Antares to Sigma Scorpii Region
Stellarvue SV80 f/6 Astrograph
Uploaded 7/9/23

 
This
            image is an hour exposure with a Stellarvue SV80S refractor and
            a 0.8x Televue Coma corrector and a OSC camera. This is the best
            shot we have taken so far from this site of the massive orange
            reflection nebula around Antares, but also includes a beautiful
            sky blue reflection nebula (IC4605) at the top embedded in the
            yellow dust. On the right is the brilliant blue star Sigma Scorpii,
            surrounded by a rich red hydrogen cloud of nebulosity (Sh2-9)
            featured in last weeks posting here. The mostly yellow suns of
            the globular M4 are to the lower right with its remarkable inner
            bar seen clearly here. The entire field is bathed in a red glow
            from red hydrogen.

            


            
Select an image size for a larger view:

1600 x 1290


Instrument:  SV80S Astrograph with Televue 0.8x FF
Mount:  Home Made GEM
Camera:  ZWO ASI071MC Pro Color CMOS
Guider: ZWO ASI120 mini  w/4" f/10 SCT guidescope
Exposure:  90m
Location:  Happy Jack, Arizona, Elevation:  7000 ft.
Sky:  Seeing FWHM = 1 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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