Messier 13, the Great Hercules Globular Cluster

M13, the Great Hercules Globular Cluster


This is the famous Great Globular Cluster in Hercules, number 13 on Messier's list. It is faintly visible to the naked eye from a dark location such as Cherry Springs. It is one of the best globulars in the northern hemisphere, and is thought to contain about half a million stars.

Date: June 2, 2003
Exposure: 15 + 15 minutes
Telescope: LX200 10" @ f/10
Guiding: SBIG STV
Camera: Olympus OM-1
Film: Kodak Supra 400 (non-starburst)
Scanned: Hewlett Packard S20
Processing: Adjusted curves in Adobe Photoshop 6.
Ambient conditions: 37 F, 80% R.H.

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