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Old 01-06-2016, 12:58 PM
mountainjoo (Jerome)
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mountainjoo is offline
 
Join Date: Nov 2015
Location: Sydney
Posts: 71
Quote:
Originally Posted by Atmos View Post
It looks pretty good Jerome, I do agree that matching star profiles can be difficult. Have to come back to this with a bigger screen than my iPhone
Thanks Colin. After several failed attempts at trying to match the star profiles by shrinking the stars in the RGB image or growing the stars in the luminance image, I gave up and just masked them off. Seemed to work well.

Quote:
Originally Posted by glend View Post
Nice Jerome, as you know i have been working on NGC 6188 as well (it is in my Astrobin gallery top row right side in mono Ha). To me your image seems a bit dark and i think it would benefit from using Ha as a luminance layer. That way you might be able to catch more of the light streaming out from behind the cloud wall. Just a suggestion, but it is still very nice. Whoops, on the other hand, did you use Ha for luminance or a luminance filter?
Thanks for your suggestion Glen. I haven't used the Ha channel by itself for luminance. I have taken luminance data using a luminance filter and blended the Ha into it. I imagine that I could get away in this image with just using Ha for luminance (there's just the one small reflection nebula) and masking off stars when combining with the RGB to avoid the discontinuities (which I ended up doing anyway). I'll have to try this at some point.
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