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M22 in Sagittarius



Scope: C8 f/5.1; Location: Dos Picos Park, Ramona, CA;  30 July 2005; Camera: Artemis285

Exposure: 10 x 60 sec Luminance exposure (bin 1x1)with Baader IR Block Filter; 8 x 45 sec RGB (bin 2x2)

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 60 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. SGBNR was used to smooth background noise on the final result. Final Image size is approximately 1392x1040

This image was guided; North is up. The image was taken with fairly good conditions at a semi dark site.   M22 is the third brightest globular clusters in the sky as viewed from Earth (Omega Centauri and 47 Tucanae are brighter). It is a distance of about 10,400 light years. It also contains a planetary nebula (IRAS 18333-2357) which is visible as a speck of light in the lower right part of the dense star disk.  This image replaces an earlier image that can be seen in the Archives here. Horizontal FOV is 30'

Image Center is approximately - Equatorial 2000: RA: 18h 36m 24s Dec: -2354'10"


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

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