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How to add Ha to an RGB image?

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#1 SeymoreStars

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Posted 23 September 2019 - 01:07 AM

PixInsight's PixelMath was used to add Ha to an RGB like so....Is this what other people do?

R/K = red + Ha
G = green
B = blue


Edited by sink45ny, 23 September 2019 - 01:07 AM.


#2 SeymoreStars

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Posted 23 September 2019 - 02:00 AM

Never mind, I forgot all about the NBRGB script.


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#3 drmikevt

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Posted 23 September 2019 - 06:50 AM

Although that script can work well, I think the best results are possible with the use of an Ha-continuum mask to eliminate any unwanted Ha glow.  The process is described here and can work very well.  The mask needs a bit of massaging, but really makes a difference in the end.

 

http://pixinsight.co...als/narrowband/


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#4 Peregrinatum

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Posted 24 September 2019 - 11:01 AM

Could you use mono Ha in place of L?




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