IC4592 in Scorpius
with 8" f/3.9 Astrograph
Uploaded 6/27/21

 
This
            beautiful reflection nebula surrounds the star nu Scorpi, and
            just fits the 2 degree field shown here. There are no galaxies
            in this shot, the dust in the part of the sky blocks our view
            of distant galaxies and reddens the stars. The star nu marks
            the "eye" of a much larger "Blue Horsehead Nebula"
            as some call it, which is far larger than my smaller field here.

            
Select an image size for a larger view:

1400 x 1290


Instrument:  8" f/3.9 Orion Astrograph Newtonian with Baader MPCC
Mount:  Home Made GEM
Camera:  ZWO ASI071MC Pro Color CMOS
Guider: ZWO ASI120 mini  w/80mm piggyback refractor
Exposure:  30m
Location:  Happy Jack, Arizona, Elevation:  7000 ft.
Sky:  Seeing FWHM = 1 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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