Cygnus Widefield in Hydrogen Alpha

Gamma Cygni Nebula
All Images Copyright Steve Cannistra

Please click here or on image for a medium-size view.
Please click here for a larger-size view.
Please click here for a two-frame mosaic of this region.
Here is a smaller FOV image taken on 10/07/06 with the CM10/FS-102.

Magnitude:  ?
Size: about 45'
Distance: 1,550 light years
RA: 20h 25m 32s
Dec: 40 degrees 18' 55"

The region around the star Sadr, also known as Gamma Cygni, is full of emission nebulosity (designated IC 1318B).  IC 1318B is located within the constellation Cygnus and is close to other famous landmarks along the summer Milky Way, like the Pelican and North American Nebulae, the Crescent Nebula, and the Bubble.  This area is very rich in stars, hydrogen emission, and bands of opaque dust.  Feel free to check out the links to larger versions of this image.

Photographic Details:

Date:  April 21, 2007
Scope:  Takahashi FSQ106 at f5 on the G11 Losmandy Mount.
Autoguider:  SBIG ST-402 with e-finder.
Camera:  STL11K -20C.

Baader 7nm Ha filter.
Exposures:  8 x 20' unbinned, total exposure 2.7 hours.
Conditions:  Temperature 65 degrees F, good transparency, average seeing, clear, minimal moonlight.
Post-processing:  Calibrated, aligned, and Sigma Clip combined in Maxim, followed by DDP in ImagesPlus (IP).  Further processing in Photoshop CS (16 bit format).

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