Mis à jour : 9 déc. 2019
Another cluster photographed as a "secondary target" to end the night: Messier 39!
M39 is an open star cluster in the constellation of the Swan: Cygnus. You can see a blanket of stars in the background, with the cluster popping out.
M39 is one of the nearest clusters to Earth, after the Pleiades, the Beehive, and a couple others.
We only spent one hour on this target, and the result is pretty neat!
Camera: Canon 7D Mark II
Telescope: Orion 8" Astrograph f/3.9
Mount: Atlas EQ-G motorized Mount
Total Exposure Time: 1 hour
Exposure Time per frame: 3 minutes
20 lights - 15 Darks - 15 Bias
Locating Messier 39
Messier 39 is located in the busy constellation of Cygnus, and can be seen with binoculars and any telescope!
IC 5146 (The Cocoon Nebula) can be seen not far from M39, but you probably will not be able to see them both in the same field even with small binoculars.
This open cluster in Cygnus may seem like a boring target at first, but just one hour of imaging is enough to have a wonderful looking photo. The stars pop out really easily, the background is filled with smaller ones, and the processing is a breeze! This is a good example of why you should not skip less famous objects and try them anyway!
If you would like to get our image as a print or other, you can support us and see some options HERE