Hi Dennis,
Here are some long exposure images I have taken with my DMK through my C8 with a 2000mm FL. All the exposure times vary but are quite short from between 5 to 10 seconds with the set to maximum.
Pic 1 - 47 Tuc
Pic 2 - Tarantula Nebula
Pic 3 - Acrux (not sure?)
Pic 4 - M42
As you can see that for only very short exposure the DMK captures quite a lot of stars and nebulosity. I would like to see what the DMK can do with longer exposures and a shorter focal length so that might be a future project for me.
Hope this helps.
