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Gamma Cygni Nebula - IC1318




Scope: Megrez II at f/5.4; Location: Dos Picos Park, Ramona, CA;  9 August, 2008; Camera: Canon XT 350D (Baader ACF modified)

Exposure: 8 x 12 min Ha (13nmAstronomik EOS clip), 10 x 4 min (no filters) all ISO 800, 5 Darks each, no Flats 

Processing: Images were captured with DSLR Focus  and saved as RAW file format. Images were decoded and dark corrected in IRIS. Images were aligned and stacked in IRIS with Sigma Median.  Dark point equalization and rough color balance  were done in IRIS. Color saturation, and gamma adjustments also done in Iris. Image was saved as Tiff. Luminance construction consisted of the Ha exposure stack lightened by the no filters exposure stack. Both were done in RGB converted to grayscale in Photoshop. LRGB Combine was done in Photoshop using the unfiltered exposure for color and the luminance construction as the luminosity layer. A color adjustment was done for low signal intensity level (more red). Final stretching and touch up was done in PhotoShop.  Final Image size is approximately 2400 x 1593.

North is up in this image. The image was taken with medium light pollution conditions. This is a guided image.  The bright star seen in this image is Gamma Cygni which gives its name to the nebulous area surrounding it. The star is also commonly known as Sadr. Sadr is about 1,524 light years distant. IC 1318 is an emission nebula with a dominate Hydrogen Alpha emission line.. Horizontal FOV is 178'

Object Center is approximately - Equatorial 2000: RA: 20h 22m 14s Dec: +4015'24" 

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