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Scope: C8 f/7.5, Location: Laguna Mountains, CA 16 June, 2007 Camera: Artemis285
Exposure: 3 x 240 sec Luminance with IR Block Filter (bin 1x1) and 12 x 60 (bin 2x2); 8 x 60 sec RGB (2x2 bin)
Processing: Images were captured Artemis Capture (as FITs). Aligned/stacked in Registax 4 and saved as FITS. Luminance and Color channels were scaled and rough color balanced in Astroart. Exposure sets were co-registered in Astroart. The 240 sec and the 60 sec IR block exposures were used as the main luminance construction. The 60 sec exposures provided a smoother background with 12 sub-frames; The 240 (1x1bin) provided a little more resolution and depth. Level adjustments and curves applied to bring out dim stars. Final LRGB combine was done in Photoshop. Final touches were done in Photoshop. Final Image size is approximately 1392x1040.
North is up in this image. NGC 5897 is a loose Globular Cluster in the constellation of Libra. It is about 40,400 light years distant from Earth. Horizontal FOV is 20'
Image center is approximately - Equatorial 2000: RA: 15h 17m 25s Dec: -21°00'35"