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IC1848 / Sharpless 199 in Cassiopeia

 

CLICK ON IMAGE FOR FULL SIZE VIEW (2400 x 1800)

Scope: Megrez II 80 mm at f/5.8,  Laguna Mountains, CA   1 October 2011, Camera: ST8300M

Exposure: 13 x 9 minutes H-Alpha (1x1 bin),  10 x 5 minutes UV/IR Block (1x1 bin), 10 x 4 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.  Central Gradient removal  was done in Astroart. Channels were co-registered in Astroart.   The 9 minute 1x1 bin H-Alpha  exposures  were  blended with 5 minute UV/IR Block exposures (40% lighten)  for the main luminance construction. Level adjustments and curves were used to bring out object features.  LRGB combine was done in Photoshop.   Selective Color adjustment performed on Reds and Magentas. A light background noise reduction and selective sharpening was applied  to the LRGB image.   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 Sharpless 199 /  LBN 672 complex is an emission nebula located in the Southeastern corner of the constellation of Cassiopeia. IC 1848 is the open cluster embedded in the nebulosity in the right portion of the complex. This field is just East of the somewhat better known IC1805 / IC1795 "Heart Nebula" complex. This nebula is sometimes called the  "Soul" Nebula as a counterpart to the Heart Nebula (Heart and Soul). Also in this image is the small Sharpless 201 nebula on the left of the main complex and the small Sharpless 198 nebula in the lower right. This image replaces an earlier image in the archives here. The Horizontal FOV is 130'.

Image center is located approximately - Equatorial 2000: RA: 02h 54m 45s Dec: +6022'04" 

 

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

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