M39 Open Cluster

Messier 39 (M39) is a large open cluster located in the constellation Cygnus, the Swan. The cluster lies at a distance of 824.4 light years from Earth. The bright stars you can see form the loose, open cluster. The myriad faint stars in the background are in the Milky Way which you might see as a light streak across the sky on a clear dark night. It has the designation NGC 7092 in the New General Catalogue.

 

I couldn’t see any of these with my naked eye but my telescope assures me they are out there.

 

ZWO ASIAIR Pro

ZWO ASI 533MC Pro

ZWO EAF

Celestron C11-A XLT (not Edge HD)

SkyWatcher EQ6-R Pro

Tracking but no guiding. I haven't been able to get the guide camera in focus either with OAG or separate guidescope yet so I restricted my captured images to 30 seconds each to keep the stars round.

Captured in Live View, saving every frame:

58 Lights at 30 seconds, gain 100, temp -10C

20 Darks at 30 seconds, gain 100, temp -10C

40 Bias at 10.0ms, gain 100, temp -10C

 

Bortle 4 sky and a generic light pollution filter.

Integrated in Astro Pixel Processor and adjusted in Photoshop CS4.

Done