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vdB 31 in Auriga



Scope: Explore Scientific MN152 Maksutov Newtonian at f/4.8, Location: DAA Observatory, Shelter Valley, CA,  3 December 2016  Camera: ST8300M (Baader Ha LRGB filters)

Exposure: Exposure:  16 x 12 min (1x1 bin) exposure with IR/UV Block filter, 8 x 5 min (2x2 bin) RGB exposures.

Processing: Data Collection -  Sequence Generator Pro (as FITs).  Calibrated, stacked (Kappa Sigma Combine) - Deep Sky Stacker. LRGB channel registration, equalization, and gradient removal - Astroart.  Curves, Levels, RGB combine - ImagesPlus. Luminance Layering, final stretch, and finishing  - Photoshop.  RGB calibration - eXcalibrator. This image is a  RGB combine with Luminance layering.  Color saturation in LAB color.  The IR/UV Blocking filter exposure stack was used for the luminance layer. Images processed at 3352 x 2532 resolution. Final Image size is approximately  2800 x 2100.

North is up in this image.   The main feature in this image is the reflection nebula known as vdB 31; the illuminating star is AB Auriga. This  is thought to harbor a proto planetary dust disk. The dark clouds are named Barnard 26, 27, and 28 (as well as the various parts of  LDN 1517). The dust region trailing to the upper right of the image contains  LDN 1513 and 1515. There are several background galaxies in this image. The most notable is UGC 3205.  These objects  are identified in the annotated image.. The star AB Auriga is about 470 light years distant from Earth. UGC 3205 is about 157 million light years distant. Horizontal FOV is 85'

Image center is located approximately - Equatorial 2000: RA: 04h 53m 53s Dec: +3029'03"


All images and content remain the property of Jim Thommes - copyright 2003 - 2017 copyright 2003 - 2012

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