The  Gamma Cygni Region in Cygnus
with 8" f/3.9 Astrograph
Uploaded 10/25/20

 
This
            2 degree wide field includes the red emission nebulosity IC1318,
            and the stunning open cluster NGC6910. This is a 15 minute exposure
            with the 8 inch at f/3.9 under moderately good skies in Happy
            Jack. The camera was run at -20C and at that temperature, the
            noise was non existent compared to my old Canon DSLR at the same
            site.

            
Select an image size for a larger view:

1400 x 1290


Instrument:  8" f/3.9 Orion Astrograph Newtonian with Baader MPCC
Mount:  Homemade GEM
Camera:  ZWO ASI071MC Pro Color CMOS
Guider: Meade DSI Pro  w/80mm piggyback refractor
Exposure:  15min
Location:  Happy Jack, Arizona, Elevation:  6900 ft.
Sky:  Seeing FWHM = 3 arcsec , Transparency 9/10
Outside Temperature:  45 F

Image Processing Tools: 
Maxim DL6:  Calibration, Color Conversion, aligning, stacking
PixInsight:  Saturation Curves
Photoshop CS2:  Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup

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