Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent nebula  ·  IC 1311  ·  IC 1318  ·  M 29  ·  NGC 6888  ·  NGC 6910  ·  NGC 6913  ·  NGC 6914  ·  The star 34Cyg  ·  The star 40Cyg  ·  The star Sadr (γCyg)  ·  gamma Cyg nebula
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Sadr Region - HaRGB, DeepSkyView
Sadr Region - HaRGB
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Sadr Region - HaRGB

Getting plate-solving status, please wait...
Sadr Region - HaRGB, DeepSkyView
Sadr Region - HaRGB
Powered byPixInsight

Sadr Region - HaRGB

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Description



The Sadr region, IC 1318, is the busy neighborhood round the mag 2.2 star Sadr or gamma Cygni. It is a large expanse of nebulosity with dominant Ha emission nebulae and various dark nebulae. The Crescent Nebula (in the lower left cover of the image) is embedded into the region.

This is one of my first attempts at combining Ha data with a relatively short RGB exposures for the stars. There was some problem with the blue channel (bloated stars), therefore the RGB data its not great. I am also fighting with the color for the Ha component – a pure RGB red looks somehow wrong, so I mixed a little Ha data into the blue channel in addition. Definitely leaves room for improvement... for now I prefer the mono version.

Using my wide-field setup with the Asahi/Pentax Takumar 135mm f/2.5 with the ATIK 460EXm. Make sure to look at this image in full-size view.

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Sadr Region - HaRGB, DeepSkyView