M 3

LRGB 105 56 56 56

Tele Vue NP 127fli

ASA DDM 60 Pro

FLI ML 16200


Constellation Canis Venatici

Ra 13:42:11.62

Dec +28:22:38.2

Messer 3 (or NGC 5272) is a globular cluster of stars in the northern constellation of Canes Venatici. It was discovered on May 3, 1764 and was the first Messier object to be discovered by Charles Messier himself. Messier originally mistook the object for a nebula without stars. This mistake was corrected after the stars were resolved by William Herschel around 1784. Since then, it has become one of the best-studied globular clusters. Identification of the cluster's unusually large variable star population was begun in 1913 by American astronomer Solon Irving Bailey and new variable members continue to be identified up through 2004. Many amateur astronomers consider it one of the finest northern globular clusters, following only Messier 13. M3 has an apparent magnitude of 6.2. This cluster is one of the largest and brightest, and is made up of around 500,000 stars. It is estimated to be 8 billion years old and is located at a distance of about 33,900 light-years away from Earth.

(c) Patrick Winkler - All Rights Reserved