[APML] Success in using RegiStar to eliminate scratches

["Kevin Wigell" <kwemail@twcny.rr.com>]

I tried Mike Cook's suggestion for getting rid of the scratches in my two
frames of M57. Mike suggested using the "min" combine function in RegiStar
(for scratches lighter than the sky background), since the min function
would preferentially select the darker sky background pixels over the
lighter scratch pixels. This worked very well. I found no need to do any
manual removal of scratches after doing a "min" combine in RegiStar.

The results of my experiment are here:
http://home.twcny.rr.com/kevinwigell/M57_MVAS.htm

Click on the link in the description to the right of the image to see what
it would have looked like using the "average" combine function. I think the
difference is obvious.

Thanks to all who gave me suggestions on this.

Kevin Wigell
http://home.twcny.rr.com/kevinwigell/index.html


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