Jim Burnell's CCD Images - M18
 
M18
Object: M18 (NGC6613)
Open Cluster
 Const.: Sagittarius
Camera: HX916 Scope: AP130 Mount: AP1200GTO
Filter(s): IR block Exposure: 3x60s blank
The open cluster M18 in Sagittarius. A stack of 3 one minute exposures using a 5" f/6 refractor. The image was calibrated, defect corrected and stacked using AIP4WIN.