Re: APCC pro refraction modeling for nomad setup #APCC #Mach2GTO


Dale Ghent
 

On May 12, 2021, at 09:30, Ray Gralak <iogroups@siriusimaging.com> wrote:

That said, you would get more accurate tracking with a model. The model will compensate for polar alignment error, flexure, and orthogonality errors. Typically APPM can run through 2-3 points per minute which would allow you to create a 60 point model in less than 30 minutes.
To add to Ray's comment, you can do the modeling run during twilight, usually during nautical dusk. Plate solving doesn't require anything in the way of fidelity; only that a sufficient number of stars can be detected. Doing it then will avoid stepping on your actual imaging time which, I presume, would start during astronomical dusk at the earliest.

/dale

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