NGC6946 Galaxy and NGC6939 Open Cluster Pair
with 10" f/3.9 Astrograph
Uploaded 10/11/20

 
This
            stunning pair of dissimilar objects lies in southern Cepheus
            which just fit perfect in the 10 inch with this camera. This
            is a short 40 minute set of data, but shows the beautiful blue
            stars and yellow core of NGC6946 and the range of golds and blues
            in the cluster NGC6939. Look carfully to the lower left of the
            cluster and youll see an enlongated fuzzy patch. This is a 16th
            magnitude UGC galaxy that is 2 arc mins in size.

            
Select an image size for a larger view:

1400 x 1290


Instrument:  10" f/3.9 Orion Astrograph Newtonian with Baader MPCC
Mount:  Astrophysics 1200 QMD
Camera:  ZWO ASI071MC Pro Color CMOS
Guider: ZWO ASI mini  w/80mm piggyback refractor
Exposure:  40m
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 5 arcsec , Transparency 9/10
Outside Temperature:  55 F

Image Processing Tools: 
Maxim DL6:  Calibration, Color Conversion, aligning, stacking
PixInsight:  Saturation Curves
Photoshop CS2:  Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup

HOME   GALAXIES     EMISSION NEBS     REFLECTION NEBS   COMETS  
   GLOBULARS     OPEN CLUST     PLANETARIES     LINKS