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Barnard 75 and 262 in Ophiuchus



Scope: FSQ-106N 106 mm refractor at f/5, Location: Laguna Mountains, CA  8  June 2013  Camera: Artemis285

Exposure: 18 x 6 min  (1x1 bin) exposure with UV/IR block, 8 x 3 min (2x2 bin) RGB exposures.

Processing: Data Collection -  Artemis Capture (as FITs).  Calibrated, stacked (Sigma Combine), LRGB channel registration, equalization, central gradient removal - Astroart.  Curves, Levels, LRGB combine and finishing  - Photoshop. Final color Calibration with eXcalibrator. This image is a straightforward LRGB combine with Luminance layering.     Final Image size is approximately 1800x1350.

North is to the left in this image. The dark Nebula on the left is known as Barnard 75; The dark nebula on the right is known as Barnard 262. What used to be considered a hole in the sky is now known to astronomers as a dark molecular cloud. Here, a high concentration of dust and molecular gas absorb practically all the visible light emitted from background stars. The eerily dark surroundings help make the interiors of molecular clouds some of the coldest and most isolated places in the universe.  Horizontal FOV is 55'


Image center is approximately - Equatorial 2000: RA: 17h 25m 14s Dec: -2216'44" 


All images and content remain the property of Jim Thommes - copyright 2003 - 2013

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