Quote:
Originally Posted by Somnium
do you guys do anything to really dial in the stars to a pinpoint? or do they come out well after stacking subs and compiling the LRGB image.
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Pinpoint stars are more an equipment plus seeing issue. Better tracking, better sharper focusing, refocusing with temp shifts and using scopes that don't shift focus with temp change so much. Accurate tracking, using an AO all add up to shaper stars.
I read one post where a faster scope can make sharper stars. Not oversampling can lead to sharper stars.
Cameras with small wells with overexposed stars can make stars fatter especially if not protected with masks during stretching and colour enhancement processing.
Star reduction techniques do exist though. Star tools is one of them. I think Morphological transformation in PixInsight is another. Selecting bright stars and then reducing them with curves is another. Avoid the minimum filter that is a star and image wrecker.
Liquify tool in PS for bight stars with it set to pucker and hit the bright stars a couple of times reduces the large ones.
There is also the unscientific technique of clone stamping out a troublesome star.
Greg.