Quote:
Originally Posted by rat156
Hi Doug,
Yes, the nebula looks great, but the stars are causing you some trouble.
Try selecting the bright stars in PS using the colour range tool (on your Luminance sub). Once you have the really bright ones selected, expand the selection (3-5 pixels, depends on the resolution of the shot, I used 3 for the Rosette I took with the ED80, but usually use 5 for the stuff with the RC), then feather the selection by 1-3 pixels (depends on the amount you expanded). The go to the filters->minimum, select 1 or two pixels, I have a tendency to use two, it looks bad, but don't worry, go to edit -> fade minimum and adjust the slider to taste. Be aware that the ability to fade a filter is only available until you perform another operation.
That should fix those pesky bloated stars.
Cheers
Stuart
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Thanks Stuart. The bloat is a problem and I have fixed them in the past using this method but me real concern is the lack of star colour. For some reason the stars in this image have oversaturated to the point of turning pure white. With most images I can get away with 10 min exposures without this problem.
My next big adventure after I finish the Christmas tree is to get my 8" RC out of the box and try it out. I have finally got the robofocus, Tak flattener and the FT focuser should be here this week so I look forward to having a bit more focal length again. I have an 8" dew shield already so everything should be right to go.