The Rho Ophiuchi Nebula IC4604
Uploaded 7/20/23



Instrument:  10" f/3.9 Orion Astrograph Newtonian with Nexus 0.75x CC = f/2.9
Mount:  Astrophysics 1200 QMD
CCD Camera:  ATIK 16200 
Guider: ASI120  w/80mm WO Zenithstar 81 piggyback refractor
Exposure:  1.5h
Astronomik  RGB Combine Ratio:  1: .9: 2
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 3 arcsec , Transparency 9/10
Outside Temperature:  55 F
CCD Temperature:  -30 C
Image Processing Tools: 
Maxim DL6:  Calibration, PixInsight:  All Remaining processing, Production finishing: Photoshop CS2

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