Re: [MaxImDL] Question about Pier Flip


Jan 11, 2010

 


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

#39473 Jan 11, 2010

Hi,



I hope that this isn't buried somewhere in the documentation, but on a couple of occasions I've been guiding on an object using MaximDL 5 with an SBIG ST-237 connected to the guider relays on my Gemini G11 mount. I'm using the Sky 6 as my telescope interface. Sky6 is using its built-in driver for the Losmandy Gemini mount. As the target crosses the meridian, the scope will keep tracking until it reaches the soft limit and then stops and sounds an alarm. The scope does not perform a pier flip even though I have the check boxes checked in at least two different places in MaximDL.



What is the correct procedure to get the scope to do a pier flip and reacquire tracking?



Thanks,



-Jim



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

#39474 Jan 11, 2010

Jim,



To accomplish what you're trying to do, you'll need software like ACP. The settings for pier flip in MaxIm are just to tell it how to interpret the current orientation of an image so it knows which way to move for centering or guiding.



-Joe

--- In MaxImDL@yahoogroups.com, "Jim McKay" astroguy67@...> wrote:

>

> Hi,

>

> I hope that this isn't buried somewhere in the documentation, but on a couple of occasions I've been guiding on an object using MaximDL 5 with an SBIG ST-237 connected to the guider relays on my Gemini G11 mount. I'm using the Sky 6 as my telescope interface. Sky6 is using its built-in driver for the Losmandy Gemini mount. As the target crosses the meridian, the scope will keep tracking until it reaches the soft limit and then stops and sounds an alarm. The scope does not perform a pier flip even though I have the check boxes checked in at least two different places in MaximDL.

>

> What is the correct procedure to get the scope to do a pier flip and reacquire tracking?

>

> Thanks,

>

> -Jim

>



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

#39486 Jan 12, 2010

Joe,



Thanks, at least I won't have to drive myself crazy thinking that I'm overlooking some obscure setting in MaximDL. I'll pursue a different solution.



-Jim

--- In MaxImDL@yahoogroups.com, "Joe Ulowetz" joe.ulowetz@...> wrote:

>

> Jim,

>

> To accomplish what you're trying to do, you'll need software like ACP. The settings for pier flip in MaxIm are just to tell it how to interpret the current orientation of an image so it knows which way to move for centering or guiding.

>

> -Joe

>

> --- In MaxImDL@yahoogroups.com, "Jim McKay" astroguy67@> wrote:

> >

> > Hi,

> >

> > I hope that this isn't buried somewhere in the documentation, but on a couple of occasions I've been guiding on an object using MaximDL 5 with an SBIG ST-237 connected to the guider relays on my Gemini G11 mount. I'm using the Sky 6 as my telescope interface. Sky6 is using its built-in driver for the Losmandy Gemini mount. As the target crosses the meridian, the scope will keep tracking until it reaches the soft limit and then stops and sounds an alarm. The scope does not perform a pier flip even though I have the check boxes checked in at least two different places in MaximDL.

> >

> > What is the correct procedure to get the scope to do a pier flip and reacquire tracking?

> >

> > Thanks,

> >

> > -Jim

> >

>



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

#39502 Jan 13, 2010

> To accomplish what you're trying to do, you'll need software like ACP.



If ACP can do it, why can't a script be generated to do it exclusively in Maxim?? What I was considering is setting a script to execute at a specific time...that time deterimined by the user at setup and corresponding to the time at which meridian flip is needed.



Sean



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

#39514 Jan 14, 2010

Sean,



Sure, a script can be written to do what you're suggesting; I've done that myself (more in a moment). But first realize what is involved: stop the current exposure (or wait until the current exposure completes), then issue the pier flip command, then (unless you have a really good mount or are imaging at a very short focal length) you need to reacquire your target and re-center it (which involves using software to "plate-solve" an image), and then resume imaging.



I've written a script that does that, plus other features for automated imaging; it's 7500 lines of Python code (so far). I have lots of fun using it (especially while I sleep so I can image all night every night). If you're interested, the software is available with an article I wrote about it:

www.astrophotoinsight.com/content/automation-budget-part-3-operation



The "easy" way is to use a product like ACP, but for people who like to write their own software (and save a little money) it is entirely possible to write your own script to do this.



-Joe



--- In MaxImDL@yahoogroups.com, "buhligs" buhlig@...> wrote:

>

> > > To accomplish what you're trying to do, you'll need software like ACP.

>

> If ACP can do it, why can't a script be generated to do it exclusively in Maxim?? What I was considering is setting a script to execute at a specific time...that time deterimined by the user at setup and corresponding to the time at which meridian flip is needed.

>

> Sean

>



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

#39529 Jan 14, 2010

--- In MaxImDL@yahoogroups.com, "Joe Ulowetz" joe.ulowetz@...> wrote: >

> Sean,

>>

> I've written a script that does that, plus other features for automated imaging; it's 7500 lines of Python code (so far). I have lots of fun using it (especially while I sleep so I can image all night every night).



Joe,



I breezed through the article but had a hard time finding specifics on the how the meridian flip is handled..is it buried in the code? Notionally it is as you describe, stop imaging, re-command mount (will flip on it's own, CGE), plate solve, synch mount, re-command, image. I'm really only interested in a single target right now. Also, do you think PinPointLE as part of the MaximDL Pro suite is sufficient to handle the plate solve? I was looking to use VB for my code. If you have some sample code with calls to Maxim Objects and handles that would be useful.



Sean







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

#39535 Jan 15, 2010

Sean,



The 2nd article in my series deals more with how the software works. In case that wasn't obvious, here are links to all 3 articles:

www.astrophotoinsight.com/content/automation-budget-part-1-hardware

www.astrophotoinsight.com/content/automation-budget-part-2-software

www.astrophotoinsight.com/content/automation-budget-part-3-operation



The code that checks to see if a pier flip is necessary is TestForMeridianLimit, and the code that does the actual flip is execMeridianFlip



You won't be able to write a script to control PinpointLE; you need the full version of Pinpoint to be able to script it.



I have some sample code (in Python) posted in the Files section of this forum that shows how to call different software such as MaxIm. The file is called ExerciseCOM.py.txt



I'm not much of a VB coder, but here are some examples of VB code to connect to MaxIm components.

Set Doc = CreateObject("MaxIm.Document")

set App = CreateObject("MaxIm.Application")

Set Camera = CreateObject( "MaxIm.CCDCamera" )



-Joe

--- In MaxImDL@yahoogroups.com, "buhligs" buhlig@...> wrote:

> I breezed through the article but had a hard time finding specifics on the how the meridian flip is handled..is it buried in the code? Notionally it is as you describe, stop imaging, re-command mount (will flip on it's own, CGE), plate solve, synch mount, re-command, image. I'm really only interested in a single target right now. Also, do you think PinPointLE as part of the MaximDL Pro suite is sufficient to handle the plate solve? I was looking to use VB for my code. If you have some sample code with calls to Maxim Objects and handles that would be useful.

>

> Sean

>



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

#48439 Feb 12 12:07 PM

Hi



Can Maxim be programmed so that it can automatically do the meridian flip of a GEM mount?



Best regards



Alfredo



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

#48482 Feb 15 3:51 PM

On 2012-02-12 3:07 PM, Alfredo Beltr.n wrote: > Hi

>

> Can Maxim be programmed so that it can automatically do the meridian flip of a GEM mount?



No, but this is in the works.



Doug



--



Doug George

dgeorge@...



Diffraction Limited

Makers of Cyanogen Imaging Products

www.cyanogen.com/



100 Craig Henry Dr., Suite 202

Ottawa, Ontario,

Canada, K2G 5W3



Phone: (613) 225-2732

Fax: (613) 225-9688



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

#48488 Feb 15 6:00 PM

That would be a very nice thing to have. Do you think it will be available on one of the next releases?







El 15/02/2012, a las 18:51, "Douglas B. George" dg@...> escribi.:

> On 2012-02-12 3:07 PM, Alfredo Beltr.n wrote:

> > Hi

> >

> > Can Maxim be programmed so that it can automatically do the meridian flip of a GEM mount?

>

> No, but this is in the works.

>

> Doug

>

> --

>

> Doug George

> dgeorge@...

>

> Diffraction Limited

> Makers of Cyanogen Imaging Products

> www.cyanogen.com/

>

> 100 Craig Henry Dr., Suite 202

> Ottawa, Ontario,

> Canada, K2G 5W3

>

> Phone: (613) 225-2732

> Fax: (613) 225-9688

>





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



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

#48489 Feb 15 6:50 PM

On 2012-02-15 9:00 PM, Alfredo Beltr.n wrote: > That would be a very nice thing to have. Do you think it will be available on

> one of the next releases?



Sorry, it's not going to be available for a while.



Doug



--



Doug George

dgeorge@...



Diffraction Limited

Makers of Cyanogen Imaging Products

www.cyanogen.com/



100 Craig Henry Dr., Suite 202

Ottawa, Ontario,

Canada, K2G 5W3



Phone: (613) 225-2732

Fax: (613) 225-9688



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