M11 - Open Cluster in Scutum

M11 is one of the densest open clusters known. It can be mistaken for a globular cluster. If we were located at its center, we would see hundreds of magnitude one stars (the brightness of Sirius). It was discovered by Gottfried Kirch in 1681 and Charles Messier added it to his catalog in 1764. M11 is commonly known as the Wild Duck Cluster because the v-shape of some of its stars resemble ducks flying in formation.
   
Telescope: Orion 10 in. f/4.7 Newtonian with Baader coma corrector
Camera: Modified Canon T4i (650D); ISO - 800; Raw capture
Mount: Losmandy G-11; guided with Orion SSAG on a Lumicon 50 mm finder scope
Exposures: 20 @ 3 min.
Processing:  Images were focused using the camera's live view function. The subframes were converted to tiff files using Canon's Digital Photo Professional software. They were aligned and combined in ImagesPlus. Final adjustments (Curves, slight cropping) were done in Photoshop.
Note:  Taken from my backyard observatory in southeastern Minnesota on 8/19/11. Temp: 50 F
   
Back to Index