NGC2359 in Canis Major - Thors Helmet Nebula
Wolf Rayet Bubble and Emission Nebulosity
Uploaded 3/21/21

 
This
            interesting object consists of an inner blue-green bubble blown
            outward by the hot stellar wind of a Wolf-Rayet star, surrounded
            by patches of emission, in a sea of red nebulosity. Just to the
            left of this object is the open cluster OC166, and to its right
            is the hard to see OC336. This field is 1.5 degrees wide (three
            full moons) and this exposure was with the 10 inch f/3.9 Orion
            Astrograph and 2.5 hours of exposure time.

            
Select an image size for a larger view:

1400 x 1200


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:  2.5 hours
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 2 arcsec , Transparency 9/10
Outside Temperature:  35 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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