Kohoutek 3 - 82 Planetary Nebula in Cygnus

(the diameter is less than 19 arc-seconds with a central star of 19,6 mag.)
 


 

Exposure Data: 04./05.08.2003.  LRGB: L=20x5min. (2x2), R=10x4,5min. (3x3), G=10x5min. (3x3), B=10x8,35min. (3x3), compl. 4 2/3 hours. 
 
Processing: Acquired via MSB AstroArt, no darks+flats, Sigma combined, RL-deconvolved in AIP4Win, registered in RegiStar, LRGB combined and other processing steps in Photoshop and Neat Image.
 
Optical System: 348/3007mm Hypergraph-Cassegrain, Starlight Xpress SXV-H9, Astronomik Filter wheel FR-03, Type II.b-Filters, Astro-Physics 1200 ESCAP-FS-2-GoTo. Off-axis guided with Starlight Xpress MX 516 without AO7.
 
Comments: Average FWHM was 2,1 arc-seconds. Poor transparency and medium seeing conditions. Picture upsampled 15%.
 
Author: Michael Breite
 

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