by Craig and Tammy Temple
This globular cluster was discovered on May 29, 1764 by Charles Messier. At magnitude 7.50, almost all of its stars are resolveable. M10 lies about 14,300 light-years away in the constellation Ophiuchus. This image was captured on June 13, 2009. The temperature was 75° F. It is a total of 45 minutes exposure time.
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10" Orion Newtonian f/4.7 w/Baader MPCC
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Atlas EQ-G w/EQMOD, Guided
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Canon 350D (self-modified) w/Astronomik EOS Clip IR filter + 2" Hutech IDAS LPS filter
- 9 x 300s @ ISO 400