RE: [SPAM] Re: [SPAM] [ap-ug] how to mount a traveler on a AP 180EDT


Oct 2, 2001

 


----------------------------

#7551 Oct 2, 2001

I'm offering my AP 180 EDT (serial#18023) for sale,

the price is $12,000 firm. Preference will be given

to it's original owner (you know who you are).

I will not entertain higher bids, don't try to start

a bidding war.

The instrument is in very good condition.

Serious inquiries only stevenhoffman53@...

I figured I'd offer it in this forum before considering

astromart or ebay...please forgive me if I offend anyone,

or break any rules.



----------------------------

#7552 Oct 2, 2001

sink45ny@... wrote: >

> I'm offering my AP 180 EDT (serial#18023) for sale,

> the price is $12,000 firm. Preference will be given

> to it's original owner (you know who you are).



I'll pass. I have a few too many scopes on hand already.



Thanks,



Joe







> I will not entertain higher bids, don't try to start

> a bidding war.

> The instrument is in very good condition.

> Serious inquiries only stevenhoffman53@...

> I figured I'd offer it in this forum before considering

> astromart or ebay...please forgive me if I offend anyone,

> or break any rules.

>

> To UNSUBSCRIBE, or for general information on the ap-ug list

> see groups.yahoo.com/group/ap-ug

>

> Your use of Yahoo! Groups is subject to docs.yahoo.com/info/terms/



----------------------------

#7553 Oct 2, 2001

Okay Joe..thanks for getting back to me.



steve hoffman





>From: joe astrojoe@...>

>Reply-To: ap-ug@yahoogroups.com

>To: ap-ug@yahoogroups.com

>Subject: Re: [ap-ug] ap 180edt

>Date: Tue, 02 Oct 2001 13:02:00 -0400

>

>sink45ny@... wrote:

> >

> > I'm offering my AP 180 EDT (serial#18023) for sale,

> > the price is $12,000 firm. Preference will be given

> > to it's original owner (you know who you are).

>

>I'll pass. I have a few too many scopes on hand already.

>

>Thanks,

>

>Joe

>

>

>

>

> > I will not entertain higher bids, don't try to start

> > a bidding war.

> > The instrument is in very good condition.

> > Serious inquiries only stevenhoffman53@...

> > I figured I'd offer it in this forum before considering

> > astromart or ebay...please forgive me if I offend anyone,

> > or break any rules.

> >

> > To UNSUBSCRIBE, or for general information on the ap-ug list

> > see groups.yahoo.com/group/ap-ug

> >

> > Your use of Yahoo! Groups is subject to

>docs.yahoo.com/info/terms/

>

>

>To UNSUBSCRIBE, or for general information on the ap-ug list

>see groups.yahoo.com/group/ap-ug

>

>Your use of Yahoo! Groups is subject to docs.yahoo.com/info/terms/

>

>

>





---------------

Get your FREE download of MSN Explorer at explorer.msn.com/intl.asp



----------------------------

#7563 Oct 2, 2001

--- In ap-ug@y..., sink45ny@y... wrote: > I'm offering my AP 180 EDT (serial#18023) for sale,

> the price is $12,000 firm. Preference will be given

> to it's original owner (you know who you are).

> I will not entertain higher bids, don't try to start

> a bidding war.

> The instrument is in very good condition.

> Serious inquiries only stevenhoffman53@h...

> I figured I'd offer it in this forum before considering

> astromart or ebay...please forgive me if I offend anyone,

> or break any rules.



I am interested. I believe that I sent you my home/office e-mail &

phone numbers.



----------------------------

#7574 Oct 3, 2001

From: "steven hoffman" shoff@...> > The other gentleman is having his doubts...nows the

> time to jump in if you'd like.







Hi Steve!



You should have caught 18 months ago and 2000 points on the NASDAQ. ;)



Not that's it not worth it, it might be. But if I had 12 grand I'd just buy

a TMB 175 f/8 brand spankin new with 4 inch rotating focuser and be done

with it.



However I am _not_ arguing with you! :) I _do_ envy the person that gets it!

They are very lucky. I wish you well.



Clear skies,

Jeff



----------------------------

#7575 Oct 3, 2001

In a message dated 10/3/2001 1:02:57 PM Pacific Daylight Time,

jgortatows@... writes:



> Not that's it not worth it, it might be. But if I had 12 grand I'd just buy

> a TMB 175 f/8 brand spankin new with 4 inch rotating focuser and be done

> with it.

>

>



I thought you already had a 7" TMB with 4" focuser?



Roland Christen





[Non-text portions of this message have been removed]



----------------------------

#7577 Oct 3, 2001

----- Original Message -----

From: chris1011@...>

> In a message dated 10/3/2001 1:02:57 PM Pacific Daylight Time,

> jgortatows@... writes:

> > Not that's it not worth it, it might be. But if I had 12 grand I'd just

buy

> > a TMB 175 f/8 brand spankin new with 4 inch rotating focuser and be done

> > with it.





Hi Roland,



Very kind of you actually to remember my telescope. I do indeed already have

a TMB 180. But based on my observations though it, and the writings of

others who've observed through your 180EDTs, your EDT designs have less

color than the TMB 180 "EDStar". At least mine. No, I have not done a

side-by-side. I was going to at CalStar with Rich N's AP 180EDT. But health

problems cropped up scrubbing that plan.



If I could have afforded it, and if I could have justified the extra 4000

dollars, Tom's 175 design is not unlike the 'masters' current designs.

That's you! :) That is, they are color free.



Based on my _limited_ experience your 1993 130EDT f/8 has less color than

the TMB180 f/9. I had hoped the 180 might be just a tad more color or less

color. But to my eye, it's an almost an achromat. At least on bright objects

like Vega, Antares, Arcturus, etc. Not that I am knocking it. For $1000 per

inch, it's a fine scope. It's just my expectations apparently exceeded

reality.



For all I know, the 180EDT might also not meet my expectations. Since I will

not spend $12,000 to find out, I guess I'll move along and wait for my

chance at an AP Mak-Newt.



Clear skies,

Jeff







----------------------------

#7579 Oct 3, 2001

The 180 EDTs have surprisingly low color. Visually on bright stars (Vega) I

find they have less color than a 155EDF. The 180 is one impressive scope.



Bob Luffel

>

> ----- Original Message -----

> From: chris1011@...>

> > In a message dated 10/3/2001 1:02:57 PM Pacific Daylight Time,

> > jgortatows@... writes:

> > > Not that's it not worth it, it might be. But if I had 12 grand I'd just

> buy

> > > a TMB 175 f/8 brand spankin new with 4 inch rotating focuser and be done

> > > with it.

>

>

> Hi Roland,

>

> Very kind of you actually to remember my telescope. I do indeed already have

> a TMB 180. But based on my observations though it, and the writings of

> others who've observed through your 180EDTs, your EDT designs have less

> color than the TMB 180 "EDStar". At least mine. No, I have not done a

> side-by-side. I was going to at CalStar with Rich N's AP 180EDT. But health

> problems cropped up scrubbing that plan.

>

> If I could have afforded it, and if I could have justified the extra 4000

> dollars, Tom's 175 design is not unlike the 'masters' current designs.

> That's you! :) That is, they are color free.

>

> Based on my _limited_ experience your 1993 130EDT f/8 has less color than

> the TMB180 f/9. I had hoped the 180 might be just a tad more color or less

> color. But to my eye, it's an almost an achromat. At least on bright objects

> like Vega, Antares, Arcturus, etc. Not that I am knocking it. For $1000 per

> inch, it's a fine scope. It's just my expectations apparently exceeded

> reality.

>

> For all I know, the 180EDT might also not meet my expectations. Since I will

> not spend $12,000 to find out, I guess I'll move along and wait for my

> chance at an AP Mak-Newt.

>

> Clear skies,

> Jeff

>

>

>

> To UNSUBSCRIBE, or for general information on the ap-ug list

> see groups.yahoo.com/group/ap-ug

>

> Your use of Yahoo! Groups is subject to docs.yahoo.com/info/terms/

>

>

>



----------------------------

#7582 Oct 3, 2001

Hi Bob, I have aso had the brief opportunity at '96 Astrofest to view through 2 180 EDT's, and also to view through Charles Sinsovsky's 180EDF over the years that he has attended the Fest.



In '96, there was really no one around at the time, and I was using these 2 EDT's, and the Mak 9-1/4" Like they were my very own! (Marj, Roland, Tom, where were you folks?!) Cruised to, and from Jupiter (Just Awesome!), and had the opportunity to Star Test too.



To this very day, I can't ever claim to be any type of a authority on the Star-Test, but I will say this: I am one fussy so, and so, and I certainly could ot find anything to complain about with the views either refractor, or the MN was giving up. I remember these views like yesterday. I think '96,'97,and even '98 were pretty good years at the fest for seeing.



I didn't note any obvious color on the 180EDT on Jupiter, nor the Star test.

Just clean, color-free identical diffraction pattens both sides of focus.

One of these EDT's I later learned was Tom Back's own. I shed a tear finding out that Roland would no longer make these. :-)



In conversation with Tom Back in '99, I had an interest in the TMB 180 myself. There was at that time the choice between two models ($7K+10K)

I thought Tom at that time had stated that the 180 TMB would be close in color correction to the AP180EDT (With a similar, Russian type of FPL-52) but pehaps I am wrong here? I'm surprised Jeff, that the 180TMB exhibits as much color as you say? Perhaps something still is not correct? Tom would surely know, as he's the designer of this lens.

Mark



----------------------------

#7583 Oct 3, 2001

Mark.....



I'm the proud owner of one of Tom Back's 175 F8. This lens design is a

triplet with superb colour correction. I have only had it a few weeks,

but very impressed. I have wanted a 7 inch APO for some years and I

think it was in 1997 that I asked Marj to put my name on the list for

the AP 7 inch F7, but regrettably I had just missed out when production

of these scopes ceased :-(



Jeff's 180 is a doublet, although still an APO, it doesn't have the

colour correction of the triplet 175 or any AP refractors. But as

mentioned it is still very good and much cheaper than the 175.



My mind boggles with 7 inch refractors - the cost of a 7 inch F8 triplet

TMB is .8,000, yet a Tak 6 inch is *more* expensive (.9,000). I dread to

think of the price of a 7 inch Tak triplet!!



Adrian





In message 9pg5hl+autv@...>, markdambrosio@... writes >Hi Bob, I have aso had the brief opportunity at '96 Astrofest to view through 2

>180 EDT's, and also to view through Charles Sinsovsky's 180EDF over the years

>that he has attended the Fest.

>

>In '96, there was really no one around at the time, and I was using these 2

>EDT's, and the Mak 9-1/4" Like they were my very own! (Marj, Roland, Tom, where

>were you folks?!) Cruised to, and from Jupiter (Just Awesome!), and had the

>opportunity to Star Test too.

>

>To this very day, I can't ever claim to be any type of a authority on the Star-

>Test, but I will say this: I am one fussy so, and so, and I certainly could ot

>find anything to complain about with the views either refractor, or the MN was

>giving up. I remember these views like yesterday. I think '96,'97,and even '98

>were pretty good years at the fest for seeing.

>

>I didn't note any obvious color on the 180EDT on Jupiter, nor the Star test.

>Just clean, color-free identical diffraction pattens both sides of focus.

>One of these EDT's I later learned was Tom Back's own. I shed a tear finding

>out that Roland would no longer make these. :-)

>

>In conversation with Tom Back in '99, I had an interest in the TMB 180 myself.

>There was at that time the choice between two models ($7K+10K)

>I thought Tom at that time had stated that the 180 TMB would be close in color

>correction to the AP180EDT (With a similar, Russian type of FPL-52) but pehaps I

>am wrong here? I'm surprised Jeff, that the 180TMB exhibits as much color as

>you say? Perhaps something still is not correct? Tom would surely know, as

>he's the designer of this lens.

>Mark

>

>

>

>To UNSUBSCRIBE, or for general information on the ap-ug list

>see groups.yahoo.com/group/ap-ug

>

>Your use of Yahoo! Groups is subject to docs.yahoo.com/info/terms/

>

>



Adrian Catterall, CCD astronomer

email: Catterall@...

Visit my Web page at: www.observatory.demon.co.uk

Guilden Morden

Hertfordshire

U.K.







----------------------------

#7584 Oct 3, 2001

I really really really want everyone to know, I am talk from inexperience,

not experience. I am no optical expert. I just report what I see. I still do

own a nice 1993 130EDT, a nice 7" Teleport with a very nice Zambuto f/5.6

mirror, and an 18" F/4.5 dob with a Swayze mirror: Having said that...

----- Original Message -----

From: markdambrosio@...>

> pehaps I am wrong here? I'm surprised Jeff, that the 180TMB exhibits as

> much color as you say? Perhaps something still is not correct? Tom would

> surely know, as he's the designer of this lens.



Some day, when I get up the gumption I will send the scope to Tom for

verification/fixing/alignment whatever. I assure you it's a chore shipping a

scope as big as the 180. Fifty six pounds! I'll tell you this, if anyone of

you would like to drop by the Los Angeles/Orange/San Diego/Riverside county

area I'll set it up and you can judge for yourself (Derek?g>). Maybe it

_is_ me. But there is clear as day, a violet haze around bright stars. I do

NOT notice it (or did not, it's been a month or so since I've had it out

because of other reasons) on the moon's limb. Funny huh?



Look, I am hopeful once I get a season of Jupiter watching in, I'll be

thrilled with it. I am 'hoping' that's the case. Right now, I do not think

it's performing up to my expectations with respect to color correction. I'd

hoped to have the same color correction as my 1993 130EDT f/8. BUT and this

is a big big big _but_, I may have had the _wrong_ expectations. I figured

you'd have had to look hard for some color, but in the end find it. I did

not figure that it would be as 'obvious' to me. Remember, the 180 is the

only scope in his line to not use the 'exotic' glass. Everything else, from

what I read is _superb_ and color free. And also remember I am know big

be-all-end-all judge of telescopes.



Maybe my eyes are just sensitive to it. Beats me... BTW: If you ever do

business with Tom Back, you'll not regret it. He is a real decent guy with a

lot of pride in his work. I know he's very proud of the new designs. I'm

sure that any one of you would be just as happy with a TMB 105, 130, 152, or

175 telescope as an AP.



Regards,

Jeff



----------------------------

#7585 Oct 3, 2001

----- Original Message -----

From: "Adrian Catterall" Catterall@...>



Jeff's 180 is a doublet, although still an APO, it doesn't have the

colour correction of the triplet 175 or any AP refractors. But as

mentioned it is still very good and much cheaper than the 175.





Small correction Adrian. It's my understanding it _is_ a triplet. It uses

'less expensive' glass. Hence the price of being 3000 dollars (US) less than

the 175.



Clear skies,

Jeff



----------------------------

#7586 Oct 3, 2001

In a message dated 10/3/2001 4:42:54 PM Pacific Daylight Time,

Catterall@... writes:



> Jeff's 180 is a doublet, although still an APO



I'm pretty sure it's a triplet.



Roland Christen





[Non-text portions of this message have been removed]



----------------------------

#7588 Oct 3, 2001

--- In ap-ug@y..., "Jeffrey D. Gortatowsky" jgortatows@a...> wrote: > I'll tell you this, if anyone of

> you would like to drop by the Los Angeles/Orange/San Diego/Riverside

county > area I'll set it up and you can judge for yourself (Derek?g>).





Jeff,



One of these days soon, we have to meet at OC astro club site?

I can bring a TMB152. I'm sure someone will be there with an

AP.





Tim Povlick

San Juan Capistrano, CA



----------------------------

#7592 Oct 3, 2001

Hi Jeff, Please forgive me, as I'm not trying to put down this beautiful scope you have. I wish I was as fortunate.



About Tom, I consider him to be a very good freind of mine, and he always will be. He is a fair man, and much fun to be with. I would not hesitate to buy a scope from Tom, and hopefully if some funds ($$$) ever come my way in the future, I may hopefully fullfill my dream of owning a 7" Refractor. My 1200 really "longs" for an instrument such as this. Mark



----------------------------

#7593 Oct 3, 2001

I'd jump in, the water's fine!





Agreed. I have gotten a few observing sessions in so far this season, and

have a sketch of Saturn that I made with the AP 5.1" f/8.35 in early

September is at:



users.metro2000.net/~ericj/saturn090601.html



Clear Skies,



Eric



----------------------------

#7597 Oct 4, 2001

From: "Robert Provin" postmaster@...>

> Hi Jeff,

> It's my understanding (from what I remember in a communication from

> Thomas Back) that the 180 EDStar is comparable in color correction to

> the pre ED AP scopes (these were the 178 f/9 models).



Hi Robert. That would jive with my observations.



----------------------------

#7602 Oct 4, 2001

Robert,



That doesn't seem right. Why would an ED triplet design have the

same level of color correction as a 15 year old pre ED triplet design?



Steve



--- In ap-ug@y..., "Robert Provin" postmaster@v...> wrote:



> Hi Jeff,

> It's my understanding (from what I remember in a communication from

> Thomas Back) that the 180 EDStar is comparable in color correction

to

> the pre ED AP scopes (these were the 178 f/9 models).

>

> Robert







----------------------------

#7605 Oct 4, 2001

ED can mean many things. The glass costs of high end ED lens sets can be significant. Low end ED glass sets do not give the designer the

ability to create high end ED optics performance.The designs themselves and levels of spherical and chromatic corrections are all different depending on

the designer's intent. Level of effort in figuring can also vastly affect performance. Meade's own ED designs are examples of marketing

hooplah that bears little relationship to actual performance when compared to 'the real thing'.



Stew

>>> sqrlman@... 10/04/01 10:51AM >>>

Robert,



That doesn't seem right. Why would an ED triplet design have the

same level of color correction as a 15 year old pre ED triplet design?



Steve



--- In ap-ug@y..., "Robert Provin" postmaster@v...> wrote:



> Hi Jeff,

> It's my understanding (from what I remember in a communication from

> Thomas Back) that the 180 EDStar is comparable in color correction

to

> the pre ED AP scopes (these were the 178 f/9 models).

>

> Robert







To UNSUBSCRIBE, or for general information on the ap-ug list

see groups.yahoo.com/group/ap-ug



Your use of Yahoo! Groups is subject to docs.yahoo.com/info/terms/



----------------------------

#7606 Oct 4, 2001

(Spoken in a conversational tone...)



Right, wrong, or otherwise, the performance as far as color correction is a

bit worse than an EDT design. I have one of each (TMB180 and 130EDT). :) It

just is. However you can pay $3000 USD more than the TMB180 costs and get a

brand spanking new TMB175 with a gorgeous OTA, and a 4 inch rotatable

focuser, and perfect color correction for $12,000. I have no doubt

whatsoever it's color correction will be as good or better than EDFS

designs. Which is to say a 7 inch APO that is color free. I simply could not

justify that. Indeed I got the TMB180 for _$5000_ less than the TMB175. And

of course $5000 less than that used 180EDT is going for.



I am happy I was able to do so. I have a 7.1 inch refractor. That _does_

attract a crowd. :) I had hoped the color correction would be near or the

same as the pre EDFS designs. That is to say the level of correction of the

EDTs of the early and mid nineties. That was not to be. It's okay. Just a

tad disappointing. The gas giants are here, I am very hopeful I'll get it

out in the next few weeks and find out what the 180's metal really is. Then

will come the cloudy nights review unless I can convince S&T they'd like to

publish it. Fat chance huh? :)



Clear skies,

Jeff



----------------------------

#7608 Oct 4, 2001

--- In ap-ug@y..., sqrlman@m... wrote: > Robert,

>

> That doesn't seem right. Why would an ED triplet design have the

> same level of color correction as a 15 year old pre ED triplet

design? >

> Steve

________________

Hi Steve,

Roland has just posted a new article that is relevant to your

question. You can find it at:



voltaire.csun.edu/roland/ed.html



To summarize: Roland points out that you can produce all kinds of

color correction levels, depending on the type of "ED" glass used and

the glass types that are mated with them.



Best,

Robert



----------------------------

#7610 Oct 4, 2001

I've had my TMB180 for 15 months, and if I had it all to do again,

I'd buy the scope again. There is not much (any?) competition for

that price/aperture/performance. If 180EDTs were selling for $7000

in 1999, I would not have given up my place on the AP wait list.



Tom DeMary



--- In ap-ug@y..., "Jeffrey D. Gortatowsky" jgortatows@a...> wrote:

> (Spoken in a conversational tone...)

>

> Right, wrong, or otherwise, the performance as far as color

correction is a

> bit worse than an EDT design. I have one of each (TMB180 and

130EDT). :) It

> just is. However you can pay $3000 USD more than the TMB180 costs

and get a

> brand spanking new TMB175 with a gorgeous OTA, and a 4 inch

rotatable

> focuser, and perfect color correction for $12,000. I have no doubt

> whatsoever it's color correction will be as good or better than EDFS

> designs. Which is to say a 7 inch APO that is color free. I simply

could not

> justify that. Indeed I got the TMB180 for _$5000_ less than the

TMB175. And

> of course $5000 less than that used 180EDT is going for.

>

> I am happy I was able to do so. I have a 7.1 inch refractor. That

_does_

> attract a crowd. :) I had hoped the color correction would be near

or the

> same as the pre EDFS designs. That is to say the level of correction

of the

> EDTs of the early and mid nineties. That was not to be. It's okay.

Just a

> tad disappointing. The gas giants are here, I am very hopeful I'll

get it

> out in the next few weeks and find out what the 180's metal really

is. Then

> will come the cloudy nights review unless I can convince S&T they'd

like to

> publish it. Fat chance huh? :)

>

> Clear skies,

> Jeff







----------------------------

#7618 Oct 4, 2001

Hi Steven,



Please send me your phone numbers via private e-mail (I had sent you

my work and home coordinates).



Clear Skies,

John

--- In ap-ug@y..., "steven hoffman" shoff@f...> wrote:

> The other gentleman is having his doubts...nows the

> time to jump in if you'd like.

>

>

>

> steve hoffman



----------------------------

#7619 Oct 5, 2001

we3 can go even deeper.



I know manufactors calling scopes SD , by checking we found they are simple

achromats, so maybe the SD means here " simple douplet" ????



Markus ----- Original Message -----

From: "Stewart Squires" ssquires@...>

To: ap-ug@yahoogroups.com>

Sent: Thursday, October 04, 2001 7:51 PM

Subject: [ap-ug] Re: ap 180edt





> ED can mean many things. The glass costs of high end ED lens sets can be

significant. Low end ED glass sets do not give the designer the

> ability to create high end ED optics performance.The designs themselves

and levels of spherical and chromatic corrections are all different

depending on

> the designer's intent. Level of effort in figuring can also vastly

affect performance. Meade's own ED designs are examples of marketing

> hooplah that bears little relationship to actual performance when compared

to 'the real thing'.

>

> Stew

>

> >>> sqrlman@... 10/04/01 10:51AM >>>

> Robert,

>

> That doesn't seem right. Why would an ED triplet design have the

> same level of color correction as a 15 year old pre ED triplet design?

>

> Steve

>

>

> --- In ap-ug@y..., "Robert Provin" postmaster@v...> wrote:

>

> > Hi Jeff,

> > It's my understanding (from what I remember in a communication from

> > Thomas Back) that the 180 EDStar is comparable in color correction

> to

> > the pre ED AP scopes (these were the 178 f/9 models).

> >

> > Robert

>

>

>

> To UNSUBSCRIBE, or for general information on the ap-ug list

> see groups.yahoo.com/group/ap-ug

>

> Your use of Yahoo! Groups is subject to docs.yahoo.com/info/terms/

>

>

>

>

>

> To UNSUBSCRIBE, or for general information on the ap-ug list

> see groups.yahoo.com/group/ap-ug

>

> Your use of Yahoo! Groups is subject to docs.yahoo.com/info/terms/

>

>



----------------------------

#7670 Oct 8, 2001

Be happy to oblige but I can't seem to get your whole email address

off the ap-ug site. Can you see mine? I can be reached at

sverba@... or sverba@......



sv





--- In ap-ug@y..., surpher@e... wrote:

> Hi Steven,

>

> Please send me your phone numbers via private e-mail (I had sent

you

> my work and home coordinates).

>

> Clear Skies,

> John

>

> --- In ap-ug@y..., "steven hoffman" shoff@f...> wrote:

> > The other gentleman is having his doubts...nows the

> > time to jump in if you'd like.

> >

> >

> >

> > steve hoffman



----------------------------

#7671 Oct 8, 2001

Could you guys please keep personal dealing off of the ap-ug? It's not of

any interest to the rest of us to read you personal stuff after the initial

offering has been placed on the ap-ug.



Just my own point of view,



Peter Natscher



sverba@... wrote:

> Be happy to oblige but I can't seem to get your whole email address

> off the ap-ug site. Can you see mine? I can be reached at

> sverba@... or sverba@......

>

> sv

>

> --- In ap-ug@y..., surpher@e... wrote:

> > Hi Steven,

> >

> > Please send me your phone numbers via private e-mail (I had sent

> you

> > my work and home coordinates).

> >

> > Clear Skies,

> > John

> >

> > --- In ap-ug@y..., "steven hoffman" shoff@f...> wrote:

> > > The other gentleman is having his doubts...nows the

> > > time to jump in if you'd like.

> > >

> > >

> > >

> > > steve hoffman

>

> To UNSUBSCRIBE, or for general information on the ap-ug list

> see groups.yahoo.com/group/ap-ug

>

> Your use of Yahoo! Groups is subject to docs.yahoo.com/info/terms/



----------------------------

#7675 Oct 9, 2001

Peter,



I have no desire to clutter this ug. However, I posted my comments to

Steven because I could not resolve his e-mail address using the Yahoo

group reader.



Best,

John





Peter Natscher wrote: > Could you guys please keep personal dealing off of the ap-ug? It's

not of

[snip]



----------------------------

#35932 May 24, 2007

Greetings AP user group,



I have recently been presented with an opportunity to acquire an AP-180 EDT (F/9). I note that comparing its older style 2.7" focuser, to my spare 2.7" focuser (from my AP-155 EDF) that it is about 1-2" shorter.



It does appear that I can attach the current/newer 2.7" focuser, but it is not clear if there is enough back focus. Does anyone have any experience of this combination and any problems that I might encounter? I contemplate using the AP 180 EDT equally for both visual and CCD usage.



Chris Ford







[Non-text portions of this message have been removed]







----------------------------

#35933 May 25, 2007

Chris,



AP offers focuser to tube adapters to compensate for length, if

necessary. I ordered spare part A1025-A that served my purposes.

For more information please follow the thread starting with msg # 29902

(Oct 2005). Hope that helps.



CS

Wolfgang





---------------



Von: ap-ug@yahoogroups.com [mailto:ap-ug@yahoogroups.com] Im Auftrag von

cford81@...

Gesendet: Freitag, 25. Mai 2007 04:39

An: ap-ug@yahoogroups.com; ap-ug@yahoogroups.com

Betreff: [ap-ug] AP-180EDT + Focuser question...







Greetings AP user group,



I have recently been presented with an opportunity to acquire an AP-180

EDT (F/9). I note that comparing its older style 2.7" focuser, to my

spare 2.7" focuser (from my AP-155 EDF) that it is about 1-2" shorter.



It does appear that I can attach the current/newer 2.7" focuser, but it

is not clear if there is enough back focus. Does anyone have any

experience of this combination and any problems that I might encounter?

I contemplate using the AP 180 EDT equally for both visual and CCD

usage.



Chris Ford



[Non-text portions of this message have been removed]













[Non-text portions of this message have been removed]



----------------------------

#35935 May 25, 2007

Hi Chris,



Please send a photo of your focuser to me so that we can advise you. The 180EDT should have had the same 2.7" focuser as the 155, however the 155 version had an adapter between the focuser and the part the was actually attached to the tube.



Address your e-mail to marj@----







Marj Christen

Astro-Physics, Inc

11250 Forest Hills Road

Machesney Park, IL 61115

Phone: 815-282-1513

Fax: 815-282-9847

www.astro-physics.com

Please include this e-mail with your response.



-----Original Message-----

From: ap-ug@yahoogroups.com [mailto:ap-ug@yahoogroups.com]On Behalf Of cford81@...

Sent: Thursday, May 24, 2007 9:39 PM

To: ap-ug@yahoogroups.com; ap-ug@yahoogroups.com

Subject: [ap-ug] AP-180EDT + Focuser question...







Greetings AP user group,



I have recently been presented with an opportunity to acquire an AP-180 EDT (F/9). I note that comparing its older style 2.7" focuser, to my spare 2.7" focuser (from my AP-155 EDF) that it is about 1-2" shorter.



It does appear that I can attach the current/newer 2.7" focuser, but it is not clear if there is enough back focus. Does anyone have any experience of this combination and any problems that I might encounter? I contemplate using the AP 180 EDT equally for both visual and CCD usage.



Chris Ford



[Non-text portions of this message have been removed]















[Non-text portions of this message have been removed]



----------------------------

#35936 May 25, 2007

In a message dated 5/24/2007 11:13:52 PM Central Daylight Time,

cford81@... writes:



> I have recently been presented with an opportunity to acquire an AP-180 EDT

> (F/9). I note that comparing its older style 2.7" focuser, to my spare 2.7"

> focuser (from my AP-155 EDF) that it is about 1-2" shorter.

>



The 2.7" focusers have always been the same length. I believe that you are

adding the additional length of the extension tube?



Roland





**************************************

See what's free at

www.aol.com





[Non-text portions of this message have been removed]



----------------------------

#35937 May 25, 2007

> > I have recently been presented with an opportunity to acquire an AP-180 EDT

> > (F/9). I note that comparing its older style 2.7" focuser, to my spare 2.7"

> > focuser (from my AP-155 EDF) that it is about 1-2" shorter.

> >

>

> The 2.7" focusers have always been the same length. I believe that you are

> adding the additional length of the extension tube?

>

> Roland

>



Hi Roland - I appreciate your assistance...



Ah ha - yes you are right. When I attached my new 4" focuser to the AP155 with those 6 bolts, the (now spare) 2.7" focuser + extension tube came out attached in one unit. I see the small screw which when unfastened permits the focuser itself to be unscrewed from the extension tube.



As I do not have the AP 180 EDT here to reference, would I just be able to unscrew the older (greased) 2.7" focuser and replace it with my newer 2.7" (greaseless/feathertouch) focuser when the AP155 extension tube has been removed? Or do I need a new adapter/extension tube?



Chris Ford







[Non-text portions of this message have been removed]



----------------------------

#35938 May 25, 2007

I believe Roland is referring to a drawtube extension tube, and you are

referring to the

4" ->2.7" focuser converter (for lack of a name) as seen in lower left on

the table:

www.pbase.com/mclemens1969/image/68879244



I think there are a couple lengths of that part in the wild, for example I

think

the 155/7 has a longer "converter" than the 180/9 did. ((And I see you are

talking

about a 180/9)). I believe this would make a 4" focuser upgrade on an 180/9

EDT eat up some in-focus, as compared to putting one on a 155/7



Mike







_____



From: ap-ug@yahoogroups.com [mailto:ap-ug@yahoogroups.com] On Behalf Of

cford81@...

Sent: Friday, May 25, 2007 9:03 AM

To: ap-ug@yahoogroups.com; ap-ug@yahoogroups.com

Cc: chris1011@...

Subject: Re: [ap-ug] AP-180EDT + Focuser question...





>

> > I have recently been presented with an opportunity to acquire an AP-180

EDT > > (F/9). I note that comparing its older style 2.7" focuser, to my spare

2.7" > > focuser (from my AP-155 EDF) that it is about 1-2" shorter.

> >

>

> The 2.7" focusers have always been the same length. I believe that you are



> adding the additional length of the extension tube?

>

> Roland

>



Hi Roland - I appreciate your assistance...



Ah ha - yes you are right. When I attached my new 4" focuser to the AP155

with those 6 bolts, the (now spare) 2.7" focuser + extension tube came out

attached in one unit. I see the small screw which when unfastened permits

the focuser itself to be unscrewed from the extension tube.



As I do not have the AP 180 EDT here to reference, would I just be able to

unscrew the older (greased) 2.7" focuser and replace it with my newer 2.7"

(greaseless/feathertouch) focuser when the AP155 extension tube has been

removed? Or do I need a new adapter/extension tube?



Chris Ford



[Non-text portions of this message have been removed]













[Non-text portions of this message have been removed]







----------------------------

#36413 Jul 5, 2007

I want to use the Traveler

and the AP 180 EDT interchangeabley

as guide scopes and imageing scopes.



What is the best way to couple them

on a Paramount.



The 180EDT is mounted to a losmandy plate

on AP rings and I am entirely satisfied with

that.



I'm worried about flexure and simplicity.



----------------------------

#36424 Jul 5, 2007

I use Losmandy adapters attached to the bottom of the rings (Parallax or

SoCal) of my Traveler so that I can slide the Traveler back and forth on the

Losmandy plate (on the AP180 rings). This way I can quickly tweak the

balance of the combo. I use this set up for imaging and never experience

flexure. However, note that the AP180 uses the AP "super" 24" ribbed plate

on the bottom and the heaviest duty Losmandy DC14 plate on top.



George



















_____



From: ap-ug@yahoogroups.com [mailto:ap-ug@yahoogroups.com] On Behalf Of

lawrence_d_lopez

Sent: Thursday, July 05, 2007 8:04 AM

To: ap-ug@yahoogroups.com

Subject: [SPAM] [ap-ug] how to mount a traveler on a AP 180EDT







I want to use the Traveler

and the AP 180 EDT interchangeabley

as guide scopes and imageing scopes.



What is the best way to couple them

on a Paramount.



The 180EDT is mounted to a losmandy plate

on AP rings and I am entirely satisfied with

that.



I'm worried about flexure and simplicity.











[Non-text portions of this message have been removed]



----------------------------

#36425 Jul 5, 2007

When I had an AP1200 I used the super 24" plate.

It was great.



But I'm on a paramount and have a Losmandy plate

mating with the paramount.



--- In ap-ug@yahoogroups.com, "George Whitney" gwhitney@...> wrote:

>

> I use Losmandy adapters attached to the bottom of the rings (Parallax or

> SoCal) of my Traveler so that I can slide the Traveler back and

forth on the

> Losmandy plate (on the AP180 rings). This way I can quickly tweak the

> balance of the combo. I use this set up for imaging and never experience

> flexure. However, note that the AP180 uses the AP "super" 24" ribbed

plate

> on the bottom and the heaviest duty Losmandy DC14 plate on top.

>

> George

>

>

>

>

>

>

>

>

>

> _____

>

> From: ap-ug@yahoogroups.com [mailto:ap-ug@yahoogroups.com] On Behalf Of

> lawrence_d_lopez

> Sent: Thursday, July 05, 2007 8:04 AM

> To: ap-ug@yahoogroups.com

> Subject: [SPAM] [ap-ug] how to mount a traveler on a AP 180EDT

>

>

>

> I want to use the Traveler

> and the AP 180 EDT interchangeabley

> as guide scopes and imageing scopes.

>

> What is the best way to couple them

> on a Paramount.

>

> The 180EDT is mounted to a losmandy plate

> on AP rings and I am entirely satisfied with

> that.

>

> I'm worried about flexure and simplicity.

>

>

>

>

>

> [Non-text portions of this message have been removed]

>



----------------------------

#36426 Jul 5, 2007

Using the heavy duty Losmandy DC14 plate on the bottom should provide the

rigidity needed, as it is .. thick.



George



















_____



From: ap-ug@yahoogroups.com [mailto:ap-ug@yahoogroups.com] On Behalf Of

lawrence_d_lopez

Sent: Thursday, July 05, 2007 4:51 PM

To: ap-ug@yahoogroups.com

Subject: [SPAM] Re: [SPAM] [ap-ug] how to mount a traveler on a AP 180EDT







When I had an AP1200 I used the super 24" plate.

It was great.



But I'm on a paramount and have a Losmandy plate

mating with the paramount.



--- In ap-ug@yahoogroups. mailto:ap-ug%40yahoogroups.com> com, "George

Whitney" gwhitney@...> wrote: >

> I use Losmandy adapters attached to the bottom of the rings (Parallax or

> SoCal) of my Traveler so that I can slide the Traveler back and

forth on the > Losmandy plate (on the AP180 rings). This way I can quickly tweak the

> balance of the combo. I use this set up for imaging and never experience

> flexure. However, note that the AP180 uses the AP "super" 24" ribbed

plate > on the bottom and the heaviest duty Losmandy DC14 plate on top.

>

> George

>

>

>

>

>

>

>

>

>

> _____

>

> From: ap-ug@yahoogroups. mailto:ap-ug%40yahoogroups.com> com

[mailto:ap-ug@yahoogroups. mailto:ap-ug%40yahoogroups.com> com] On Behalf

Of > lawrence_d_lopez

> Sent: Thursday, July 05, 2007 8:04 AM

> To: ap-ug@yahoogroups. mailto:ap-ug%40yahoogroups.com> com

> Subject: [SPAM] [ap-ug] how to mount a traveler on a AP 180EDT

>

>

>

> I want to use the Traveler

> and the AP 180 EDT interchangeabley

> as guide scopes and imageing scopes.

>

> What is the best way to couple them

> on a Paramount.

>

> The 180EDT is mounted to a losmandy plate

> on AP rings and I am entirely satisfied with

> that.

>

> I'm worried about flexure and simplicity.

>

>

>

>

>

> [Non-text portions of this message have been removed]

>











[Non-text portions of this message have been removed]







Contact Us
This Site's Privacy Policy
Google's privacy policies

S
e
n
i
o
r
T
u
b
e
.
o
r
g