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Old 22-08-2008, 08:09 AM
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marc4darkskies (Marcus)
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marc4darkskies is offline
 
Join Date: Mar 2007
Location: Quialigo, NSW
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Nice image Fred, good detail - not purple like the last one. Shame your FOV's a little too narrow though. I don't have a very good monitor here at work but I tend to agree with Greg's comments re colour.

Quote:
Originally Posted by Bassnut View Post
...The colour clipping previously (on extensive investigation) was caused by CCD stack colour create and then scaled TIFF save. ....

http://fredsastro.googlepages.com/home
I NEVER save scaled TIFs out of CCDStack - limits my ability to properly scale, balance and tweak in PS (like you've discovered), and to reduce noise (I like to do that on the unstretched lum layer).

Quote:
Originally Posted by Bassnut View Post
......Saving unscaled causes combing artifacts in PS on stretching. It sucks, so I saved each colour sub seperately as a FIT and opened with FITS liberators stretch (it cant handle RGB) in PS, then balance in PS, which is manual and much harder,
Hmmm. never noticed that - what artifacts are you talking about specifically? RGB combining in PS is for masochists Fred!!! CCDStack is best for that IMO.

Cheers, Marcus
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