Re: APCC Pro model details #APCC


Ray Gralak
 

Hi Eric,

It would be really nice if the documentation stated what "good" and "bad" values were based on your mount and
scope, and more importantly, what, if anything should be done to improve the numbers.
A simple example: running a T-Point model tells you your polar alignment error and says things like "Turn the
right knob 3 ticks" or "your error is good enough". However, for the other numbers it's no better than APPM in that
it also leaves you guessing regarding what, if anything should be done.
There aren't specific good or bad values. The model adjusts pointing and tracking to correct the polar alignment and other errors. What you should is more important is model repeatability, which can be improved by reducing random movements that your telescope and other equipment may introduce. There are so many different telescope and camera types out there that it would be difficult to provide more specific information than that.

BTW, adjusting polar alignment will not necessarily improve pointing or tracking. It will, however, reduce field rotation, but that mostly matters when alignment is far off. The amount each knob adjusts polar alignment can be found in APCC's help file:

https://www.apastrosoftware.com/help/apcc-pro/advanced_pointing_model.htm

-Ray

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