Editing Common Imaging Issues (section)

===== Star Reduction =====
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* [http://i.imgur.com/Ei7rvjr.jpg Image with flawed/excessive star reduction] - Do not apply star reduction routines to non-star areas like nebulas or the background. The symptom of star-reduction applied to non-point sources is the strange filament-like or lacy look of the nebula. Also, over-reduction can eliminate all the faint stars and, if they are in front of nebulosity, it will look very bad. Fix: If you feel you absolutely must use star reduction, go very easy on it and use a mask which only lets the stars be affected.