LDN 1158 and 1147 in Cepheus



Scope: ZenithStar 66 mm APO @ f/4.3 Location: Laguna Mountains, CA   12 September, 2009  Camera: Artemis285

Exposure:  12 x 6 min IR/UV Block,  7 x 3 min RGB Exposures 

Processing: Images were captured  with Artemis Capture (as FITs).  Aligned/stacked and dark subtracted in Astroart with Sigma Combine.   IR / UV Blocking  filter  and Color channels were scaled and  color balanced in Astroart.  Channels were co-registered in Astroart.   Luminance construction consisted of the IR/UV blocking filter exposures.  Curves and Levels applied in Photoshop to the Luminance construction to optimize object features.  A light background noise reduction was applied to the luminance construction in PixInsight LE (SGBNR).   Final LRGB combine was done in Photoshop using Luminance Layering.     Final Image size is approximately 1400 x 1054.

All exposures in this image were guided; North is up in this image.  These objects are  patches of interstellar dust in the constellation of Cepheus. These dark nebulae are listed in Lynd's Dark Nebula catalog as LDN1158 and LDN1155 (toward the left); LDN1152 and LDN1157 (along the upper part of the image); and LDN1147 (lower center).  The Horizontal FOV is 101'.

Image center is located approximately - Equatorial 2000: RA: 20h 40m 01s Dec: +6734'12"


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