Open Cluster in Sagittarius

 
Messier Object 18, M 18
 

 

Image Information
Date Imaged 7/1/2006
Location Imaged From

Tierra del Sol , CA

Equipment Telescope: Orion 80ED
Mount: Meade 10" LX200
Camera: Canon Digital Rebel
Focal Ratio: f/7.5
Exposure Information 3 X 300 seconds @ ISO 800

Open Cluster M18 (also known as Messier Object 18 or NGC 6613) is an open cluster in the constellation Sagittarius. It was discovered by Charles Messier in 1764 and included in his list of comet-like objects. M18 is situated between the Omega Nebula (M17) and the Sagittarius Star Cloud (M24). Its age is estimated at 32 million years.