NGC772 in Aries
with 10" f/3.9 Astrograph
Uploaded 10/30/21

 
This
            11.1 magnitude spiral is always amazing each time I take a new
            image. This time I was able to pull up more faint outer detail
            than I ever obtained with the slower 12.5" f/5 for the same
            exposure. An additional spiral arm is seen arcing over the galaxy,
            and a diffuse star spray extends below toward NGC770 companion
            galaxy. A nice edge on spindle is to the upper left edge!

            
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: ASI120  w/80mm piggyback refractor
Exposure:  85m L, 60m RGB
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:  -25 C
Image Processing Tools: 
Maxim DL6:  Calibration, deblooming, stacking: Deepsky Stacker, PixInsight:  Curves, Deconvolution
Photoshop CC  Curves, Color Correction,  Cleanup

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