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Southern Pinwheel Galaxy - M83



Scope: C8  at f/6.9, Location: Laguna Mountains, CA   11 May 2012  Camera: ST8300M

Exposure: 16 x 8 min  (2x2 bin) exposure with UV/IR block, 8 x 4 min (3x3 bin) RGB exposures.

Processing: Data Collection -  CCDSoft (as FITs).  Calibrated, stacked (Sigma Combine), LRGB channel registration, central gradient removal, and equalization - Astroart.  Curves, Levels, LRGB combine and finishing  - Photoshop. This image is a straightforward LRGB combine with Luminance layering.  Selective sharpening was applied to galaxy features.   Final Image size is approximately 1800 x 1350.

North is up in this image. This image replaces an earlier image that can be seen in the Archives here. M83 is well known object  in the constellation of Hydra right on the border with Centaurus. It is also known as the Southern Pinwheel Galaxy. It is about 15 million light years distant from Earth. M83 is an intermediate class galaxy between a normal spiral and a barred spiral galaxy. Two faint galaxies PGC48132 and PGC724525 can be seen as small patches just to the left of M83 - they are about 612 million light years distant from Earth. Horizontal FOV is about 44'

Image center is approximately - Equatorial 2000: RA: 13h 37m 00s Dec: -2952'02"


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

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