1. posterid:203874
  2. APPC + Pointing Model Question

Re: APPC + Pointing Model Question

cford81@...
 

Hi Ray,

Thanks for your speedy response. Yes, I performed a Pointing Model after the RECAL with the hand controller. I know I can do a plate solve and RECAL in APPM so another way would be to center on M13 with the Hand controller then do a Plate Solve and RCAL in APPM before starting the run? (I am using SGPro)

Seems though that Verify will update the pointing model if it finds the initial 260 point run is incorrect? I have not done one yet as I thought it was optional only.

Chris


From: "'Ray Gralak (Groups)' groups3@... [ap-gto]"
To: ap-gto@...
Sent: Sunday, July 23, 2017 2:35:48 PM
Subject: RE: [ap-gto] APPC + Pointing Model Question

 

Hi Chris,

Ooops.. I reread what you wrote and maybe I misunderstood.

Did you perform a pointing model after the RECAL with the handcontroller?

If so, you should verify the model by rerunning APPM again with Verify enabled. You can use a smaller subset of stars, say 30-34 (you don't need to do all 20)

Best regards,

-Ray Gralak
Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc
Author of PEMPro: http://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: http://www.gralak.com/apdriver
Author of PulseGuide: http://www.pulseguide.com
Author of Sigma: http://www.gralak.com/sigma

> -----Original Message-----
> From: ap-gto@... [mailto:ap-gto@...]
> Sent: Sunday, July 23, 2017 2:31 PM
> To: ap-gto@...
> Subject: RE: [ap-gto] APPC + Pointing Model Question
>
>
>
> Hi Chris,
>
> APCC expects the coordinates to be provided in the pointing model coordinate system but the coordinates of
> the hand controller are not aware of APCC's pointing model.
>
> APPM has a plate solve and recal function that you should use to sync into the pointing model.
>
> -Ray Gralak
> Author of APCC (Astro-Physics Command Center): http://www.astro-
> physics.com/index.htm?products/accessories/software/apcc/apcc
> Author of PEMPro: http://www.ccdware.com
> Author of Astro-Physics V2 ASCOM Driver: http://www.gralak.com/apdriver
> Author of PulseGuide: http://www.pulseguide.com
> Author of Sigma: http://www.gralak.com/sigma
>
> > -----Original Message-----
> > From: ap-gto@... [mailto:ap-gto@...]
> > Sent: Sunday, July 23, 2017 2:21 PM
> > To: ap-gto@...
> > Subject: [ap-gto] APPC + Pointing Model Question
> >
> >
> >
> > This is hopefully a question with a simple answer but I can't quite figure out what is happening.
> >
> > (1) My mount is an AP1600GTO permanently mounted in my observatory and accurately polar aligned
> >
> > (2) I do a RECAL on Arcturus or other obvious star. Using the hand controller I do a quick test slew to M13 to
> > check everything is pointing correctly.
> >
> > (3) I run APPM and build a 260 point model. It works fine. Every sample point plate solves correctly. I
> transfer
> > the model into APCC.
> >
> > (4) I slew to M13 and my (2,400mm) telescope is not pointing to that object correctly. Rather M13 is just off
> the
> > image.
> >
> > I think what is happening is that when the APPM begins it's run, it first points to the zenith and does a plate
> > solve and RECAL which is different to my original. There is some order of operations I am likely not doing
> > correctly. Ideas?
> >
> > Chris
> >
> >
> >
>
>
>
>


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