Re: [MaxImDL] Questions / Suggestions


Nov 10, 2001

 


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

#498 Nov 10, 2001

Doug,

I've been experimenting with the Version 3 Demo, and I will probably

order the upgrade next week. My primary interests (at this time) are

Planetary imaging & autoguiding film exposures. The program seems to

do exactly what I want except for 2 things. This would put it far

ahead of the other programs I am currently using.



My first question has to do with autodarks when doing LRGB sequences.

I like the idea of taking my images in LRGBLRGBLRGB... etc. sequence.

I have had situations where I shot all of my L's then all of my R's,

etc. where I end up with a number of great green images all in a row

(for example) that suggests that the seeing may have improved for a

couple of minutes. If I shoot LRGBLRGB... etc. I figure I have a

better chance of getting a good image in each channel, while I don't

think it decreases my chance of getting multiple good images in each

channel. Also I think I have a better chance of getting a good number

of shots in a shorter period of time to reduce rotation of Jupiter

and Mars. If I shoot all of my L's, then all of my R's, etc. I have

to figure out ahead of time how many total images I can shoot in 10

minutes. Doing it my way I can take as many images as I want then use

the file timestamps to determine which images can be combined later.

The problem is that doing it my way I take a new autodark each time

the filter changes. This drastically reduces the number of images I

can grab in 10 minutes. What would be great is if the program could

automatically re-use the first dark in each channel for each

consecutive image in that channel provided that the temperature

remains constant. If that's not possible, is there a way to create a

dark library at the beginning of each imaging session? I really would

prefer the first idea.



My second question has to do with the cooler info display. When

certain tabs are selected (like sequence) the cooler info is hidden.

Maybe I'm just holding onto old habits but I really get uncomfortable

when I don't see this info. I'm used to always monitoring my cooler

percentage so I can keep it around 90%. During a normal imaging

session I would never leave the sequence tab (once I'm set-up) unless

this percentage changes. Any way this info could be displayed in the

status bar, or a seperate box?



Other than those 2 items I'm very impressed. Nice job!



Dave Finch



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

#500 Nov 10, 2001

Dave Finch wrote: >

> My first question has to do with autodarks when doing LRGB sequences.



To be completely honest, I don't recommend the use of auto-darks under any

circumstances. You are far better off taking a number of darks and median

combining them; i.e. use the "full calibration" features of MaxIm DL.



You have two options:



1. Take a series of darks for each exposure time. Calibrate after you have

finished imaging.



2. Take a set of bias frames and dark frames. Enter both in the Set

Calibration command, and use the Auto Scale option to scale the dark frames.



The second option would probably be the most efficient in your situation.

> My second question has to do with the cooler info display. When

> certain tabs are selected (like sequence) the cooler info is hidden.

> Maybe I'm just holding onto old habits but I really get uncomfortable

> when I don't see this info. I'm used to always monitoring my cooler

> percentage so I can keep it around 90%. During a normal imaging

> session I would never leave the sequence tab (once I'm set-up) unless

> this percentage changes. Any way this info could be displayed in the

> status bar, or a seperate box?



Well, one idea we had was to add a special floating information display for

camera and autoguider status. It's still on the ideas list, and we'll probably

do that at some point in the future.

> Other than those 2 items I'm very impressed. Nice job!



Thanks!



Doug



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



Doug George

dgeorge@...



Diffraction Limited

Makers of Cyanogen Imaging Products

www.cyanogen.com



100 Craig Henry Drive, Unit 106,

Ottawa, Ontario, Canada, K2G 5W3



Phone: (613) 225-2732

Fax: (613) 225-9688



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



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

#510 Nov 11, 2001

Doug,

Thanks for the suggestions. I'll try them out. Actually I'm not sure

if I need to subtract darks from these short exposures. I did some

experimenting with this before and I couldn't decide. I'll have to do

some more comparing. Now I'm just working on my wife for the $100.

Thanks,

Dave Finch



--- In MaxImDL@y..., "Douglas B. George" dgeorge@c...> wrote:

> Dave Finch wrote:

> >

> > My first question has to do with autodarks when doing LRGB

sequences.

>

> To be completely honest, I don't recommend the use of auto-darks

under any

> circumstances. You are far better off taking a number of darks and

median

> combining them; i.e. use the "full calibration" features of MaxIm

DL.

>

> You have two options:

>

> 1. Take a series of darks for each exposure time. Calibrate after

you have

> finished imaging.

>

> 2. Take a set of bias frames and dark frames. Enter both in the

Set

> Calibration command, and use the Auto Scale option to scale the

dark frames.

>

> The second option would probably be the most efficient in your

situation.

>

> > My second question has to do with the cooler info display. When

> > certain tabs are selected (like sequence) the cooler info is

hidden.

> > Maybe I'm just holding onto old habits but I really get

uncomfortable

> > when I don't see this info. I'm used to always monitoring my

cooler

> > percentage so I can keep it around 90%. During a normal imaging

> > session I would never leave the sequence tab (once I'm set-up)

unless

> > this percentage changes. Any way this info could be displayed in

the

> > status bar, or a seperate box?

>

> Well, one idea we had was to add a special floating information

display for

> camera and autoguider status. It's still on the ideas list, and

we'll probably

> do that at some point in the future.

>

> > Other than those 2 items I'm very impressed. Nice job!

>

> Thanks!

>

> Doug

>

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

>

> Doug George

> dgeorge@c...

>

> Diffraction Limited

> Makers of Cyanogen Imaging Products

> www.cyanogen.com

>

> 100 Craig Henry Drive, Unit 106,

> Ottawa, Ontario, Canada, K2G 5W3

>

> Phone: (613) 225-2732

> Fax: (613) 225-9688

>

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







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

#511 Nov 11, 2001

Hi Doug......



Can you tell me the situation regarding the Dream Machine from FLI. They

now have a guiding port and I would like to use an STV to guide it, all

from MaximDL hopefully. The problem is that the guiding port is behind

the shutter, so the STV and FLI need to act in harmony a la SBIG guiding

camera's. Does MaximDL support this combination?



Adrian

Adrian Catterall, CCD astronomer

email: Catterall@...

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

Guilden Morden

Hertfordshire

U.K.



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

#513 Nov 11, 2001

Adrian Catterall wrote: >

> Can you tell me the situation regarding the Dream Machine from FLI. They

> now have a guiding port and I would like to use an STV to guide it, all

> from MaximDL hopefully. The problem is that the guiding port is behind

> the shutter, so the STV and FLI need to act in harmony a la SBIG guiding

> camera's. Does MaximDL support this combination?



The Version 3 FLI plug-in driver has a mode where it will hold the shutter open

between exposures.



Doug



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



Doug George

dgeorge@...



Diffraction Limited

Makers of Cyanogen Imaging Products

www.cyanogen.com



100 Craig Henry Drive, Unit 106,

Ottawa, Ontario, Canada, K2G 5W3



Phone: (613) 225-2732

Fax: (613) 225-9688



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



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

#515 Nov 11, 2001

In message 3BEEF126.944C7D76@...>, Douglas B. George

dgeorge@...> writes > Adrian Catterall wrote:

> >

> > Can you tell me the situation regarding the Dream Machine from

> FLI. They

> > now have a guiding port and I would like to use an STV to guide

> it, all

> > from MaximDL hopefully. The problem is that the guiding port is

> behind

> > the shutter, so the STV and FLI need to act in harmony a la SBIG

> guiding

> > camera's. Does MaximDL support this combination?

>

> The Version 3 FLI plug-in driver has a mode where it will hold the

> shutter open

> between exposures.

>

> Doug



Sounds good! How about control of the STV?

I haven't entertained an upgrade just yet, as I am waiting for your many

early orders to get out, but as I live in the UK, do I upgrade through

you or via Nick Hudson at true Technology?



Adrian



>

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

>

> Doug George

> dgeorge@...

>

> Diffraction Limited

> Makers of Cyanogen Imaging Products

> www.cyanogen.com

>

> 100 Craig Henry Drive, Unit 106,

> Ottawa, Ontario, Canada, K2G 5W3

>

> Phone:... (613) 225-2732

> Fax:..... (613) 225-9688

>

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

>

> To unsubscribe from this group, send an email to:

> MaxImDL-unsubscribe@yahoogroups.com

>

>

>

> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service

> .



Adrian Catterall, CCD astronomer

email: Catterall@...

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

Guilden Morden

Hertfordshire

U.K.



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

#516 Nov 11, 2001

Adrian Catterall wrote:

> Sounds good! How about control of the STV?



We'll be adding STV control next time we get an STV in house. We weren't sure

whether we would do this for a while. The STV serial command interface really

wasn't intended for this sort of operation; it works by pressing keys on the

front panel remotely. That makes it a bit difficult to build a robust driver!

> I haven't entertained an upgrade just yet, as I am waiting for your many

> early orders to get out, but as I live in the UK, do I upgrade through

> you or via Nick Hudson at true Technology?



You can order direct.



Doug



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



Doug George

dgeorge@...



Diffraction Limited

Makers of Cyanogen Imaging Products

www.cyanogen.com



100 Craig Henry Drive, Unit 106,

Ottawa, Ontario, Canada, K2G 5W3



Phone: (613) 225-2732

Fax: (613) 225-9688



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



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

#517 Nov 11, 2001

Thanks for the information, I'll order in the next few days..



Adrian



In message 3BEEF4E2.B3DA8916@...>, Douglas B. George

dgeorge@...> writes > Adrian Catterall wrote:

>

> > Sounds good! How about control of the STV?

>

> We'll be adding STV control next time we get an STV in house.. We

> weren't sure

> whether we would do this for a while.. The STV serial command

> interface really

> wasn't intended for this sort of operation; it works by pressing

> keys on the

> front panel remotely.. That makes it a bit difficult to build a

> robust driver!.

>

> > I haven't entertained an upgrade just yet, as I am waiting for

> your many

> > early orders to get out, but as I live in the UK, do I upgrade

> through

> > you or via Nick Hudson at true Technology?

>

> You can order direct.

>

> Doug

>

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

>

> Doug George

> dgeorge@...

>

> Diffraction Limited

> Makers of Cyanogen Imaging Products

> www.cyanogen.com

>

> 100 Craig Henry Drive, Unit 106,

> Ottawa, Ontario, Canada, K2G 5W3

>

> Phone:... (613) 225-2732

> Fax:..... (613) 225-9688

>

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

>

> Yahoo! Groups Sponsor ADVERTISEMENT

> us.adserver.yahoo.com/l?M=213858.1727639.3250013.1261774/D=egroupmail/S=1705082806:HM/A=763352/rand=229658999

> To unsubscribe from this group, send an email to:

> MaxImDL-unsubscribe@yahoogroups.com

>

>

>

> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service

> .



Adrian Catterall, CCD astronomer

email: Catterall@...

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

Guilden Morden

Hertfordshire

U.K.







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

#2655 Jun 21, 2002

I know his thread is a little old, but did we ever get STV control

from MaximDLCCD ?



Andrew

--- In MaxImDL@y..., "Douglas B. George" dgeorge@c...> wrote:

> Adrian Catterall wrote:

>

> > Sounds good! How about control of the STV?

>

> We'll be adding STV control next time we get an STV in house. We

weren't sure

> whether we would do this for a while. The STV serial command

interface really

> wasn't intended for this sort of operation; it works by pressing

keys on the

> front panel remotely. That makes it a bit difficult to build a

robust driver!

>

> > I haven't entertained an upgrade just yet, as I am waiting for

your many

> > early orders to get out, but as I live in the UK, do I upgrade

through

> > you or via Nick Hudson at true Technology?

>

> You can order direct.

>

> Doug

>

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

>

> Doug George

> dgeorge@c...

>

> Diffraction Limited

> Makers of Cyanogen Imaging Products

> www.cyanogen.com

>

> 100 Craig Henry Drive, Unit 106,

> Ottawa, Ontario, Canada, K2G 5W3

>

> Phone: (613) 225-2732

> Fax: (613) 225-9688

>

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



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

#2656 Jun 21, 2002

andrewjhk wrote: >

> I know his thread is a little old, but did we ever get STV control

> from MaximDLCCD ?



We haven't had an STV go through here in a while, so not yet. We might be able

to borrow one; I'll check around.



Doug



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



Doug George

dgeorge@...



Diffraction Limited

Makers of Cyanogen Imaging Products

www.cyanogen.com



100 Craig Henry Drive, Unit 106,

Ottawa, Ontario, Canada, K2G 5W3



Phone: (613) 225-2732

Fax: (613) 225-9688



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



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

#2736 Jun 27, 2002

Doug,



1) Why does doing a combine and save via a script give a different

header than doing it directly in MaxIm? It gives you the extra

BACKGRND and RANGE keywords.



2) Why do you get an extra BSCALE and BZERO keyword every time you

save a file? To emphasize the issue I opened and saved the same file

5 times and ended up with 5 extra sets of "*BSCALE" and "*BZERO"

keywords.



3) Could you add a document method so the Stretch could be commanded

to the same presets as the Stretch dialog, such

as "Low", "Medium", "High", etc. ?



Gil



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

#2751 Jun 28, 2002

azgilrock wrote: >

> 1) Why does doing a combine and save via a script give a different

> header than doing it directly in MaxIm? It gives you the extra

> BACKGRND and RANGE keywords.



BACKGRND and RANGE are set if the image is showing in manual stretch mode. It's

possible that if you created a blank document first, that it would be in manual

stretch mode instead of medium stretch.

> 2) Why do you get an extra BSCALE and BZERO keyword every time you

> save a file? To emphasize the issue I opened and saved the same file

> 5 times and ended up with 5 extra sets of "*BSCALE" and "*BZERO"

> keywords.



The FITS I/O package tries not to remove old information from the header; it

comments it out.

> 3) Could you add a document method so the Stretch could be commanded

> to the same presets as the Stretch dialog, such

> as "Low", "Medium", "High", etc. ?



It's been suggested and is on the list.



Doug



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



Doug George

dgeorge@...



Diffraction Limited

Makers of Cyanogen Imaging Products

www.cyanogen.com



100 Craig Henry Drive, Unit 106,

Ottawa, Ontario, Canada, K2G 5W3



Phone: (613) 225-2732

Fax: (613) 225-9688



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



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

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