The Triple cluster in Cassiopeia:
NGC133, NGC146, King 14
with 10" f/3.9 Astrograph
Uploaded 12/3/17

 
This
            spectacular trio of clusters is off the beaten path of bright
            Cassiopeia open clusters. Consisting of two NGC and one King
            cluster, this perfect grouping is an amazing sight visually and
            a superb target for imaging. On the left is NGC146, a 9th magnitude
            rich cluster that is 9 arc minutes in size. To its right is the
            star stream cluster, NGC133 and is 9.4th magnitude and 7 arc
            minutes in size. Finally below center is the surprising King
            14, a stunning cluster that is 8.5 magnitude and 7 arc minutes
            wide.

            
Select an image size for a larger view:

1400 x 1200


Instrument:  10" f/3.9 Orion Astrograph Newtonian with Baader MPCC
Mount:  Astrophysics 1200 QMD
CCD Camera:  SBIG 10XME NABG with Enhanced Water Cooling
Guider: Meade DSI Pro  w/80mm piggyback refractor
Exposure:  RGB =  5:5:5
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:  45 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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