Stephensen 1 Open Cluster
with NEXUS coma corrector
with 10" f/3.9 Astrograph @ f/2.9
Uploaded 9/30/24

 
This
            rarely imaged cluster is one of the bright stars in the Lyra
            constellation, and is always overlooked by imagers because of
            the nearby more interesting objects. At 2.5 magnitude, this brilliant
            cluster is sparse yet very colorful and makes for a splendid
            imaging target on warm summer nights.

            
Select an image size for a larger view:

1400 x 1290


Instrument:  10" f/3.9 Orion Astrograph Newtonian with Nexus 0.75x CC
Mount:  Astrophysics 1200 QMD
CCD Camera:  ATIK 16200 
Guider: ASI290  w/80mm WO Zenithstar 81 piggyback refractor
Exposure:  30m
Astronomik  RGB Combine Ratio:  1: .9: 1.6 = G2V  calibrated
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 3 arcsec , Transparency 9/10
Outside Temperature:  45 F
CCD Temperature:  -30 C
Image Processing Tools: 
Maxim DL6:  Calibration, PixInsight:  All Remaining processing, Production finishing: Photoshop CS2

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