Dave an I collaborated on a couple of images last night by connecting his stock APS-C sensored DSLR to my EON 130 using the 2″ to 1.25″ step-down compression fitting on the Crayford focuser. The smaller sensor and closer proximity to the focuser on the scope almost eliminated the vignette issues I have with my full frame sensor and soon-to-be-removed filter spacing when I image with my camera. We were going to initially try for the Helix Nebula, but the ambient wash from the moonlight and skyglow was a but much for that target, so we switched to 5 minute exposures on Messier 33. The image below is the result of about 30 subs and an old (inaccurate for this shutter length) master dark that Dave had laying around. 

The Triangulum Galaxy is a spiral galaxy approximately 3 million light-years from Earth in the constellation Triangulum. It is cataloged as Messier 33 or NGC 598, and is sometimes informally referred to as the Pinwheel Galaxy, a nickname it shares with Messier 101. The Triangulum Galaxy is the third-largest member of the Local Group of galaxies, which includes the Milky Way, the Andromeda Galaxy and about 44 other smaller galaxies. It is one of the most distant permanent objects that can be viewed with the naked eye.