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"The Wall" NGC 7000 in Cygnus

 

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Scope: Explore Scientific "Levy" Mak-Newt 152 mm at f/4.8,  Laguna Mountains, CA   23 July 2011, Camera: ST8300M

Exposure: 14 x 8 minutes H-Alpha (1x1 bin),  8 x 3 minutes RGB Exposures (2x2 bin) 

Processing: Images were captured with CCDSoft. Aligned/stacked and dark subtracted in Astroart ; Sigma Combine method was used for stacking subs.  All channels were scaled and rough color balanced in Astroart.  Gradient removal  was done in Astroart. Channels were co-registered in Astroart.   The 8 minute 1x1 bin H-Alpha  exposures  were  blended with a RGB summed luminance for the main luminance construction. Level adjustments and curves were used to bring out object features.  LRGB combine was done in Photoshop.   A light background noise reduction was applied  to the Luminance channel.  Selective sharpening was applied to the Luminance channel.  Final touches and color balance in Photoshop. Final Image size is approximately 3252x2532 (cropped and resized to 2400x1800).

All exposures in this image were guided; North is up in this image. The field in this image is from the constellation of Cygnus. This object is part of the larger "North American" Nebula (NGC7000). The distinctive feature is the extended emission front running diagonally across the image from upper left to lower right. Seen in a different orientation here, the hydrogen formation looks like "a bat on the wing". This emission region is approximately 1,600 light years distant from Earth.  This image replaces an earlier image in the Archives here. The Horizontal FOV is 88'.

Image center is located approximately - Equatorial 2000: RA: 20h 59m 30s Dec: +4328'03" 

 

H-Alpha image of the NGC 7000  region

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All images and content remain the property of Jim Thommes - copyright 2003 - 2012

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