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Barnard Loop and NGC 2112



Scope: Vivitar 180 mm SLR lens at  f/4.0 Location: Blair Valley, Anza Borrego Desert, CA   20 December 2008  Camera: Artemis285

Exposure: 8 x 10 min H-Alpha (1x1 bin),  8 x 2 min RGB (2x2 bin) Exposures

Processing: Images were captured  with Artemis Capture (as FITs).  Aligned/stacked and dark subtracted in Astroart with Sigma Combine.   H-Alpha  and Color channels were scaled and  color balanced in Astroart.  Channels were co-registered in Astroart.   Luminance construction consisted of the H-Alpha exposure.  Curves and Levels applied in Photoshop to the Luminance construction to optimize object features.  Final LRGB combine was done in Photoshop using Luminance Layering in LAB color Space.   A color adjustment was made at low signal levels to attenuate blue and green and amplify red. A light background noise reduction was applied in PixInsight LE (SBNR).   Final Image size is approximately 1392x1040.

All exposures in this image were guided; North is up in this image. Barnard loop is a structure spanning about 10 degrees of sky. This image is the brightest part of Barnard's loop - about 3 degrees. The star cluster at the top of the image is NGC2112.  The Vertical FOV is 180'.

Image center is located approximately - Equatorial 2000: RA: 05h 54m 01s Dec: -0012'56"


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

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