M12 - Globular Cluster in Ophiuchus

The Messier Ten Minute Challenge

M12 - Globular Cluster in Ophiuchus

M12 (NGC 6218) was discovered by Charles Messier in 1764. Although
similar in many respects to its apparent neighbor, M10 it is much less
concentrated toward the center. M12 lies at its distance of about
16,000 light years and is 75 light years across

http://www.martin-nicholson.info/ten...llenge/m12.htm

Martin Nicholson, Daventry, England.

My website is at http://www.martin-nicholson.info/1/1a.htm
My informal Astronomical Blog is at http://ukastronomy.livejournal.com/