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IC 1311 in Cygnus



Scope: Explore Scientific "Levy" Mak-Newt 152 mm at f/4.8,  Dos Picos Park, Ramona, CA   22 June 2011, Camera: ST8300M

Exposure: 13 x 9 minutes H-Alpha (1x1 bin),  8 x 4 minutes RGB Exposures (2x2 bin) 

Processing: Images were captured with CCDSoft. Aligned/stacked, flat fielded  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 9 minute 1x1 bin H-Alpha  exposures  was  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 in PixInsight LE (SGBNR) to the Luminance channel.   Selective sharpening was performed. Final touches and color balance in Photoshop. Final Image size is approximately 3352x2532 (cropped and resized to 3200x2400).

All exposures in this image were guided; North is up in this image. The field in this image is from the constellation of Cygnus. IC 1311 is the designation for a star cluster with nebulosity. The main core of the cluster is a small dense knot of stars toward the right of center in this image. The general region is rich with hydrogen emission as evidenced by the red nebulosity. The cluster is located approximately 4,000 light years from Earth.  This image replaces an earlier image that can be seen in the Archives here.  The Horizontal FOV is 88'.

Image center is located approximately - Equatorial 2000: RA: 20h 12m 54s Dec: +4112'18" 


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

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