- Barnard 169 in Cepheus - LRGB
From TelescopeLive: The main catalog to use to find and observe dark
nebulae was created by American astronomer Edward Barnard who is more
commonly known as E.E. Barnard. He was a gifted astronomical
observer who catalogued many of these items in the “Barnard Catalogue
of Dark Markings in the Sky” which is now known as the Barnard
Catalogue. Barnard originally published this catalog in 1919
in the Astrophysical Journal, listing 182 dark objects. A
later version of his catalogue published in 1927 shortly after his
death listed 369 objects.
Here is the straight RGB image for comparison:
Camera: Moravian G4 (16803 ccd) w Astrodon Gen II Filters
Mount: Paramount MX
15/15/15 x 10 min each of RGB
32 x 10min Luminance
Lucknow, Ontario, Canada
Images acquired using CCD-Commander and TheSkyX
Reduction and all pre-processing in PixInsight.
RGB processed in PixInsight using SPCC, BlurX, NoiseX then
HistogramTransformation, Curves and a masked Saturation boost.
processed in PixInsight using BlurX, NoiseX, then
StarX followed by HistogramTransformation, Curves and
contrast) then the stars were restored.
LRGBCombine in PI
Additional tweaks in Photoshop.