vdB 31 in Auriga
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ON IMAGE FOR FULL SIZE VIEW (2800x2100)
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: +30°29'03"
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