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Old 11-03-2010, 03:09 PM
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JohnH
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JohnH is offline
 
Join Date: Feb 2005
Location: NSW
Posts: 1,179
Quote:
Originally Posted by Bassnut View Post
Dont bother with LPR filter. Its normal for blue stars to be worse. Short of setting different focus offsets for each filter (eg with DL), just apply decon to blue to match other filter star sizes (or the min filter in PS).

Thanks Fred - that is a relief - thought I was going mad. I think I read about shooting blue when the target is high - that plus a refocus for blue should improve the raw data - and I will not be shy about hitting my blue frames with decon....thanks for the tip.

I have re-processed - it is now better but I have realised that I have actually over-exposed the L at 120s and this has burnt out the star cores, my colour balance is also not great, I used the auto feature in AA4 because I have not got calibration values for my filter CCD combo yet and there is light pollution in the signal (shooting S from North of Sydney for this object)...still a lot to learn..
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Last edited by JohnH; 11-03-2010 at 09:50 PM.
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