M82 in Ursa Major



Scope: C8 f/8; Location: Blair Valley, Anza Borrego Desert, CA; 23 December, 2006; Camera: Artemis285

Exposure: 7 x 480 sec  Luminance exposures with IR Block Filter (bin 1x1); 6 x 120 sec RGB (bin 2x2) 

Processing: Images were captured in Artemis Capture (as FITs). Aligned/stacked in Registax 3 and saved as FITS. Luminance and Color channels were numerically scaled and  color balanced in Astroart.  Channels were co-registered in Astroart.  Curves and Levels applied in Photoshop to optimize object features.  Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB).  G2V color calibration   factors were applied to the color channels for color correction.  Selective sharpening with layer mask was applied to galaxy  features. Red was enhanced in the starburst region (central axis). Color balancing and final touches were done in Photoshop.  Final Image size is approximately 1392x1040.

 North is up in this image. M82 is an irregular galaxy located in the constellation of Ursa Major. M82 is believed to be in heavy starburst; it is a strong radio frequency source and is one of the brightest galaxies in infrared light. The distance of M82 to Earth is approximately 12  million light years. This image replaces and earlier image that can be seen in the Archives here.  Horizontal FOV is about 20'

Image Center approximately - Equatorial 2000: RA: 09h 55m 54s Dec: +6940'59"


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