IC 417 and NGC 1931 in Auriga



Scope: Megrez II APO 80mm  at f/5.2,  Location: Dos Picos Park, Ramona, CA  6 October,  2007,   Camera: Artemis285

Exposure: 8 x 8 min H-Alpha (1x1), 6 x 2 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.  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 (or LLRGB) 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)  Selective sharpening was applied to nebula features in Photoshop with a layer mask.  Final Image size is approximately 1040x1392

 North is up in this image. The field in this image is sometimes called the "Spider and the Fly". Here the spider is IC 417 and the fly is NGC 1931. This field is located in the Constellation of Auriga.  Both objects are emission/reflection nebulas. An earlier image of IC 417 can be seen here. The Horizontal FOV is 75'.

Image center is located approximately - Equatorial 2000: RA: 05h 29m 26s Dec: +3423'23" 


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