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LDN 204 in Ophiuchus



Scope: FSQ-106N at f/5, Location: Laguna Mountains, CA   2 May 2014  Camera: Atik 383L

Exposure: Exposure: 13 x 10 min  (1x1 bin) exposure with UV/IR block,  8 x 4 min (2x2 bin) RGB exposures.

Processing: Data Collection -  Artemis Capture (as FITs).  Calibrated, stacked (Kappa Sigma Combine) Deep Sky Stacker, LRGB channel registration, equalization, and central gradient removal - Astroart.  Curves, Levels, LRGB combine and finishing  - Photoshop. This image is a  LRGB combine with Luminance layering.  Color saturation in LAB color;    Final Image size is approximately 2800 x 2100.

North is to the left in this image. This field is the LDN 204 Region in the constellation of Ophiuchus. In addition to LDN 204 is also LDN 190 and LDN191. The furthers to the right is part 6 of the TGU 71 dark cloud (TGU 71  encompasses all of LDN 204, 190, and 191). The TGU is a lesser known catalog by the Tokyo Gakugei University of Dark Clouds. Additionally, there are a few background galaxies  in this field . The Dark Cloud identification and the background galaxies are identified in the  annotated image.   Horizontal FOV is 120'

Image center is approximately - Equatorial 2000: RA: 16h 47m 59s Dec: -1215'59"


All images and content remain the property of Jim Thommes - copyright 2003 - 2014

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