Messier Objects

M3: Globular Star Cluster (Canes Venatici) RA: 13h 42.2m / DEC: +28° 22'.5
Instrument: 10-inch Starfinder

M3 doesn't get the same press as M13 in Hercules, but this globular cluster is hard to beat when it comes to sheer beauty. M3 resides in Canes Venatici but many observers associate it with the constellation Bootes. Arcturus is 12 degrees to the southeast. Observers with access to dark skies will be able to use 5.0 magnitude 9 Bootis and 6.2 magnitude HD 119081 as landmarks. 9 Bootis is just 3.3 degrees east of M3. HD 119081 is closer, about half-a-degree southwest of M3. This magnitude 6.3 globular appears 15' across at 129X in the 10-inch. It is framed by three relatively bright stars and a host of fainter stars are peppered across the disk. Here's an added bonus. NGC 5466, a 9.2 magnitude globular, resides 5.1 degrees to the east.

M2 M4


Navigation Image, see text links below Web Links Glossary Sketching Astrophotography Planetary Observing Deep-sky Observing Getting Started About Cosmic Voyage Home

Home | About Cosmic Voyage | Getting Started | Deep-sky Observing | Planetary Observing | Astrophotography | Sketching | Glossary | Web Links


Layout, design & revisions © W. D. Ferris
Comments and Suggestions:

Revised: February 10, 2002 [WDF]