Re: Interactions Between Keypad and APCC Orthogonality Models? #APCC #Mach2GTO #Keypad


Roland Christen
 


You should not simultaneously use an APCC model with the keypad model, as they do not know about each other!
You can use them but only if you first create the keypad ortho model and load it into the CP4/5. Once that is done, it will simply make pointing for external models easier.

What you should not do is to create a keypad ortho model after making an APCC model, since that will negate the one in APCC.

Roland


-----Original Message-----
From: Ray Gralak <iogroups@...>
To: main@ap-gto.groups.io
Sent: Tue, Sep 14, 2021 10:52 pm
Subject: Re: [ap-gto] Interactions Between Keypad and APCC Orthogonality Models? #Mach2GTO #APCC #Keypad

Hi John,

>    I am looking for some clarifications regarding the interactions / interoperability of the Ortho Model
> performed by the Keypad versus the pointing model created by APCC? The questions I want to understand
> are:

You should not simultaneously use an APCC model with the keypad model, as they do not know about each other!

-Ray

> -----Original Message-----
> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of John Upton
> Sent: Tuesday, September 14, 2021 7:56 PM
> To: main@ap-gto.groups.io
> Subject: [ap-gto] Interactions Between Keypad and APCC Orthogonality Models? #Mach2GTO #APCC
> #Keypad
>
> Hi all,
>
>    I am looking for some clarifications regarding the interactions / interoperability of the Ortho Model
> performed by the Keypad versus the pointing model created by APCC? The questions I want to understand
> are:
>
>
>
> 1.    I assume the APCC model takes precedence when a Keypad Ortho Model has been built. Is that
> correct?
>
>
> 2.    Does the APCC model erase the results of the Keypad Ortho Model or simply override it?
>
>
> 3.    If the APCC pointing corrections are turned off, does the most recent Keypad Ortho Model once again
> take effect or does a new one need to be built?
>
>    For some observing and simple single object imaging sessions, I think I would like to just have the
> orthogonality error corrected without creating / running a normal pointing model. It would simplify / speed up
> plate solving on both sides of the meridian. Ideally, for a quick portable imaging session, I would prefer not to
> have to rerun the Keypad Ortho Model at the beginning of each session when I don't want to run APPM. I will
> be guiding for these sessions and since they involve only a single target, plate solving will suffice for the
> evening's only target.
>
>
> John
>







--
Roland Christen
Astro-Physics

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