Messier 18   HOME INDEX BACK NEXT

Open Cluster in Sagittarius

Messier 18 is small open cluster of a few dozen stars. It does not get much attention, as it is surrounded by more dramatic objects such as the Swan Nebula (M17) to the north and the Small Sagittarius Star Cloud (M24) to the south. It is situated in a rich star field of the Milky Way.

Magnitude 7.5
Apparent Size 9'
Distance (light yrs) 4,900
Right Ascension 18:19.9
Declination -17 08
Field of View 35' x 26'

Image details:  Exposure times of 12 minutes luminance and 6 minutes each of red, green and blue, taken with an SBIG ST-8300M imager and a 12" Meade telescope at f/5.6.

June 2013