NGC869-884 the Double Cluster in Perseus
Twin Open clusters in Perseus
Uploaded 2/20/24

 
This
            is one of the first test shots with the new RASA taken while
            at a remote location north of Payson to give a good view of the
            western sky to image Comet PonsBrooks. This image was to test
            the guiding ports on the new mount and this is a set of three
            5 minute subs. The image was non linearly processed using an
            arcsine stretch to preserve star colors.

            
Select an image size for a larger view:

1400 x 1200


Instrument:  RASA 8" f/2
Mount:  Ioptron GEM45
Camera:  Color CMOS OSC
Guider: ASI mini  w/80mm piggyback refractor
Exposure:  15m ( 5 min subs)
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 2 arcsec , Transparency 9/10
Outside Temperature:  35 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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