The Trifid Nebula M20 & Open Cluster M21
Uploaded 10/31/20


Instrument:  8" f/3.9 Orion Astrograph Newtonian with Baader MPCC
Mount:  Home Made GEM
Camera:  ZWO ASI071MC Pro Color CMOS
Guider: Meade DSI Pro  w/80mm piggyback refractor
Exposure:  90m
Location:  Happy Jack, Arizona, Elevation:  6900 ft.
Sky:  Seeing FWHM = 2 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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