NGC 6960 "Veil" Nebula in Cygnus



Scope: Megrez II at f/4.8,  Location: Dos Picos Park, Ramona, CA   13 August 2006,   Camera: Artemis285

Exposure: 8 x 300 sec H-Alpha (1x1),  6 x 120 sec IR/UV Block Filter (1x1), 8 x 120 sec RGB Exposures (2x2). 

Processing: Images were captured  with Artemis Capture (as FITs).  Aligned/stacked in Registax 3 and saved as FITS. Luminance,  H-Alpha, IR/UV Block,  and Color channels were scaled and  color balanced in Astroart. Channels were co-registered in Astroart.  Curves and Levels applied in Photoshop to optimize object features. Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB) - G2V calibration factors and Atmospheric Extinction factors were applied.  Selective sharpening was applied to nebula features in Photoshop with a layer mask.  SGBNR was used to smooth background noise on the final image.  Final Image size is approximately 1406x1040.

All exposures in this image were guided; North is to the Left in this image. NGC6960 is sometimes known as the Veil Nebula, sometimes as the Witches Broom, and sometimes as the Cirrus Nebula. This region is part of the Cygnus Loop - a larger complex that is really a super nova remnant.  Distance estimates vary but the approximate distance from Earth is about 2,600 light years. This image replaces and earlier image that can be seen in the Archives here . The Horizontal FOV is 82'.

Image center is located approximately - Equatorial 2000: RA: 20h 46m 32s Dec: +3044'18"


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