The Sagittarius Star Cloud - M24
with 8" f/3.9 Astrograph
Uploaded 10/17/20

 
This
            densely packed star field is one of the most brilliant parts
            of the summer Milky Way. The entire field is filled with blue
            and gold stars, with an open cluster to the right of center (CR469)
            and three groups of Barnard dark nebula along the bottom. From
            left to right is Barnard 92, 93, 307. This is a 15 minute integration
            with the 8" f/3.9 Orion Astrograph up in Happy Jack.

            
Select an image size for a larger view

1400 x 1290


Instrument:  8" f/3.9 Orion Astrograph Newtonian with Baader MPCC
Mount:  Astrophysics 1200 QMD
Camera:  ZWO ASI071MC Pro Color CMOS
Guider: Meade DSI Pro  w/80mm piggyback refractor
Exposure:  90m
Location:  Happy Jack, Arizona, Elevation:  6900 ft.
Sky:  Seeing FWHM = 2 arcsec , Transparency 9/10
Outside Temperature:  45 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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