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, 



    
        

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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

Technical card

Imaging telescopes or lenses: Asahi Pentax SMC Takumar 135mm f/2.5

Imaging cameras: Atik 460EX mono

Mounts: SkyWatcher NEQ3

Guiding telescopes or lenses: APM Telescopes Finder 60mm

Guiding cameras: Astrolumina QHY5L-II m

Software: SequenceGeneratorPro  ·  PixInsight  ·  PHD2 Guiding

Filters: LRGB  ·  Baader Ha 7nm


Dates:July 27, 2016

Frames: 36x300"

Integration: 3.0 hours

Avg. Moon age: 22.74 days

Avg. Moon phase: 43.74%


Basic astrometry details

Astrometry.net job: 1203169

RA center: 20h 20' 47"

DEC center: +40° 14' 52"

Pixel scale: 6.956 arcsec/pixel

Orientation: -89.967 degrees

Field radius: 3.401 degrees


Resolution: 2749x2199

Locations: Mallorca, Son Macia, Mallorca, Spain

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, 



    
        

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