Scope: C8 203mm  at f/3.4,  Location: Blair Valley, Anza Borrego Desert, CA  26 April,  2008,   Camera: Artemis285

Exposure: 7 x 9 min H-Alpha (1x1), 7 x 1 min RGB Exposures (2x2). 

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.  Central Gradient removal was performed on the RGB exposure stacks. 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 made to correct the color at low RGB signal levels.  A light background noise reduction was applied in PixInsight LE (SBNR).  .  Final Image size is approximately 1392x1040.

 North is to the right in this image. The field in this image is from the constellation of Cygnus. The object in this image, DWB-111, is an  emission nebula.  This image replaces and earlier image that can be seen here. The Horizontal FOV is 45'.

Image center is located approximately - Equatorial 2000: RA: 20h 16m 18s Dec: +4339'35"


All images and content remain the property of Jim Thommes - copyright 2003 - 2015

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