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M30 in Capricornus



Scope: C8  f/8 Location: Del Mar, CA   25 September, 2005  Camera: Artemis285

Exposure: 11 x 120 sec  Luminance Exposure with IR block filter, 8 x 60 sec each RGB  Exposures

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. Channels were co-registered in Astroart. The 120 sec exposures were used as the main luminance with level adjustments and curves to bring out object detail and preserve core detail. Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB).  Color balancing and final touches were done in Photoshop. Background noise was subtracted (using dust and scratches difference layer with high threshold - stars and object mask). SGBNR was used to smooth remaining background noise on the Luminance Channel. Final Image size is approximately 1392x1040

This image was guided; North is up. The image was taken with fairly good conditions at a heavily light polluted site.   M30 is at a distance of about 26,000 light years. M30 is located in the constellation of Capricornus. It is one of the densest globular clusters in the Milky way galaxy (has undergone core collapse). This means it has a small bright core that is difficult to resolve stellar detail within. This image replaces an earlier image that can be seen in the Archives here. Horizontal FOV is 19'

Image Center is approximately - Equatorial 2000: RA: 21h 40m 22s Dec: -2310'43"


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

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