Trifid Nebula and Open Cluster M21 in Sagittarius
Uploaded 6/26/23



Instrument:  10" f/3.9 Orion Astrograph Newtonian with Baader MPCC
Mount:  Astrophysics 1200 QMD
CCD Camera:  ATIK 16200 
Guider: ASI120  w/80mm WO Zenithstar 81 piggyback refractor
Exposure:  6.5 hours HaRGB
Astronomik  RGB Combine Ratio:  1: 1.05: 1.5
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 3 arcsec , Transparency 9/10
Outside Temperature:  5 F
CCD Temperature:  -30 C
Image Processing Tools: 
Maxim DL6:  Calibration, PixInsight:  All Remaining processing, Production finishing: Photoshop CS2

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