NGC7538 in Cepheus 
Emission nebula shaped like a Mammal like reptile footprint
Uploaded 1/18/21

 
This
            interesting complex of nebulosity is centered on NGC7538 a 10
            arc minute emission nebula with complex inner structure. Sharpless
            1-59 is the small red patch to the lower left, and the general
            red glow on the left side is associated with the Bubble nebula
            nearby.

            
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:  85m ( 5 min subs)
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 2 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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