Uploaded 9-Nov-09
Taken 9-Nov-09
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Dimensions2000 x 1332
Original file size2.07 MB
Image typeJPEG
M3 - Globular Cluster in Canes Venatici

M3 - Globular Cluster in Canes Venatici

Date: 4/22/2009
Telescope: Orion 8" f/4.9
Camera: Canon 10D (modified)
Exposures: 20x600 seconds @ ISO400
Location: Mocksville, NC
Temp: 45F
Seeing: 2/5
Transparency: 4/5
Captured in Canon Raw, stacked using DeepSkyStacker, processed in Photoshop.

Messier 3 (also known as M3 or NGC 5272) is a globular cluster in the constellation Canes Venatici. It was discovered by Charles Messier in 1764, and resolved into stars by William Herschel around 1784. This cluster is one of the largest and brightest, and is made up of around 500,000 stars. It is located at a distance of about 33,900 light-years away from Earth. M3 has an apparent magnitude of 6.2, making it visible to the naked eye under dark conditions. From a moderate-sized telescope, the cluster is fully defined.