Friday, May 14, 2010

M13 The "Great Hercules Cluster"


This image was captured on May 13th from my deck in Abbotsford.  It was the first clear night for several weeks.  The image is segment of a larger image and is composed of 15, 4 minute exposures.  M13 is 25 thousand ly distant, has a diameter of 145 ly (about 20 arc minutes in the image) and contains several 100,000 stars.

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