Ha LRGB processing

//Ha LRGB processing

Ha LRGB processing

From Cloudy Nights:

Ha/RGB Processing

Start with well-processed H-alpha (as grayscale) and RGB images. Process each separately at first.
Register the two images.
Convert the H-alpha image to RGB.
Delete (make black) the green and blue channels.
Select all, copy, and paste this red image onto the RGB image.
Change the blend mode on this layer to “lighten.”
Adjust the histogram (mainly gamma) of the H-alpha layer to bring its brightness up a bit (gamma ~1.3).
Flatten this image.
Select all, copy, and paste this image onto the original grayscale H-alpha image.
Change the blend mode to “lighten.”
Flatten this image.
Select all, copy, and paste this image onto the RGB+H-alpha image.
Change the blend mode to “luminosity.”
Change the opacity to ~50%.
Season to taste.

Or:

http://bf-astro.com/tutorial/addHa.htm

Hubble palette colour manipulation

http://bf-astro.com/hubblep.htm

By | 2018-10-16T11:05:57+00:00 16 October 2018|Categories: Technique|Comments Off on Ha LRGB processing