Sigma to Pi Scorpii Region
Emission, dark, star clouds, etc.
Uploaded 6/27/25

 

            
This shot spans from
            Antares on the lower left corner to Pi Scorpii on the right side
            and was very carefully composed to include some of the most spectacular
            nebula in the early summer sky. Note that the yellow dust cloud
            surrounding Antares is one of the few yellow reflection nebula
            in the entire sky. Also note that between the rho ophiuchi complex
            and the sharpless nebula on the right side are a general diffuse
            background of both emission and reflection components.

            
Technical Data: Samyang
            135mm f/2, ASI2600mm + IDAS NBZ filter, LRGB = 2 hours total,
            Happy Jack, Az.

            
Select an image size for a larger view:

1400 x 1200


Instrument:  Samnyang 135mm f/2 @ f/2.4
Mount:  Home Made GEM
Camera:  Color CMOS ASI2600 MC Pro
Guider: ASI mini  w/50mm piggyback refractor
Exposure:  120m ( 5 min subs)
Location:  Happy Jack, Arizona, Elevation:  7000 ft.
Sky:  Seeing FWHM = 2 arcsec , Transparency 9/10
Outside Temperature:  45 F

Image Processing Tools: 
Maxim DL6:  Calibration
PixInsight:  Alignment, Stacking, Star Removal
Photoshop CS2:  Curves, Color Correction, Cleanup

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