M35 & NGC2158 
Open clusters in Gemini
Uploaded 2/18/16

 
This
            pair of clusters in Gemini represents an extreme 3D effect -
            The smaller star cluster to the lower right of M35 is 10 times
            further away, making this an optical double rather than a binary
            cluster. Both are a stunning sight in larger apertures. This
            pair of clusters was imaged to check the sharpness of the stars
            across the field when the six inch is properly laser collimated.
            The results here look good, and this astrograph is ready for
            shooting deep sky objects and comets.

            
Select an image size 
for a larger view:

1290 x 960

Instrument:  Meade 622 Six inch f/3.6 Schmidt Newtonian
Mount:  Astrophysics 1200 QMD
CCD Camera:  SBIG 10XME NABG with Enhanced Water Cooling
Guider: Meade DSI Pro  w/80mm piggyback refractor
Exposure:  LRGB:
AstroDon RGB Combine Ratio:  1: 1.05: 1.2
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 3 arcsec , Transparency 9/10
Outside Temperature:  25 F
CCD Temperature:  -20 C
Image Processing Tools: 
Maxim DL6:  Calibration, deblooming (Starizona Debloomer), aligning, stacking
PixInsight:  Curves, Deconvolution
Photoshop CS2:  Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup

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