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M55 in Sagittarius



Scope: C8  f/6 Location: Blair Valley, Anza Borrego Desert, CA   21 Oct. 2006  Camera: Artemis285

Exposure: 14 x 60 sec  Luminance with IR Block Filter (bin 1x1); 10 x 30 sec RGB (2x2 bin)

Processing: Images were captured Artemis Capture (as FITs). Aligned/stacked in Registax 3 and saved as FITS. Luminance and Color channels were scaled and rough color balanced in Astroart. Central Gradient removal was performed in Astroart. Channels were co-registered in Astroart. The 60 sec IR block exposures were used as the main luminance construction with level adjustments and curves to bring out dim stars. Final LRGB combine was done in Photoshop.   Final touches were done in Photoshop. A  light dust and scratches was applied to the background. Final Image size is approximately 1392x1040.

North is up in this image. M55 is located in the constellation of Sagittarius. It is a large and loose globular cluster with stars resolved into the core. This image replaces an earlier image that can be seen in the Archives here.  Horizontal FOV is 25'


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

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