The Eagle Nebula in Serpens
with 10" f/3.9 Astrograph
Uploaded 7/10/16

 
This
            is what you call a VERY tight composition! South up, I had to
            really spend some time getting such a huge nebula to fit well
            in the field of the 10 inch. The "Hubble's Pillars"
            are in the center of this nebula, and there is more red emission
            nebulosity in this image than sky. This is an RGB image, with
            the R channel having twice as many sub frames averaged together
            as the G and B channels. This reduces the noise in the dominant
            color in this image and allows for more comprehensive processing.

            


            
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Instrument:  10" f/3.9 Orion Astrograph Newtonian with Baader MPCC
Mount:  Astrophysics 1200 QMD
CCD Camera:  SBIG 10XME NABG with Enhanced Water Cooling
Guider: Meade DSI Pro  w/80mm piggyback refractor
Exposure:  1h 40m total
AstroDon RGB Combine Ratio:  1: 1.05: 1.2
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 2 arcsec , Transparency 6/10
Outside Temperature:  55 F
CCD Temperature:  -20 C
Image Processing Tools: 
Maxim DL6:  Calibration, deblooming (Starizona Debloomer), aligning, stacking
PixInsight:  Curves, Deconvolution
Photoshop CS2:  Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup

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