Re: Eggy Stars with Polar Axis Correction


Ray Gralak
 

I wonder how pinpoint does this.

Since this distortion is scope specific does it have a scope model database of some sort? And then the user has to
specify which one he is using?
I don't know how Pinpoint does it either, but it is obvious how it could be done dynamically without a model.

The reference is the star catalog that is being used. Once the app finds the approximate center RA/Dec, it could build a map of the distortion by looking at the error between each star's position in the image versus its expected position given its coordinates in the catalog. The display of this error map would be the image's distortion.

-Ray

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