depressed zone
Derotation of images was dob drive
Derotation was dob drive
Design data of Schmidt corrector plate of commercial scopes?
Design of a CityScope
Designing a simple fork with desirable flexure characteristics
designing baffle systems (especially for cassegrains)
Detectin zones with Spherometer and Sharpie test
[ATM] Detecting Astig in Ronchi images
Detecting Extrasolar Planets...
[interferometry] determination of astigmatism
DIY Dew Heater (Nichrome)
Dew Heater Advice Please
DEW SHEILD COMPUTATIONQ
Telrad Dew Shield - Easy and Inexpensive
Diagnosing Flexure
Diagonal holders??
diagonal size and 100% illumination to edge?
Diagonal sizing
Diameter to Thickness Ratios
diamond cutting wheels
Diamond Generation
diamond pellets
Differant testers-differant results?
Difference between 12" and 12.5"
Difference between ETX-RA and ETX-EC
different but not new
Different Strokes . . . .
Extra Diffraction Spikes
Digest Number 1031
Digest Number 1165
Digest Number 149
Digest Number 211
Digest Number 2601
Digest Number 2654
Digest Number 2722
Digest Number 3131
Digest Number 334
Digest Number 3360
Digest Number 3537
Digest Number 3537
Digest Number 3814
Digest Number 3849
Digest Number 3864
Digest Number 390
Digest Number 558
Digest Number 558
Digest Number 588
Digest Number 689
Digest Number 785
Digest Number 788
Digest Number 809
Digest Number 823
Digest Number 846
Digest Number 865
Digest Number 873
Digest Number 874
Digest Number 955
dimention of nozzel of inkjet hp cartrige
Direct replies to eMails
Disaster Strikes!!
Discolored mirror
Distance to nearest artificial star and size?
[ATM] Fw: Distances required for star test are much too long.
distortion in my mirror
DIY Autoguider: Home-Built Autoguider Project
DIY Dew Heater (Nichrome)
DIY Drive controller
DIY Field Battery
DIY on-axis guider - conclusion
DIY on-axis guider - conclusion
DIY RACI Finder
Do group members need worm gears?
Do I need baffles on an 6" f-10 OTA ?
Do I need Carbon Fiber
Do you have issue Nov 1979 of S&T magazine?
Dob balance, was:Dob bearings
Dob balance, was:Dob bearings
Dob build question
De-rotation of images was dob drive
DOB Question
Dobsonian mount with dial drives and GoTo capability
Dobsonian Side Bearings - Aluminum or Baltic Birch?
Does an oblate center affect the image if in the secondary shadow?
does anyone have any experience with this seller/type blanks ?
Does anyone know how to reach Tony Gondola of Big Eye Optics?
Does the Coronado H-Alpha Scope show the granular texture of the Sun?
Donation Mirror Prymary Aluminized for Brazil 8" or 10". I have Hope
Done with science project, back to mirror [OT]
Doublet design
doublet lens correction
down and dirty ??
Yan: downloading Figure XP
Drafting/Design Software?
draper grinding machine question
Drilling hole in optical window
drip system
Drive system recommendations
Yan: Yan: [ATM] Dual conjugate test for prolate ellipsoid
Dual Scope Setup
dual speed focuser
DUMB move of the month -- need fix , HELP
dust free optics
e-scopes, Coulter Etc
Easy Mirror Testers
Easy Questions, not so easy Answers...
Easy rider
eBay alert - VARIAN 802-A THERMOCOUPLE VACUUM GAUGE METER + 0531
ebay auctions of Obsidian optics
[ATM] Substitute for ebony star
Edge not polishing. Was Richard "Ritchey" Schwartz
Edge not polishing. Was Richard "Ritchey" Schwartz
edges not polished
EdmundOptics Ronchi rulings
Effect of a negative lens on focal length..
effect of lap thickness
Effect of the shape of the aperture
El-el at zenith
electronic scope
electroplating
electroplating of mirror blanks
elliptical primary testing
Elutriation article
EM-6 In F-4 Ball & Socket
end of a wet
RE : Ent Beam Radius in Oslo light
Optical table epoxy question
epoxy mirror
eq or eq- fork
Eq platform or Mels GOTO
equatorial platform
Erector set truss tube
Esoterism in ATM :)
Eugenic humor
Eurglish
Excel app for optical calcs (WAS - Q's 8" f/5 - Clarifications)
excellent link
exotic mirrors
Fwd: Any experience with EzCBP Cylindrical Bearing Platform?
experimental 20" f\5 mirror
Extra Diffraction Spikes
Extreme Aperture Fever
eye problems
Eye Pupil: the case for mismatch
eyeball as eyepiece
Eyepiece advice
Eyepieces : 2" vs 1.25"
eypiece help needed
F/0.5 - what to use a F/1 mirror in....
F/0.5 - what to use a F/1 mirror in....
F/2 dobson
f/3.8 Parabolization Stalling
f/what?
F2.5 hyperbolic mirror for photograph.
F8 glass?
Face mask
Sv: Amici Roof Prism an abysmal failure
Fast finder problems
Fast Newtonian
Fastest hogging technique
Fear of testing properly
FeO+CeO=?
FFT and FigureXP
Fiber optic cable and artificial stars
Fictitious Forces
Field curvature
field of vew
ROC Offset Constantly Changing in Fig45XP
Figure 4.5 question
Figure 45 query
Figure 45 query
Figure and temperature variations
Figure XP instructions
Figure XP question
Sixtests and FigureXP
FigureXP & Monte Carlo, Still Killing Time
FigureXP Beta1
FigureXP Bug Fix :)
FigureXP Bug Report
ATM FigureXP part 2
FigureXP Part 3
ATM FigureXP part 4, Star Test Sim
FigureXP Printing Beta
FigureXP Printing Beta
FigureXP question
FigureXP Star Test, Simulation vs the Real thing :)
ATM FigureXP Version 2.0
figuring 155 mm f/8
Figuring a 20" F-5
Figuring a 70 cm CDK primary mirror.
Figuring a convex
Figuring, Accented Pressure
16 inch figuring documentation
Figuring help needed
Figuring matching curves
Figuring outer zones by machine
Figuring refractive optics
Figuring session 21
Figuring Theory
Figuring with an interferometer
File Capacity Almost Reached
Filter Quality: Astronomy filters versus photography filters
Filter thread
filter threads,
filter wheel
Filtered replies
Final Iteration of 2.5" F-4 finder scope
Final Test Images
Finally Figuring
Finder Scope Math
Finderscope Placement
finderscope Q
atm_free] Finding focal length - Brain cramp
finding glass
Finding out the conic constant
return to fine grinding
fine grinding with 500(or 20mc) 12 mc 5 mc
Fine grinding with pitch lap
fine threads
finished fast mirrors
Finishing Aluminum
Finite Element Analysis (FEA) - good online resource
First light
First Light: 18" f/4 Minimalist Dob (Long)
First light for my 8inch
First Light Part II
First Light Report: The Hobbitt Scope - 12.5" f/2.8
First Light, round two
first light testing of 450mm f/12.6 classical cass
First Light, well......it will have to do
First light(well sort of) with my 10" F-6 dob
First mirror!
first mirror making class session
First optical components coated in new 25" box coater :)
first project
first ronchi test, making sense of it all
First timer with questions.
fixed light source, verses moving.
Fixed web page for ronchi images of 16x3/8 mirror.
CZ
Hi
PS

Flat Enough?
FLAT OR NOT FLAT
Flat Testing
flatness is this metjhod is hood for optic work
Flex and thin Mirrors
Flex / Potato Chip / Astigmatism question
Flex Ratio
flexed 8" sphere
[ATM] Flexed mirrors.
FLEXING A MIRROR
Flexing a Convex Mirror ...
FLEXING A MIRROR
Flexing an under-corrected Konus mirror
Flexing an undercorrected Konus mirror
Flexing by vacuum or electromagnetically
Flexing Mirrors : Oblate spheroid
Flexing to Grind and Polish a Parabola
Flexing works! And there is a whole community doing it !
flip mirror plans
flip up mirror
flipping and rotating Zernike coefficients
flock paper lining
Flocking
foam block mirror cell
Effect of a negative lens on focal length..
Focal Length of Achromatic objective lens
Focal Length too short
Focal plane distance above focuser
Focal Reducer design
Focault and other testing methods
Focault auxiliary telescope
Focault test apparatus posted to Groups Home Page
Focault tester
Focault Testing Help
focaut test apperatus knife holder
focucer whit stepping motor
Helical focuser [1 Attachment]
Sv: Focuser baffling was Paper Lining
Focuser for Newtonians
Focuser Placement
Focuser question
Focuser Travel
Focuser upgrade
Focuser Vs Seconday Baffling
Source of 1 1/4" Helical Focusers
Focusers + Tube Clearance
Focusser Travel Etc
fog inside OTA
Folded neutonian
Folded Refractor Info Needed
Folding Telescopes
FORGET IT
Fork equatorial mounting
Fork mount construction
Formula for calculating time to reach thermal equilibrium.
FORTH and Fortran-90
foucalt tester
Foucalt testing with illuminated Couder mask - a good idea?
Foucault "First Light"
Foucault "Second Light"
Foucault and Couder mask
Foucault and interferometry comparison. Mirror two
Foucault and other images of the 10 inch 60 year old
Foucault Cameras
Foucault comparison of the 16 inch
Foucault contrast was 1/20 wave Auto collimation image
[ATM] Foucault/interferometry comparisons
ATM Foucault methods
Foucault or what
Foucault quiz part 1
How to Calculate Foucault Readings For Primary Mirror with Conic Constant Not -1
foucault shadows - a sincere apology
foucault shadows - a sincere apology
Foucault simulation of non-symmetric aberration errors
Foucault software suggestions
Foucault Test Analysis program question
Foucault test Experiment.
Building Foucault tester
Foucault Tester (is a pain)
Foucault to Phase Contrast transition
foucaux pendule at north pole
Foucualt
Foucualt Averages
Foucus Problems
Found!! The author is Bob Lombardi!
Freedom by degrees
fringe orientation
Fringe tracking
Front Aperature Calculations
FRUSTRATION ABOUT "This Group - (note changed subject!)" -- again!
FTP Downloads, was Interferometry ATM style :)
Full-slit Foucault or inverse wire test (long)
full thickness blank
funnybone101@comcast.net
Fused 12" f/6 conical mirror-Photos
Fused Optical Fiber
fused ribbed mirrors
Fwd: Glass
Fw: Advanced Spring Design LIVE DEMO
FW: AIAA LA November 30 Dinner Meeting
FW: [ATM] David Harbour
Fw: [ATM] measuring ROC
Fw: [ATM] Polar moment of inertia for a square tube?
Fw: atm progress a few changes
Fw: ATM Re :My Cassa'grin' Project
Fw: ATM SIG recap
Fw: [ATM] tiles glass ceramic; glued or embedded
FW: BBC E-mail: Drug 'reverses sleep lack effect'
FW: BBC E-mail: Earth almost put on impact alert
FW: Buy or build ? your input please...
Fw: [capital astronomers] New, much higher prices for mirror kit
Fw: [capitalastronomers] Ruminations on Redshift and the expansi
Fw: [capitalastronomers] Ruminations on Redshift and the expansion of the universe
Fw: Christopher Hitchens
Fw: Fwd: Mirror material
Fw: I need tube rings
FW: Latest analysis of my mirror
Fw: [M-O-M] Mirror-O-Matic for sale
Fw: [M-O-M] Texereau passes
Fw: NASA Tech Briefs Hot Products Preview
FW: [obsessionusers] Winter Star Party 2006
Fw: Prices at united lens
Fw: Royer change of address
FW: [rsifield] What an awesomely wonderful world!!!
Fw: Sixtests and P-V Error
Fw: Telescope mirror reflectivity meter
FW: The New Planet Machine
Fw: turned up edge [6 Attachments]
Fwd: Any experience with EzCBP Cylindrical Bearing Platform?
Fwd: [ATM] Slit less wire test?
Fwd: [ATM] TUE not TDE
Fwd: Can you say astigmatism?
Fwd: [comets-ml] Mt. Stromlo
Fwd: Delmarva MMM (was [ATM] tile tool)
[Fwd: flexing a mirror.]
Fwd: Free form talk
Fwd: Glass
Fwd: Interesting item on eBay web site item# 3800162265: Mirro...
Fwd: Interesting item on eBay web site item# 3800162265: Mirror Beam splitter mirror 5 beamsplitter s
Fwd: [New post] One Small Step For Magnification, One Giant Leap For Home Lens Manufacturing
Fwd: [New post] THP Entry: Making Amateur Astronomy Easy
[Fwd: Quartz mirror work]
Gaviola tester (is a possibility)
OT: Nuclear opin and Gee sum?
GEM mount
Generated curve-how to maintain?
TDE or just a follow to the tread "Getting Close"
Windowing functions was Getting Close - Diffraction Ring?
Getting Spherical (not)
Getting Started
gide rule please
GIKI tour Night of Feb 19th
Glass anneal as a limiting factor
glass blanks
Glass, etc. for Sale
Glass expansion images
Glass flotation cell problems
Glass foam backed mirrors
Glass on ebay
glass or film or ?? for ronchi grating
glass prices
Glass Thickness
Glueing on Ebony Star
gluing secundary mirrors
stripping and recoating gold-coated mirrors
gold versus AL deposition
Good Test Double Star
Google doodle honors Foucault
gorilla glue for tiles
gorrilla glue for tiles
got gifts
Got my Monocular
goto binocular
GOTO DIY?
graflon
Grating for Ronchi Test
gray scale histogram
Great momments in NASA
Greenlander Norse Resistance to Change
Gregorian Design
Re.,re., gregorian mirror-
Grey!
grey shade?
Grinding and Polishing Machine (was: Awful quiet these days...)
Grinding and Polishing Machine (was: Awful quiet these days...)
Grinding and subsurface damage...more info?
Grinding back of blank again-astigmatism removal
Waineo Elgin grinding machine-need help
Grinding Machine Operation
Grinding Mirror and Grit
grinding my mirror
Grinding/polishing machine speeds
making a tile tool for a 12.5 inch ,and rough grinding questions
Grinding Something Flat
Grinding with a pitch lap
Grinding with one size grit...........
grinding with tile tool
Grit and pitch
Grit Feeder
Grit Question
Grit Size Units
Group activity...
Group Chat...(multi group chat)
Group Chat...(multi group chat)
Group Photo
Gugolz 73, for flats... is hard?
Gugolz pitch
Guidance Required
Guide Tube Crayford Focuser for a Newtonian
Moving Mirror Focuser was Guide Tube Crayford Focuser for Newtonians
Gyroscopes and telescopes
H-Alpha Scope
Hams
happy new years
Happy Easter
Happy Holidays
happy new years
Non flat optical widows, was Hardcore ATM
Has any ATM ever made a Rumsey?
Has anybody used the Wire Test?
Has anyone ever used a dimmer control to drive a synchronous motor?
Has anyone herad form Tony Gondola?
Has anyone used a bearing like these to build a DOB base?
Hasting tube??
Having fun was "Personally, if I valued my time . . . . . . . "
Height of a rocker box bearings
Helical focuser [1 Attachment]
hello all
hello all
Hello. New Member. Wooden German Equatorial Mount
Need some help for a talk I am giving next month
Help for Plop -Z88-Aurora
Help for Plop -Z88-Aurora
help for search
help for some kind of diaphragm
help in optic
help me...scratches on mirror
Help needed in calculating the depth of a parabola beyond the originating sphere
Help on interpreting ronchi pictures.
Help! Swift glass: Pyrex Sheet glass is tempered.
Help! Swift glass: what to ask for...
Help Using Z88 Aurora for Mirror Cells?
atm help wanted not 100% contact
Help with a cassegrain mirror system
Help with a Large Aperture Planetary Scope
Help with focal lenght
Help with Plop for my 18" Dob project
here is a thought
hex tile
What do they call those machined rings that allow an OTA to rotate?
hey all, been awhile, but im back,
Hey, another question
hey .....new idea about secondary mirror
Hey plus more
Heyy + 2 Small question
Hi, Hello?
Hi! I am a newbie in this group :)
Hi, new member
[ATM] Hi resolution interferometry of mirror surface
Hi there
High Intermdeiate zone MOT, and targeted work on the higher segm
High Intermdeiate zone MOT, and targeted work on the higher segments
High Intermdeiate zone MOT, and targeted work on the higher segments of the zone.
High Zone
[ATM] Historic amateur telescope making event
Hobbit Scope at Starfest 2013
Hobby Foam
Hogging 16" pair-o-blanks
Holes
Holy Hacksaw!
Holy spider and stealth hacksaw blades.
home-built Mount questions
home made diagonal mirror
Home made focuser
Homemade Gregorian Cassegrain
Hope?
hot pitch on top off old lap?
Hot pressing Lap
House cleaning optical glass and stuff...
House rules...
How bad is it when NEWT says "75% vignetting at focuser" YES
How can I add a pupil in Oslo ?
How do I get the outer zone down? [1 Attachment]
How do I reduce coma
How do I test that my diagonal position and offset is correct
How does friction work?
How does one measure a mirror's surface quality?
How far do 2in eypieces go down the focusing tube?
How is the mirror coming?
How many floppy drives does it take to build a Helical Crayford?
How much bigger to make inner UTA than mirror?
How much does mirror quality really matter?
How Much Glass Can Be Removed During Polishing
How much hydro stone?
How Much Space?
How much total weight can a CG-5 GEM safely handle
how rough is too rough?
Active Cell Technology for ATM"s ??? Was ( How thin can a mirror be?)
How thin is too thin for practical use?
How thin is too thin for practical use? And when is slumping required?
How to add the new comet in Stellarium ..... not related to ATM
How to build a Truss Dob in your garage/workshop CONT.....
How to build a Truss Dob in your garage/workshop CONT.....
How to Calculate Foucault Readings For Primary Mirror with Conic Constant Not -1
Yan: How to carry heavy mirror to test stand
How to choose an eye piece to get a specific field of view
How to compensate for a change in scopes location
How to cut this 1" thick plate glass
How to diss assemble an old 1960s Edmund GEM
how to find the correct allignment of a doublet lens [1 Attachment]
How to find the optical origin of a parabolic mirror
How to fixture a meniscus mirror blank for polishing and figuring?
How to get rid of star
How to identify tempered glass with certainty
how To making long Focal lenses
how To making long Focal lenses
How to minimize draw tube obstruction when focuser retracted
How to mount dew heaters in large format, lightweight secondary mirrors
How to Polar Align a fork mount that lacks a hollow polar shaft?
How to position an Amici prism
How to protect lens surface?
[ATM] How to Re-Grind and Polish Secondary Mirrors
HOW TO SILVER THE MIRROR
How to tell if a blank is quarts?
How to test corrector lenses element
How to the big guys prevent bubbles in their glass?
How to tune orthogonality
How to turn PLOP results into a template ?
howt (sic!) verify the focal of a lens
howto mesure micron at microscope help
Hp inkjet based artificial star
hrlp fot pin hoke cam
HTML gibberish in mails
Another Foucault of Hubble Optics showing the astig.
Hubble Optics Sandwich Mirrors
Hubble Optics Sandwich Mirrors-Ronchi tester
Hubble was OpenFringe Strehl calcualation was RTAFT program
Hubbleoptics mirrors on eBay
Huge Lens please STOP sending me emails
Huge Lens please STOP sending me emails
huge mirror suppliers
HydroStone Tool Calculator
I added some OSLO lens files
I am using the chordal stroke ,when should i switch to the "W" stroke
I'll try most anything once. . . . even powder coating wood!
I can press my finger print in to my pitch lap.
I cant find tiles for my tile tool
I don't know what is going on here...
I finished my mirror
I forgot to mention, that I am looking for advice!
I found this to be very interesting....
I have a 4" circle with no contact?
I have a Spherometer and i have no clue how to use it.
I have some questions about these ronchi pictures
I Love and Hate ATM :-)
I need a source of crushed, granular or powdered borosilicate (Pyrex) glass
I need capture software...
I need tube rings
I over thinned my pitch, now what.
I posted new OSLO how to guides
I think I have finished!
I would like to measure a Tasco mirror
ICE mirror
Ideas for a 4" Bino Telescope
Identifying Glass Types for a Doublet
IE6 and OE and laptops and being way off topic
Igram analysis round robbin
Igram round robbin results compilation
igram round robbin Fringe trace
Illuiminated Setting Circles
Illumination problem [2 Attachments]
Imaging Test
Import a 25" blank
Delete Important!
Improved Foucault simulation of TDE
inclinometer
increasing sensitivity of KE tester
Index of refraction
Indian Ocean portholes?
Info on fast lens
Information about vacuum chamber
installation of interferometer tester
interesting aritfact while testing
[ATM] interesting new diagonal mirror holder design in S&T?
Interesting Site
Interferogram analysis
interferogram contrast
Interferometer for sale
Interferometer information
Interferometers in DC
Interferometric study of lateral support of Ultrathin mirror.
Interferometric testing
Interferometric Testing 12.25" f4
Interferometry while still in grinding stage
[interferometry] 24" mirror finished !
Interferometry and Flats
Interferometry and Foucault testing experiment
Interferometry and mirror edge artifacts
Interferometry ATM style :)
[interferometry] averaging the igrams
Interferometry for Amatuer Telescope Making
[interferometry] Igram
[interferometry] Improved igrams for 1-meter mirror, progress on the surface
[interferometry] Laser disassembly
[interferometry] lasing or not lasing this is the question
[interferometry] My igrams in color
Interferometry noise and OpenFringe
[interferometry] Posting
Interferometry Questions - [ATM] Unable to fully correct outer zones in figuring
[interferometry] Request for Information
Interferometry testing telescope mirrors
Interferometry while still in grinding stage
[interferometry] Windows 7 and OpenFringe
Interpreting results with a FIZEAU INTERFEROMETER
Introduction
Introduction
Invitation to join OMIcoatings Yahoo Group
Irfan and Umair arrived.
Is a 4.5" F/5 mirror too samll to be made on machine?
Is crossing the Canadian border with optics cause for concern?
Is it correct? of axis
Is it correct? off axis
Is it done?
Is my refractor trash or still a good scope?
Is The ATM List dead.
JAF Great illustrations!
James Lerch's "Robo" and interferometry compared
James Lerch... Package?
Machine Figure An 18"-James Mulherin Please View
James Mulherin Machine Photo
jan your 8" f4
Jimbo...
John A's tile tool
John's KE tester
John's photos
John Dobson in the UK
John dobson telescope making video?
Joy of mirror making (Mel Bartels)
June 26th star gathering
Just posted design for 12 inch f9 CDK using standard components
Ken Hunter's Spherometer Spreadsheet.
Ken Hunter Grinding Machine
Kenny [1 Attachment]
kid update
kid's atm 2 focii
kid's atm 2 focii
kid's atm problems
Kitchen film vs Release Agent
Korneev astrograph
Kydex sources?
L-H design data share with you.
L/H Glass price followup
L-H telescope under construction
LA Times; John Dobson
Lap foundations
lap offsets and rotation
lap plaster(POP) base making. failed
lap plaster(POP) base waterproofing
lap questions
Lap Size.
Lapidary Journal - anyone have a copy of it?
polishing with sub diameter laps
Large binoculars
Large high speed lens
Large Mirror Grinding
large mirrors by hand
large optical blank
Large plate glass blank?
Large Secondary
large secondary holder
large thin mirror astigmatism
large thin scratched mirror
Laser collimater
Laser collimator
Laser Diodes
laser pointer for scope finder and the LAW
laser pointer for scope finder and the LAW
laser polish test
laser purchase
laser test polish
[interferometry] lasing or not lasing this is the question
Lasing voltage was Mirror test set ups
Lateral support and EQ mounting
Lateral Support idea, Group Main Page photo...
Lateral support in mirror center
Lateral support position experiment
latest glass fusing
Latest photo - focuser
latest test
latitude and longditude
Leadscrew Driven Crayford Hybrid
Learning Patience
Learning to use OpenFringe [1 Attachment]
LED's as a Monochromatic Light Source? [1 Attachment]
LED Current - Curve Fit
LED Current - Mini Mag Lite Conversion Kit
LED Musings
how to find the correct allignment of a doublet lens [1 Attachment]
Lens Crafting
lent calculator
Let it Roll
Leveling a Dob
Light materials for telescope tube?
Light source for foucault tester
Light Source Knife Edge Distance
Light weight pyrex mirror blank at resonable price ?
Lightening an 8" dobsonian
Lightening and 8" dobsonian
Lightweight cell and OTA?
Lightweight Finder?
lightweight scope material
links for testers
links for testers
Links section missing
List messages receipt
Load capasity and stability of EQ mounts
Location of Dale's Fringe Software
Log Book
lomo 133mm vs orion star mak127mm vs pronto vs etx125mmvsnextsar 4
Long focus reflector
Long focus reflector - was: Metal Tubes
Long post about Richard, Ronchi and the Foucault test
long scope
looking for a 4 /14 F/4 mirror ?
Looking for a book "Understanding Foucault a Primer for Beginners"
looking for a clue
Looking for a Mirror Manufacturer Recommendation
Looking for a used kiln that can maintain temps of 2000 degrees F
Looking for Albert Highe
Looking for an affordable source of secondary mirrors with 1/2" M.A.
looking for an answer that makes sense
Looking for an OSLO or Zemax model of the C14 Edge-HD
Looking for apo designs
Looking for David Harbour
looking for details on anodization of Aluminum
Looking for extruded "H" channel foam rubber, preferably low dur
Looking for extruded "H" channel foam rubber, preferably low durometer.
Looking for good deals on tubes for 6" F9.16
looking for help
Looking for help with CH-250 camera
looking for lens "presciption"
looking for lens "prescription"
Looking for mirror quality info on GSO mirrors
Looking for parts
LOOKING FOR SOME ADVICE
Looking for somone who can make/machine something for me
Looking for suggestions for worm gear
Looking to contact Berthold Hamburger
Loss of another ATMer
Low budget Autocollimator
Low Mass / High Stiffness Materials
Lowest possible profile focuser
Lunar Eclipse Video
Lunar MWIR image [1 Attachment]
Lunar South Pole
LUPI - interferometers
Lurie-Houghton Failure
Lurie-Houghton Newtonian Telescopes
lwt & Sixtests
[M-O-M] Moments of Torque, frustration, and insanity :)
[M-O-M] new blank
[M-O-M] Pellets
[M-O-M] Texereau passes
M94: First light testing of new baffle configuration of 18" Cassegrain
Mach's mirror metal magnalium
Machine Figure An 18"-Result of 2nd Figuring Session
Machine Figure An 18"-18 point cell parts
Machine Figure An 18"-9th session yields .94-.97 Strehl
Machine Figure An 18"-Acculap 33% tool chipping
Machine Figure An 18"-Cell Design
Machine Figure An 18"-doofus recalibration
Machine Figure An 18"-James Mulherin Please View
Machine Figure An 18"- Knife Tester and Stage
Machine Figure An 18"- Maskless and Couder Testing Comparison
Machine Figure An 18"-Maskless Test .95 Strehl
Machine Figure An 18"- Maskless Testing Comparison 2
Machine Figure An 18"- Maskless Testing Comparison 2
Machine Figure An 18"-Matching Ronchi
Machine Figure An 18"-Mirror Complete-Final Assessment
Machine Figure An 18"-Mirror Complete-Thank You
Machine Figure An 18"- New Imaging Tester Remade
Machine Figure An 18"-New Imaging Tester Setup
Machine Figure An 18"- New Upload of Maskless Images
Machine Figure An 18"-Result of 2nd Figuring Session
Machine Figure An 18"-Result of 3rd Figuring Session
Machine Figure An 18"-Result of 4th Figuring Session
Machine Figure An 18"-Result of 5th Figuring Session
Machine Figure An 18"-Result of 6th Figuring Session
Machine Figure An 18"-Result of 7th Figuring Session
Machine Figure An 18"-Result of 8th Figuring Session
Machine Figure An 18"-safer machine weights
Machine Figure An 18"- Test Discrepancy
Machine Figure an 18-inch
Machine figuring - dog biscuits
Machine figuring a 16"
Machine figuring a 16"(testing with flats)
Machine figuring - Beyond Infinity
Machine figuring - dog biscuits
Machine Figuring Outer Zones
Machine Grind An 18"- Acculap Figuring Lap
Machine Grind An 18"-1st Ronchi
Machine Grind An 18"- 1st Surface Error Graph
Machine Grind An 18"- Acculap Figuring Lap
Machine Grind An 18"-Fix The Edge
Machine Grind An 18"- pitch tester
Machine Grind An 18"-polish a sphere
Machine grinding an 18"
Machine grinding an 18" Mirror
Machine grinding an 18" Mirror (even a FLAT one)
machine parabolizing pyrex
ATM Machine pitch lap designs?
Machine polishing a sphere
Machine polishing a sphere-Ronchi image of problem
made a pinstick
Made pitchlap and started polishing
Made Prism
Madhukar's igrams
Magic Sliders
magnifaction
Testing e-mail - Please ignore
ATM Main mirror cell design - need help with bearings
Make a thin lap thicker
makeshift tube rings
Yan: Making 0,7 meter Cdk
Making a cell?
Making a cheap mount for a small refractor?
Making a finder scope
making a first mirror
making a flat
Making a focuser
Making a list checking it twice ;-)
Making a secondary mirror
making a tile tool for a 12.5 inch ,and rough grinding questions
Making a tile tool for a 12.5 inch blank
Making An Aluminizing Chamber
Making an artificial star tester
Making contact problem...
making curve secondary
Making EP's identifiable in the dark.
Making eyepieces?
Making flats
Making large laps
Making Laser collimator
making ones own mirror
making own mirror. Thanks
making plaster of parris disc for polishing
Making Schmidt Correctors?
Maksutov corrector
Maksutov corrector, hints and offer for sale
Maksutov corrector - How to identify?
Maksutov corrector minimum thickness
Maksutov Correctors
Manual or Help on TraceXP
Marble stone as a Primary mirror?
marine epoxy
Mark's Moon pic.
Mark I Classical Cassegrain
Mary had a little lamb
Masked Unmaksed Robo data and slit width
Masking Expirement
Maskless Images-larger originals
MASP
Material for "wire" spider?
Material for secondary cage
MC3 Goto Controller???
Meade178ED refractor
Meade and Tasco
Meade DSX-125AT
Meade Instruments
Meade: Somebody is unhappy with their management
Meade178ED refractor
[ATM] measuring an old, mystery, military f/2, 20" cassegrain
measuring assembled newtonian focal length
Measuring Autocollimation Null figure with FigureXP ( was 15" Null test summary)
Measuring glass refractive indexes
measuring ROC
Mechanical stripping
Mechanical stripping of old mirror coating.
Member trends vs Posting trends
Members photo's
Membership change
atm_free deletes the text of my messages.
[ATM] metal mirror
Metal Mirrors.... AGAIN
Metal tools
METAL TUBE FOR 17-1/2" F/4.5 NEWTONIAN SUGGESTIONS
Long focus reflector - was: Metal Tubes
metal turning
Michell's foucault tester
Micro tap Guide
Microfiber Cloths
Microscope making anyone?
microscope webcam a bit off topic
Microsoft word was ronchi images
Microswitches
mid-air projection
Mighty Mouse
Milligan interferometry report
Mindless Fun
Mini Dob at Okie Tex
minismus computaion
Mirror and pitch containers
Mirror blank, off-axis mirors
Mirror blank specifications
secondary mirror blanks supplier
Mirror Blanks, Etc.
What Point Mirror Cell?
mirror cell advice
mirror cell design for cellular blanks
mirror cell for 20"
Mirror Cell for a Trackball scope
Mirror cell idea: bearings for mirror side supports?
Mirror cell ideas - beams and wide RTV pads
Mirror cell progress ... need some help
Mirror cells - some professional literature and ideas for amateurs
mirror class progress
Mirror coater recommendations
mirror coating
mirror coating fix
Mirror Coating Issue.
Mirror Coatings
Mirror Edge Support?
Mirror Flexing by itself ?
Mirror Flexing, revisited. . . . . . . again!
Mirror Flexing, revisited. . . . . . . again!
Mirror forces and ramblings about modeling was [ATM] Help for Plop
What type of motor did you use when you made your mirror grinding be
Mirror Grinding Meaning
Mirror grinding stand surface?
Mirror Haze
mirror hyperbolic astrographic
mirror making class beginning in Eugene Oregon
[ATM] mirror making - the biggest issue
mirror making thieves, was 11 inch tool and 6 inch mirror
Mirror Placement Tollerances
Mirror Projects
Mirror pulling?
stabilite mirror question
Slight tangent on the Mirror Silvering thread
Mirror Sources
mirror stand
mirror surface mirror20scope4
Mirror test set ups
Mirror test set ups- - OpFr
Mirror test set ups- retraction
Mirror testing parts
Mirror testing parts
mirror thickness for a 24 inch
Re., ATM: Mirror tools
Mirror Vendors
[ATM] How to Re-Grind and Polish Secondary Mirrors
Mirrors,DIY
Mirrors on Palomar and Wilson
Missaligned optics in a reducer/corrector
Mitch's mirror
Mitch talquence last message
Mitchell's test pics ??
Mitchell's album
Mitchell's test pics ??
Sv: Mitutoyo readout
Mixing figuring strokes
model report
Moderation
Moderator help
Modification of a Newt for photography
MOIRE- membrane etched Fresnel scope
MOM figuring
MOM polishing
Monte Carlo & FigureXP , was ATM Robo-Focualt, Killing Time crunching numbers..
Moonless night between Dec 4 and 5 at 3000 feet an observation report
More Basalt
ATM More bragging rights
More details posted of my scope(question)
More details posted of my scope(question)
More Foucault questions
More help needed with Astigmatism
More info on the Lyot Test process
More new pics
More on astigmatism
More on OSLO Optimizing
More phase contrast and Foucault images
MORE Robo Data and a HUGE THANK YOU!
More tester questions
motorizing 12" Dobsonian finished
Moulding a pitch lap
Started on a 17" CDK and equatorial mounting for it
Mount info
[ATM] mounting a very thin 20" mirror
Mounting mirrors upside down
Mounting piers in solid bedrock
Mounting Secondary Mirror
Mounting Tips for positioning sighting devices
Mounting to Flotation Cell
Moving Cage Focuser
Moving Mirror Focuser and Flexural Bearings
Moving Mirror Focuser was Guide Tube Crayford Focuser for Newtonians
Moving primary
Moving solutions
Baader MPCC Mark III Coma Corrector for Visual Use
Multiple RCA plug connections
music to grind by
Musing on ultra thin mirrors.
My 3d surface display program
My 6" f/8 Dob
My 8" Mirror Project
My 8-inch travelscope
My 8 Mirror Project
My ATM pages are back up
My Cass'a'grin Project : Latest Ronchigrams
My Cass'a'grin Project : Mirror DONE
My current Phase Contrast Setup.
My favourite optics book seems to be back in print
My First Mirror is DONE!!!
my grinding machine
MY OTa 2 Piece Poles - and how trusses really work
my ota Hogging out Mirrors mechanically
My pitch is now the right consistancy.. But..
My Second Foucault Tester is Done!
Possible reasons for bad performance of my telescope
My truss tube dob appears to be slipping
MyNewton oftware Digest Number 2412
mystery
Name signatures
Napier
nasa apod of april 29 2 errors
NASA True Value washers
Nasty Happenings at Meade?
Need 10" Pyrex blanks
[ATM] Need a Chemistry guru! OT
need advice on mirror cell
Need advice on 8" mirror project
need advice on mirror cell
need help reading ronchi images
Need Help (suggestions) for a Drive Problem???
Notes on unsing interferometry was Need help with figuring
Need some help for a talk I am giving next month
Need some plans for a travel scope
Needed - flint blanks
Netiquette!
New book...any good?
New Cassegrain Design
New Cassegraine Design
New file uploaded to atm_free
New file uploaded to atm_free - Mirror Test
New Foucault Tester
New Group owners.
New Group photo's
new guy
New here, question about A. Thompson's scope design..
New member
New member and an off topic question
New Member - atm_free advertizing??
New member - building a refractor
New Member here
New member/intro
new member.. old question..Foucault/Ronchi testing
New Member on the Block, Are you all ready?
New member question
New members
New Mexico, Arizona, Colorado road trip ideas
New Mid Wavelength Infrared Moon Image
NEW MIRROR
new motorizing project
New photo, wrong folder, can't change
New Pictures
New Poll
New poll for atm_free
new project
new project ,,need advice/help
new scope online
New Scope Project #02
New Scope Project #01
New Scope Project #02
New source of surplus military optics in Europe.....
New telescope finished! 360mm equatorial!
New test data
Bath Interferometer was New to group
New to telescope and mirror making
New to telescope design...
New to the group & new ATM start-up
New Tool
New version of OpenFringe
New web pages
A new yahoo group that should be of interest
happy new years
Newbe questions
Newbie and Refractor Mounting
Newbie Here
A newbie question on tube diameter
Newbie with questions...of course.
newbies.
Newest member is also #1000 on ATM_FREE
Newkon MGT 2.5x17.5mm Monocular
Newly discovered resource for custom machined parts for ATM's
Newport Glass
sad news
NEWT program
Newt Secondary
Newtonian Focus problem
Newtonian Mirrors Available
next what
Nine point Cell, point positions?
No Metal on the Mirror!
No more angry spiders...
No Need for Edge Support or Mirror Clips
no subject
Non flat optical widows, was Hardcore ATM
Non Newtonian Fluid
North Star Position
Notes on Dyeing Nylon Screws Black
Notes on unsing interferometry was Need help with figuring
[NOVAC] [MathTalk] transit of Venus -- corrected math
Novice foucault tester using a low power magnifying scope question please..
nuclear followup
Null corrector for a fast mirror
Null distance
Ronchi Null test for Paraboloids
Nulling/autocollimation interferometry
Numerical and Optical Nulls [was: measuring ROC]
OAP (eccentric pupil) WAS ATM herschellian
Oblate Spheroid
observation of moon whit iris like 35mm cam
observation report last night at lahore grammar school dha phase 5
Observing solar eclipse:uncoated optics
Octagon Mirror
Octogonal Mirror
Octogonal Mirror + a note
Of interest to ATM's
of realistic epectations
OOF topic a bit
Off axis Mirror
Off Axis Mirrors
Off-Axis Newtonian
off axis scope
Off-The-Shelf spherical pivot for collimating primary and second
Off-The-Shelf spherical pivot for collimating primary and secondary mirrors
Off to the races
Off topic: Hacking
Off Topic, but...
off topic - meade etx-90
Re, ATM "Off topic Nigeria scam"
Off topic - observed the Venus transit - ghost halo?
Off topic: Stefanik Observatory in Prague, Czech Republic
Off Topic: why colors are not visible without CCD systems
Offset
OfFTopIC mouse problem
OfFTopIC  mouse problem
Ohh dear GOD, my shmidt-newt
OIII filter
OK ,it's not a lump it's a pimple.
Okie Tex 2008
Old Coulter Mirror
Old Edmunds Scientific
Old Scope Aquired UPDATE
OMI 30 inch Dob
OMI's Dean Carlton passes
OMI Blems posted to eBay
OMI Evo 30 at TSP
OMI-Pyrex-Ready to Polish
On-line telescope-making diary
On the Bath interferometer
On topic posts...
One Arm Mount
One idea on what to do after you build that telescope/CCD - amateur science
One source of telescope design ideas - especially the drive
One way to make a spider for a Newtonian
One Year Later
OOF topic a bit
OpenFrgine Strehl calcualation was RTAFT program
OpenFringe Batch Processsing pre conditions.
Hubble was OpenFringe Strehl calcualation was RTAFT program
Opinions needed
Opinions Requested - RC Optics
1/20 Wave Autocollimation image was Opinions Solicited-18 " Cass null images
Opinions Solicited-18 " Cass limits of return
1/20 Wave Autocollimation image was Opinions Solicited-18 " Cass null images
opportunity for a student workshop
Optical center?
Optical comparators to find the null in Couder mask zones
Optical Design Software options
Optical Lathe
Optical Strain Measurement for Full-Field 3D Analysis & Model Validation
Optical Tube Assemblies
OPTICIANS WARDROBE
Optimization
Optimized Jack Wolfe design
or no moving mount at all...
Oregon Star Party Telescope Walkabout
Orion Telescopes mirrors
OSLO Analysis For 16 Inch Folded Newtonian
OSLO and other optical sotware design
OSLO Beginners
OSLO EDU Ghost Analysis?
Oslo edu problems
Oslo LT 5.4
Oslo LT scaling
OSLO Optimization Part 1
OT: Advice on Etching Brass
OT - binoscope
OT: for those who don't know...
OT: languages
OT: Nuclear opin and Gee sum?
OT: Nuclear opin and Gee sum?
OTA Balancing
ota sections length and dew shield sizes for a big refractor
other list?
Other sources of astig in the Bath
Our first telescope
our group meeting
outdoor installation (A true story)
outdoor installation (A true story)
Outer 1/2 Inch Taking forever to Polish
Overarm length for grinding machine
Overarm motion for grinding machine
Overarm Side loads
Overcorrected mirror
P.S.!!! Read this!
James Lerch... Package?
PACKAGING MIRRORS TO SURVIVE SHIPPING!
pad polishing only?
Pahse Contrast test
Oblate? [WAS Painful screeching!]
Sv: Focuser baffling was Paper Lining
Paper Towel Reflectometry? :)
Paper tube?
radio parabola building
Parabola (was sagitta)
Parabolic Reflectors
machine parabolizing pyrex
Parking Brake Trick
Parks Optical EP
Part 1 of astronomy trip to Changa Manga Forest Resort on my Honda 70 motorcycle
Passing of John Dobson
Paul Valelli
Paul Vallelli’s memoirs (was Need s ome hel.p for a talk I am giving next month)
Paul Vallelli’s memoirs (was Need some hel.p for a talk I am giving next month)
PDFs rather than word files?
PDI
pebbly finish
pelletier effect
[M-O-M] Pellets
Pencil Testing Glass
Perfect lap gone bad
perforating primary
perforating primary with a water jet, Lamentations
perforating primary with a water jet, Lamentations
PFA versus Teflon - who has duplicated the study?
Phase contrast and Foucault puzzle
phenomenal mirror [1 Attachment]
New Spherometer Spreadsheet and photo's
Photo Size-question for Ken Hunter
photograph ronchi
FW: Night Photography, Future of DSLRs, Mic Shootout and More
photomail test
photos of mirror test
Photos Posted
Pic of Curt and 12.5" f/5
Pictures of chipped mirror uploaded
Pictures up
Pier Adapter [3 Attachments]
Pig Headedness (WAS Ronchi Test)
Pinched Optics vs Astigmatism
Pinstick schminstick
Pinstick testing and couder
pirex or not pirex
Pitch Increase in Cost-new source?
Pitch is?
stuck pitch lap is free
Pitch Lap for 10" - cold press question
pitch lap gaff
Pitch Lap Maintenance
Pitch laps and procedures...
plain text in eudora
Plan change - 32" blank arrived !!!
Plan change - 32" blank arrived !!!
Plane for newtonian
Plane mirrors
Planetary Newt Question
Planetary Newt Thanks You
planning a 24 inch
Plano=5fconvex=20attempt
Plano_convex attempt
calculating spherical aberration of a plano convex lens
Plano-convex lens diameter
Plano Covex lens
plaster temp
Plaster types
Plastic/Rubber Tray/Tub/Trough?
Available plate glass
plate glass source?
Please advice - 8"f7.2 figuring process
Please take the time to take this important survey
PLEASE TRIM YOU REPLIES
Help for Plop -Z88-Aurora
Plop & Cellular Mirrors?
PLOP cell design tolerance
PLOP Colour Plot
PLOP designed cell and machining accuracy
PLOP question
Plunge in Meade Stock
PLYWOOD FOR A 17.5" F4.5 SQUARE OTA DIMENSIONS???
Plywood Tools
Point source diffraction and open structure mirror
Subject: a step in the right direction, was, points pads and scientist
Polar Cassegrain video
Fw: [ATM] Polar moment of inertia for a square tube?
Polar Moment of Inertia for Square Tube
Polar Scope
[ATM] How to Re-Grind and Polish Secondary Mirrors
Polish Out Astigmatism
Polish quality
Polishing Problems
polishing a 5 inch f 10 mirror
Polishing a lightweigth 26 ins. mirror
Polishing a mirror on a machine
polishing a thin blank with pads
Polishing and grinding machine spindle speeds
polishing compound
Polishing compounds
[ATM] Polishing /Figuring a Slumped Blank
RMS=7.1 polishing improved ...20 mirror-scope..... 4
Polishing old lenses
Polishing Problems
Polishing questions
Polishing questions
polishing (Salem still does ATM)
Polishing Simulator
20" polishing with pads
polishing with polyurethaan??
polishing with sub diameter laps
polling for opinions: diagonal sources
Poor image in a Cassegrain
poor mans caustic test
Poorman's Drip System
ATM Porting Figure45 to Win32, Looking for input on ideas.
Portland tools (WAS: ATM Dental Plaster?)
Position of focuser in relationship to 4-vane secondary spider
possible cell for a thin mirror - input required.
Possible Quartz Mirror Substrate?
Possible reasons for bad performance of my telescope
possibly stupid question: about Dew on primary
Post and plate blanks
Post and plates blanks was Ribbed Mirror Blanks
[ATM] Advertisement: Quartz blanks for sale. (cross posting)
Posting Replies
Postings on two lists
Poured the tool.
Pouring Large Laps
I'll try most anything once. . . . even powder coating wood!
Powder Coating and Anodizing
Powder Coating Project
Pravin Jat's 8" mirror Ronchi Test.
Pre-First Light!!!!!!!!!!
Precision Mechanics D. Kittell
Preparing a scope for the June Transit of Venus.
Preparing a scope for the June Transit of Venus.ERROR CORRECTION !
preparing pitch
Preparing to grind.
Preventing damage when Transporting Mirrors
Primary Baffling Experiments
Primary glass bonding
Primary regluing...
Primitive man
Print through?
Prism in place of eliptical mirror in Newt.
Polishing Problems
Problem reaching focus with Pronto and Coronado 40mm solar filte
Problem reaching focus with Pronto and Coronado 40mm solar filter
Problems, problems, problems
problems with Discovery Optics ...
Procedure for a Meniscus mirror
Procedures in Experimental Physics
Profile overlays for Foucault and Interfeometric tests of 2 mirrors
update for 20" mirror progress
Project almost done
Projection Lenses for ATM?
Pros and Cons of piano wire secondary spiders
Pros and Cons of Protective coatings on mirrors
Protected Silver Coatings
Protecting a polished surface
protostar telescopes
Pulling a mirror into a parabola
Pulling a mirror into a parabola
Pushing ahead
pyrex blank pictures 10" x 1.75" two pcs
Pyrex Blank Sources in US?
Pyrex Blanks
Pyrex or borosilicate Cullet needed
Pyrex Reflectivity?
Q's 8" f/5 - Clarifications
Q's 8" f/5 - Clarifications
Q's 8" f/5 (WAS Under the radar? "Party crasher"?)
[ATM] Advertisement: Quartz blanks for sale. (cross posting)
Quartz mirror work]
Quartz or zerodur flat elliptic secondary ?
Quartz supplier
telescope pier question
Question about finishing Medium Density Fiberboard for optical bench base
Question about group
question about homemade refraactors
Question for Bob May about Dental Stone Tools.
Question for Brian Crabb
Question For James Lerch
Question For James Mulherin
A question for Ken Hunter!!
Question for the glass guru's... (Challenge for the day)
Question for the group
Question of making refractor
Question on (apparent) MAK corrector blanks
Question on detecting zones in fine grinding
question on fused plate glass blank
Question on parabolizing strokes
Question on pole seats for UTA
Question on T.U.E.
Question on use of tempered plate
Quick UV Cure Polyester Resin
radio parabola building
Radius backed mirror support
Rails on an Optical Bench
Ratio: pounds per square inch for Teflon & Black Ebony laminate
Rayleigh Water Test (Was: [ATM] 30" Flats)
Rayleigh Water Test (Was: [ATM] 30" Flats)
re 16" mirror. Thanks for all the advice
Re., ATM: Mirror tools
re-cementing lenses
RE : Ent Beam Radius in Oslo light
Re-greasing Vixen Polaris
Re ;Mirror Cells
Re. PLOP etc.
Re., re., ATM: Man in the Mirror
Re.,re., gregorian mirror-
Re Scope of Group Topics
Re The BOLO post that was in one of these groups a while ago
Re tiling a tile tool
Reading a Couder Null
Reading Figure45 Graphs
Reading Fringes? with Pictures :)
reading Ronchi image
Real new photos...
reamer
rebuilding a 6" f/15
rebuilding a 6" f/15 -making a crayford?
Recent Robo-Glass mill results
Recent work on 25 ins lightweigth mirror
Recoating not so BIG mirror
recommended book
Recommended suppliers for ATM Primary Mirrors
Reconstituting pitch
Recycling pitch-do or don't
Recycling reading glass
Cheap and Simple Red Dot Finder Mount
Redmond Washington members?
Reduce TDE
Yan: reducing Bath to basics.
Reducing the focal length
Reducing the weight of a SonoTube OTA???
Reference flat testing
Refiguring
Reflective Coating Services
Reflectivity Measurements
Reflectivity Measurment Attempt :)
Reflectivity Measurment Part2
reflex finder or simple pointer???
Refractor ATM
refractor baffles
refractor cell
refractor clarifications required.
Refractor tuneup
Singlet lenses for long focus refractors
refused old lent
Reheating Lap to Press Again
Rejoining the ATM List and Ken Hunter
relay lens
Relay lenses
Remaking mirror cell
Member removed from the Group
Removing coating
Repair of a bent telescope?
replacement "Edmund" clock drive motor?
REPLACEMENT for sonotube
Replacement Motor
reply to john 12 inch mirror
Replying to sender - change of subject title.
repost more info
[interferometry] Request for Information
request assistance making pole seats or wedges
Request for verification of secondary offset value
Res: re-cementing lenses
Resizing Surface Error Graphs for Posting
Restart DYI Mounts
Results of Mirror blank stress test posted...
Retention Clips Distortion on Mirror ?
reticle eyepiece
retouching turndown edge
return to fine grinding
Returning to a flat surface
Revamped Links
REVERSED MIRROR
Post and plates blanks was Ribbed Mirror Blanks
Richard's ribbed mirror blanks
Richard's worry about adverts on bahoo
Dave Harbour & Richard Schwartz?
Richard Schwartz is 62
Rider again
ridge near edge
Right angle finder
Ring around the edge during polishing
Ring lap grinding technique
Yan: RIP Art Bianconi
Ripples on machine polishing
Ritchey Chretien
RKE,and surplus shed
RMS=7.1 polishing improved ...20 mirror-scope..... 4
RMS of ROBO and Interferometry Round Robin profiles
Rob Willett's program for printing setting circles.
Robo anallysis
Robo-Focualt done, Now for some Kiln Questions
Monte Carlo & FigureXP , was ATM Robo-Focualt, Killing Time crunching numbers..
Robo-Foucault, A Fresh Start!
ATM Robo-Foucault, Image intensity, and Changing knife edge readings
Robo Foucault Open Source Software?
Robo-Foucault, Star & Ronchi-Star testing Major Screwup
Robo-Foucault, Star & Ronchi-Star testing Major Screwup
Robo-Foucault, the "Fresh Start" is in progress! :)
Robo Foucault VS. Interferometry, revisited
Robo Glass Mill (Whooo Hooo :)
Robo, PSI, Bath Interferometry, and Manual Foucault profiles compared
Robo vs Couder Mask vs Hartman vs RoboC Battle Royal!
ATM Robo Vs. The Intereferometer
ATM Robo1 VS Robo2
Robo2 VS The Micrometer
Robotic Figuring?
ROC Offset Constantly Changing in Fig45XP
ROC Test Done
Rocker box flexure - the impact on pointing accuracy
Rohtas Fort May 30
rolled off edge
Roller Chain
Ronchigram [k=-1] version 0.4 Alpha release with Camera Preview (with provision for Zoom In, Zoom Out, AutoFocus, Save Pic)
Ronchi app for android
Ronchi astig.
Ronchi challange
Ronchi daylight test
Ronchi drawings
Ronchi / Focault
Ronchi for windows misleading?
Ronchi, foucault test : beginners luck?
Ronchi grating
Ronchi help needed
ronchi howto
Ronchi image 20" mirror
Ronchi Images take 2
Ronchi Images of a 12.5 F5
Ronchi Images take 2
[ATM] Ronchi Movie of the ultra thin mirror and other ramblings.
Ronchi null ... briefly
Ronchi Null test for Paraboloids
Ronchi of Mitches mirrors was. New to group
[ATM] Ronchi profile technique
Ronchi quiz answer
Ronchi quiz answer
Ronchi Ruling
Ronchi Screen
ronchi screen with excel
Ronchi Shows Hooks but STREHL over .9-What Next?
Pravin Jat's 8" mirror Ronchi Test.
Ronchi test images of my cast cellular 16.5" mirror.
Ronchi with Cassegrain Mirror
Ronchigram [k=-1] version 0.4 Alpha release with Camera Preview (with provision for Zoom In, Zoom Out, AutoFocus, Save Pic)
Ronchigram [k=-1] version 0.4 Alpha release with Camera Preview (with provision for Zoom In, Zoom Out, AutoFocus, Save Pic)
Ross Null lens choice
Ross Null lens choice
Ross Null lens questions
Ross Null tester
Ross Null tester design parameters
Ross Null Testers
Ross Null Testers and other good ideas
RossNullXP, a new program based on an old program
Rotating Rings
Dehumidifying a refractor; odd-ball material that looks like rouge
Roughing in or grinding flat services
Round Robin, Robo, and interferometry profile comparison
RS232 to USB adapter
RTAFT Discrepancies/Details
RTAFT Discrepancies/Details
RTAFT Discrepancies/Details
Hubble was OpenFringe Strehl calcualation was RTAFT program
Using Permatex High-Temp Red RTV Silicon to Glue Secondary Mirror
RTV adhesive
ATM RTV for Primary?
Ruminations on Redshift and the expansion of the universe
Rush into F3.5
Russell Optics 72mm Wide-Field Plossl
Russian ATM book - translation to English - status report
Rutten Newtonian Design
sad news
What is the depth of the sagitta of a half inch thick, 6 inch F-3 mirror?
Sampling, pixel size, seeing, etc. (was Opinions Solicited)
Sandwiched/slumped mirror glass
Scatterplate interferometry
Schiefspiegler
Schiefspiegler scope
Schmidt Corrector, Beginners Luck
Schmidt corrector fabrication
Schmidt Corrector Grinding
Schmidt Photos
Schmit corrector for a 5" F1 sphere.
schmitch camera
ScienceDaily News Release: Study Moves 'Superlens' Closer To Reality
Scope size and fuzzies
Scoring and breaking 3/4" plate glass
scratch scratch
scratches during polishing
scratches during polishing :( (back to grinding it is)
Scratches on mirror
Scrounging materials
SCT Equations
SCT Equations
SCT Mirror
sct questions
search for old timer variable 60hz generator
Second Edition of Mark I Classical Cass tested (OMI optics)
Antares Optics Secondaries
[ATM] How to Re-Grind and Polish Secondary Mirrors
secondary holder and spider vane question
Secondary holder won't allow for mirror offset
Secondary in bad position.
[ATM] How to Re-Grind and Polish Secondary Mirrors
secondary mirror blanks supplier
Secondary mirror dilema ?
Secondary mirror holder
Secondary Mirror Size?
Thinner spiders: was Secondary obstruction - how measured?
secondary offset
secondary sizing and off set.
secondary sizing and off set.
Secondary Sizing for Wide Field Newt
Secondary sizing question
[ATM] seeing something I've never seen before when testing.....
Seeing Stars in the Daytime (eye and/or Silicon chip)?
Semi automated focault
Sense of humor / Group activities
Sequence for rough and fine grinding
Serrurier Truss Design
Servo motor control "how to"
Session 23 and an example of the system sensitivity
Session 24 The good the bad and the ugly.
session 9 comparison
Illuiminated Setting Circles
setting scope up for cc
Shaped back mirrors - removing glass and how much glass
Shaped back mirrors - removing glass and how much glass - and ans all
Shimming
Shipping Address For James
Shipping-Way to go UPS
Shooting
should I build a telescope?
Side Bearings
Side Forces on Drill Press
Silicone for mirror support
Silicone. yes or not?
ATM silver protective coat idea
silvering
simple alt azamuth mount
Simple Bath Interferometer
simple circut for gearded motor
simulated Foucault analysis of RP 8" f/6
simulated star test of session 24 data
Singlet lenses for long focus refractors
Sinus Iridum
Six Inch Telescope Tutorial
Six point mirror cell with right-angle collimation adjustments
Six Tests input question
Six Tubes vs. Eight Tubes
Fw: Sixtests and P-V Error
[ATM] Betr.: Size of azimuth bearings
Sizing up the Newtonian secondary mirror
Skeptic's Toolbox 2005!
Sky and Telescope, January 1972 Page 47-52 - Unobstructed Maksutov Telescope
Sky Commander homebrew mount
sky meter
sled focuser?
Sleekfest 2004
[ATM] Slicing 4" Thick Mirrors in Half
Sliding an OTA for balance on a dovetail plate???
Slight tangent on the Mirror Silvering thread
Slightly OT, I have some tooling for sale....
Slin Pickings at RMSS'03 ATM Walkabout
Slipping Crayford focuser
slit aperature
[ATM] Slit less wire test?
Slitless testers, rough mirrors, pressing
Slitless testers, rough mirrors, pressing
Slitless testing
Slits, Pinholes, Points, & CCD's
Slitted vs Slitless Foucault Imaging
Sloppy or Accepted ED Lens Manufacture
Working with slumped blanks?
slumped honeycomb?
What is optimum ratio, aperture to thickness, for slumped mirror
[ATM] Slumping Mirrors
Slumping a Mirror
Slumping fast mirrors
Slumping Glass
Slumping plate glass
Slury Pump was: Awful quiet these days...
Slury Pump was: Awful quiet these days...
small blemish on one blank
small CDK scope
Small lens radii - Autostigmatic microscope.
Small Linear Ball Bearing Slides on eBay
small motors
Small Mount Shelter
Very small TDE
Smoking Pitch
Smooth Polish
Smoother, but Worser
sneferu2
Soft Pitch
software or excel sheet for plano-convex lens focal length
software or excel sheet for plano-convex lens focal length [1 At
Sol Gel Technology
solar moon dial
solar tracker
solid 10" mirror cell
solutions to stop flexing
Some adhesives are not good for your telescope
Some improvements on truss telescopeses
Some improvements on truss telescopeses
Some pictures of my progress on my crrnt project.
Something I Haven't Seen Before
Something of interest
ATM Something Usefull? {NOT!}
Sonotube issue
sonotube prep?
Sorbothane covered mirror cell....
Sorbothane mirror cell.... How thin can glass now be?
Sorbothane mirror cell.... How thin can glass now be?
Sorbothane mirror cell.... very kind CNC offer
sorry, how to fix?
SoundStepper V4.0 appears to be done!
Soundstepper is working!
SoundStepper V4.0 appears to be done!
sources for 5" secondary
Source for 16-20" mirror blanks.
Source for anodized 1.25" alum tubes
Source for Appleply plywood
source for carbon fiber truss tubes
Source for diagonal parts
Source for EP barrels
source for glass?
Source of 1 1/4" Helical Focusers
source of secondaries
sources for 5" secondary
Sources for Kydex?
Sources of astig, trefoil etc
[Spam] Reducing the weight of a SonoTube OTA???
[SPAM] 20" equatorial almost finished
{Spam?} 220 1/3 overhang
{Spam?} central clear region
{Spam?} {Spam?} extra helpful things
{Spam?} {Spam?} jan your 8" f4
[Spam] Reducing the weight of a SonoTube OTA???
{Spam?} {Spam?} extra helpful things
{Spam?} {Spam?} jan your 8" f4
spark
Speaking of advise.
sperometer autor of this file
Spheres was I would like to measure a Tasco mirror
spheric tool
spherical mirror
spherometer construction
spherometer construction
Corrected Spherometer Spreadsheet posted
Spherometer spreadsheet a.nd photo's posted
Spherometer spreadsheet and photo's posted
One way to make a spider for a Newtonian
spider in Newt design
Spider vanes
Spin-Parabolizing
Splitting a blank.
Springs instead of counterweight?
Sputtering vs vacuum deposition
spy out
Spyder Advice
Square mirrors and 4 collimation points
stabilite mirror question
Stabilizing a three-legged platform
Stainless steel
Star Image and Airy Disk
Star Men
star party Feb 27 another off topic
[ATM] Fw: Distances required for star test are much too long.
Star Test, Double-Double
Star Test report
Star Test Results
Star testing a 1-meter Naysmyth
star testing ... best exit pupil?
Star tests for Project 40
Starry Host 10" F11
start
Started 8" mirror project
started a small mirror
starting a mirror with 80 grit instead of 60 ... Bad idea?
Starting my first 8" Mirror
statbilised bino
Status of stuff
Status of stuff
Holy spider and stealth hacksaw blades.
Steel Overarm Weight
Stellafane
Step Motor Pulse Timing
Stepper driver algorithm, anybody?
Stepper Motor Speed Pulse Controller & Driver Board
Still going
STILL NOT WORKING + I DON'T NEED TO FINISH FOR SCHOOL ANYMORE
STILL NOT WORKING + I DON'T NEED TO FINISH FOR SCHOOL ANYMORE
still working.....+question on pitchlaps
Stinkin high dollar eyepieces
Stolen Scope
Stopped work...
Storing telescopes
Strain Testing
Straining pitch, supplier, pitch tester, etc.
Strange mirror problem
Strehl Vs. P-V Wavefront
stressed glass
String tension for a string dob?
stripping and recoating gold-coated mirrors
Stripping chromium
stripping mirrors
Stroke to polish edge?
Mixing figuring strokes
Strong Focuser
Stubborn 1/2 " edge zone
Stuck Mirror
stuck pitch lap is free
Study of mirror cell using foam pad support on very thin mirror
Stuff for sale... Website
sub diameter lap tool, what size to get rid of oblate
Subject: a step in the right direction, was, points pads and scientist
[ATM] Substitute for ebony star
Substrate coating
Coma corrector suggestions
sun projection
Sun testing a polished mirror
SUPER light-weight 30" Dobsonian !!!!!!!!!
supplier of quartz 12" blank ?
support on 8" mirror cell
Supporting a Mirror [was: Plop]
Surface Error Graph interpretation
Surface Rough??!
Surface Rough RECAP
Surface Rough Ronchi's
Surplus Shed 6" f/1.25 triplet lenses
Sv: Amici Roof Prism an abysmal failure
Sv: Amici Roof Prism an abysmal failure NOW YOU ARE COOKING!
Sv: Cell design
Sv: Focuser baffling was Paper Lining
Sv: Freedom by degrees
Sv: How much does mirror quality really matter?
Sv: Mitutoyo readout
Sv: Secondary obstruction - how measured?
Swartz's, cave test
Synthetic pitch?
Taking apart objective lens
Target conic
[ATM] TUE not TDE
TDE help!!!!
TDE Nearly Gone
TDE or just a follow to the tread "Getting Close"
TDE repair
TDE Saga--Final Chapter
TDE Saga-Penultimate Word
Techniques for producing matching dissimilar diameter mirrors???
Azimuth bearing - Teflon dimensioning
Teflon sources
telescope design help
telescope drive corrector help
Telescope Drives
Telescope Economics regarding ATMers in latest Sky&Tel
Telescope making in Europe
Telescope making in Turkey
telescope making jobs/careers
Telescope Making Magazine
Telescope Making Magazines?
Telescope mirror blanks dot com
[ATM] pringles and telescope mirrors
Telescope mount design
telescope pier question
Telescopes
Telrad Dew Shield - Easy and Inexpensive
temperatures - Digest Number 2276
How to identify tempered glass with certainty
Template for two mirror Cass, DK and RC systems uploaded
Terrestrial & Star focusing eyepiece vs camera(rookie)
Testing e-mail - Please ignore
Test flat.
Confusing test results
Test results posted for two mirrors
Test Scope - Bottom line.
Test Scope - Can I compare?
Test Scope - Foucault tester
Test Scope - Now how to tell if the mirror is good or bad?
Test Scope - Ronchi Screen?
Test Stand Astig measurments
Test stand for a 20"
Test stand induced astig and Foucault measurments.
Test tower
Making an artificial star tester
links for testers
Testers - Artificial stars?
testing a convex sphere
Testing a mirror for a beginner (long)
Testing coated secondary for flatness
Testing fast mirrors
testing gauntlet
Testing prolate ellipsoids
texta or sharpie test
Thank You ATM FREE
Thank you Bob May
Thanks to all who helped - Tony Gondola has contacted me and all is well
Thanks Ken!
the 1.8 factor
the 1004X
The 16 edge and a two Foucault image puzzle
the best mount
the best way to clean len
the big pitch experiment...
The Ding, the interferogram, and the analysis
The End of ATM Free?
The first honeycomb mirror blank is cooking!
The g sum method of designing refractors
the homemade small fast mirror
the impact of flocking
The last "Final Iteration" of 2.5" F-4 finder scope
The lens system in CAD Drawing using OSLO
The Oblate Sphere that won't die!!
the paraboloidal donut
The perfect lap mold...missing link
The Pinstick
The PWM circuit
[ATM] The results of the glass casting run.
The Schmidt-Newtonian
The Ukraine
The Verizon Effect
The zonal Foucault test is free of inherent bias
[ATM] The zonal Foucault test is free of inherent correction bias - some supporting graphs
There's a lump on my mirror!
There's the Rub
Thermal cooling of a mirror at Okie Tex. [6 Attachments]
Thickness of triangles
thin mirror cell
Thin slumped mirror blanks.
Thinking about leaning mirror making, how much time is involved
Thinking about learning mirror making, how much time is involved?
Thinner spiders: was Secondary obstruction - how measured?
FRUSTRATION ABOUT "This Group - (note changed subject!)" -- again!
This has to be the height of stupidity and insensitivity!
Thomas Jefferson concave mirror
Thought this might intrest you
Threaded Balls/Ball Ends
threaded tube connectors
fine threads
Throwing 1" rocks
Tile grinding tool
Fwd: Delmarva MMM (was [ATM] tile tool)
Tile tool for Machine grinding
tile tool nightmare
Time off for some interesting OT questions...
Time to re-make lap?
Tiny diagonals
Titan Gear Help
To correct or under correct. . . . . . . that is the question
TO EVERYBODY: my venus viewing and telescope help questions
TO EVERYBODY: my venus viewing and telescope helpquestions
ATM Fw: to parabolize or not......II
To the Coaters! Away!
To try or not
Tons of free optical glass, tomorrow
TOOL AND MIRROR AS A TILE
Tool for fine grinding
Tool question
Torus 12.5" Blem
[Torusmirrorgroup] [obsessionusers] Astro Fest
Toying with grinding
TRACE Program can be help
Manual or Help on TraceXP
TraceXP 3.13
traceXP error
TraceXP Example Files and Documentation
Yan: Yan: TraceXp with decimal comma
Tracking mount for camera
Traveling Plans
Traveling with 2 Meters
Trepanning glass (8" Cassegrain Project)
Trepanning glass (8" Cassegrain Project)
Trepanning photos
Trepanning Problem
Triangles
trilateral mount
Trilateral Rules of Thumb?
Trimming Pitch Laps, etc...
Trip...Kevin Frederick [2 Attachments]
Tripod legs angle
Truss analysis - compact triangular arrangement
ATM Truss analysis software - free
ATM Truss defelection analysis - gravity now included
Truss Flex Analysis - Is there an Engineer in the House?
Truss mania
Truss poles
Truss secondary cage
Truss tube conversion
Truss Tube Material?
Truss tube on equatorial mount
Trusses and very thin members - sagging in the middle.
Trying to improve my interferograms
Trying to reach Tony Gondola
Reducing the weight of a SonoTube OTA???
tube construction, thanks
tube flexure/idea/advices
tube radius
tubes size calculator?
[ATM] TUE not TDE
tuned mass damper as a counterweight
Turkey ATY9009 workshop and telescope (ATY = ATM)
Turned down edge- causes, prevention, cure
Turned down edge- causes, prevention, cure
Two fine grinding questions
Two flexed 6" mirrors
two mirror coating questions
two mirror coatings,delayed response:sorry
Two new photos
two novice questions
Two-part soft epoxies - test pour results
Two questions un-related
Two Vane Spider?
Twyman effect, polishing, and very thin mirrors.
uhhhh....
Ultra Thin ronchi, Foucault, Interferometry one stop shop
Ultra thin torture
[ATM] Ultrathin lateral support at 30 deg.
UltraThin on 3 pads and 2 pegs
[ATM] UltraThin tape as lateral support results
Un-parabolizing a mirror?
unattended polishing video
Q's 8" f/5 (WAS Under the radar? "Party crasher"?)
Unknown grating
Unknown grating
(unknown) IT'S A VIRUS!
Unpolished Edges of Mirror
unpolished mirror on sun and moon
unusable telescope party
Unusual 3 mirror telescope
Up-Grading Odyssey Dob
uploaded file
Uploaded white paper
use of NEWT for baffle design
Used Masks, Mirror Appears to be OKAY, and Thank you
used sets
Using 16" x 3/4 " port hole
Using a 6" F-4 as a terrestial scope
Using a Bath
using a paracorr type II or an Explore Scientific HRCC
using Bath to figure mirror
Using NEWT software to define OTA geometry
Using Plop for cell design-Parts Sizes
Using The Mask
Using WAO with Pitch Lap
UTA orientation on truss tube dob question
UV Coating Removal
Vacuum Equipment for Sale
vacuum mirror
value on a 17 1/2" Coulter mirror?
Variable Iris Diaphragm as Focuser Baffle
varmints
varmints (in space?)
vc103 super circuit cam
Velcro to secure the primary?
venus observation
Venus transit and Palomar
Vertical alignment of wire spiders
Very fast focal ratio with afocal imaging
Sorbothane mirror cell.... very kind CNC offer
very small concave mirrors
Very small TDE
Vibration control material
vibrations, tuned mass damper, dashpot, etc...
Video translation subtitles and text
How bad is it when NEWT says "75% vignetting at focuser" YES
Visiting Tampa, FL, Wash, DC, and Nashville, TN soon - Astronomy things to do?
Visual observation of the Integrated Flux Nebula near M81, M82
Visual Paracorr/Focuser Calcs and Photo Paracorr Quesion
Vixen mount problem
Vladimir Dragonov's Patent
Wah wah wah! Was: LED Current - Mini Mag Lite Conversion Kit
Wah wah wah! Was: LED Current - Mini Mag Lite Conversion Kit
Waineo Elgin grinding machine-need help
Waino (Maksutov?) null test
Waite Research finally has a web site and a great one too!
want to order parts for Bath Interferometer
Wanted: motorized side arm mod for mirror grinding bench
warning: Massive cross posting, slightly OT: My impending visit to the USA.
Warp Factor in A Digital Setting Circle
was 16" blank source/NOW: Thin blanks
was: depth of the sagitta of a half inch thick, 6 inch F-3 mirror? now flexing
Was- Digest Number 786 now -catboat
Watch what you ask for
water etched mirror
Wavefront error in Fizeau interferometer
wavelength error Versus Magnification
Weather forecasting for sites in Northern Canada
Web Ring
Webback Mirror Blanks
Wedge on tool
weight distribution in pressing
Weight loss OTA advice
Weight Reduction in the Rocker Box
weird haze
weird zonal readings
Well, it's a start, sort of...
Well looky here folks; "Artificial star generation apparatus and method for
Well looky here folks; "Artificial star generation apparatus and method for telescope systems"
WEP
Coma was what a diff f/3 makes
What's the optimum grit size for rough hogging?
What's up with CAD? 2D vs 3D, drawings, renderings, etc..
What are disadvantages of gluing mirror to triangles?
what are RMS Zernike coefficients in OF
What do they call those machined rings that allow an OTA to rotate?
What do you all think.(Is it time too celebrate)
What do you do with a massive old mirror?
What happened to Ronchi for Windows?
What humor?
What If....?
What is an "Auto-collimation Eyepiece"?
What is optimum ratio, aperture to thickness, for slumped mirror
What is optimum ratio, aperture to thickness, for slumped mirror
What is optimum ratio, aperture to thickness, for slumped mirrors?
What is read-out test
What is the depth of the sagitta of a half inch thick, 6 inch F-3 mirror?
What is the depth of the sagitta of a half inch thick, 6 inch F-3 mirror?
What is the fastest drying finish for hard woods?
what is the ideal atmospheric temperature range to grind mirrors in?
What is the largest mirror you'd consider grinding by hand
what is the lightest weight 12.5 newt out there
What is the optimum bearing diameter for a Dobsonian mount?
What is the relationship between polar drive gear diameter and a
What is the relationship between polar drive gear diameter and aperture?
what is this, a new project???
what makes a dark background ?
What Point Mirror Cell?
What RPM do Lapidary machines use?
What sort of tool for correcting a very deep "ashtray" of a mirror
what stroke takes out a central hill?
What the Heck is a "Billot"?
what the interferometer saw on John's mirror
What the schmidt?
What to expect to see with a good 6" f/8 telescope
What to use when cleaning lenses?
What type of motor did you use when you made your mirror grinding be
What type of motor did you use when you made your mirror grinding bench?
What type of stroke to remove gold coating?
What will be a good quality target for first time mirror maker
When did Corning start making thick blanks for mirrors?
When phase unwrap errors rule [1 Attachment]
when start grinding a 12.5 inch f 5 mirror tool on top or bottom ?
which Bath version
Which camera
Which filter for supressing yellow sodium light glow
Which stroke for a sub-diameter hogging tool?
Which wire is which on a stepper motor?
WHITCH CCD
white house star party
WHOOOOOOAAA!!! I ""tested"" my mirror
Why Blanchard grind both top and bottom of a mirror blank?
Why Did You Grind Your Mirror?
Why does "diameter of central obstruction" affect the effective zone radius?
Why is Pluto More Visible?
Why Lurie-Houghton telescope very rare in the ATM or market?
Why must secondary mirrors be so thick?
Why not use GLAZED tiles?
why some top apo refractors comes with rack & pinion focuser
why some top apo refractors comes with rack & pinion focuser instead of crayford
why some top apo refractors comes with rack & pinion focuser instead of crayford
Why we do this
Wide Field Cass
Wiki was A reminder about atmsite.org
wikipedia on kydex
Will a Star Test be affected by a undercorrected mirror?
Will a stepper motor drive another stepper motor?
Will the real Meade telescope please stand up? Message List
William bell phone # doesn't work
Willman Bell Catalog
Willmann Bell CeO sleeks
Windowing functions was Getting Close - Diffraction Ring?
Windows and Water
Winter Star Party '05 field pictures
Wire Spider Plans
[ATM] Slit less wire test?
Wire Test a parabola
With friends like this... Who needs enemies ?
re; wooden mirror base
ATM Working on a Parabol
Working Plate glass vs Pyrex
Working with Gifs
Working with slumped blanks?
world's darkest material
Worm gear sets for sale on eBay
Would like to make my own scope.
X RAY Astronomy for amator ??????????
Yahoo's new look
yahoo groups pics
Yahoo Problem?
Yan: a 20" dall-kirkham
Yan: Yan: [ATM] Dual conjugate test for prolate ellipsoid
Yan: downloading Figure XP
Yan: How to carry heavy mirror to test stand
Yan: Making 0,7 meter Cdk
Yan: Paul Valelli
Yan: PDI
Yan: reducing Bath to basics.
Yan: RIP Art Bianconi
Yan: Yan: TraceXp with decimal comma
Yan: Yan: PDI
Yan: Yan: TraceXp with decimal comma
yolo/ off-axis mirror
You can still buy lead! Who'd have thunk?
You can still buy lead! Who d have thunk?
You don't need to use heat when curing composites. . . . . . but
Young lions...
Your Couder mask - you could be happy without it
zero expansion standoffs
Zerodur or Astrositall Source?
zirconium oxide polish
and [ATM] zone one challenge
Interferometry Questions - [ATM] Unable to fully correct outer zones in figuring
Zones etc. (was: 8 Inch Cassegrain Project)