M11: the Wild Duck

A rich open cluster in Scutum.

Images taken: T. Torma, Sept. 18, 2007.

Telescope: Meade 12 in at f/5.91 (f=71 in).

Camera: SBIG ST-10 CCD camera

Image size: 20 am x 30 am; resampled to 1 as/pix; North is up.

Exposures: 10 x 1 min in each of H-alpha, green, and blue filters; a total of 30 min exposure.

Image processing: CCDoops + CCDSoft + Photoshop CS.