NGC7023 - The Iris Nebula in Cepheus
with 10" f/3.9 Astrograph
Uploaded 10/15/20

 
This
            amazing region contains both reflection and dark nebulosity in
            one unique object. The central reflection nebula colored blue
            is NGC7023. In the open "window" on its right side
            is a piece of dark sky with the cluster Cr427. Surrounding the
            inner blue glow is a much larger dust cloud, faintly illuminated
            by the nearby stars in the region. This deep exposure is 1 hour
            in length and was with the 10 inch f/3.9.
 

            
Select file size to view:

1400 x 1290


Instrument:  10" f/3.9 Orion Astrograph Newtonian with Baader MPCC
Mount:  Astrophysics 1200 QMD
Camera:  ZWO ASI071MC Pro Color CMOS
Guider: ZWO ASI mini  w/80mm piggyback refractor
Exposure:  60m
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 3 arcsec , Transparency 9/10
Outside Temperature:  55 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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