Crescent Nebula (NGC6888) in Cygnus HaRGB (Michele Vonci)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · NGC 6888

Crescent Nebula (NGC6888) in Cygnus HaRGB, Michele Vonci

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Crescent Nebula (NGC6888) in Cygnus HaRGB

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Crescent Nebula (NGC6888) in Cygnus HaRGB

Another experiment with the new monochrome camera (ASI1600MM): the Crescent Nebula #NGC6888 in the Cygnus constellation! The Cygnus is still visible despite the autumn approaching fast...and last Friday I managed to collect 2h15min of total light frames: 1.5h of H-a (23x240s) and 15min (10x90s) for each RGB channel. I processed the image with the classical HaRGB workflow, combining the R and H-a channel in a "super" red channel which is then combined with the G and B channel in a colour layer. Another layer of H-a only is then superimposed as luminance to give a highly contrasted and low-noise image. Still not happy with the overall colour though...I keep getting this pinkish tone which I don't like much...and the stars are off too...room for improvement :-)!

EDIT:Finally I've gotten a colour of the nebula and stars that I like. Also, I used darks! Specially the 300s H-a frames were in desperate need of darks to get rid of the amp glow. I used darks for the 90s RGB frames too and that allowed me to pull out more of the diffuse nebulosity around the Crescent Nebula.

Suburban Astrophotography
Imagers of Italy
Cloudy Nights
UK Astro-Imaging

Nebulae

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Astrometry.net job	5318655
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Crescent Nebula (NGC6888) in Cygnus HaRGB

Crescent Nebula (NGC6888) in Cygnus HaRGB

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Crescent Nebula (NGC6888) in Cygnus HaRGB

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