NGC 188 in Cepheus

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Scope: Megrez II 80  mm APO  at f/5.8, Location: Laguna Mountains, CA   2 September 2011  Camera: Artemis285

Exposure: 15 x 4 min  (1x1 bin) exposure with UV/IR block, 8 x 2 min (2x2 bin) 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 channel consisted of the IR/UV blocking filter exposures.  Curves and Levels applied in Photoshop to the Luminance channel to optimize star depth.   Final LRGB combine was done in Photoshop.    Final Image size is approximately 1800 x 1350.

North is up in this mirrored image. The star cluster NGC 188 is located in the constellation of Cepheus just over 4 degrees from the North celestial pole.   It is considered one of the oldest open clusters in the Milky Way.  NGC 188 distance to Earth is  about 5,000 light years.   Horizontal FOV is approximately 67'

Image center is approximately - Equatorial 2000: RA: 00h 45m 44s Dec: +85°18'38"  

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

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