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Scope: C8 f/10; Location: Del Mar, CA; 23 August 2005; Camera:
Artemis285
Exposure: 10 x 90 sec Luminance exposure (bin 1x1)with Baader IR Block Filter; 8
x 60 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 90 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
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. M15 is at a distance of about 33,600 light
years. M15 is located in the constellation of Pegasus. It is one of the densest globular
clusters in the Milky way galaxy. 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
15' Image Center is approximately - Equatorial 2000: RA: 21h 29m 58s Dec: +12°10'03"
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