For faint deepsky pictures with long total exposuretime Canon EOS camera’s are used. Either with or without the original built in visual filter. A remote wired controller is needed to run exposure times above 30 s. Preferably the camera is run from a PC with Cannon’s “Canon Remote capture software”. Runs of many shots of a few minutes each can the be run automatically and stacked later. DeepskyStacker can be used for stacking.
A Dutch manual relevant fort astro-photography: canon_eos_350d_handleiding_extract.pdf
For the time being 1¼” adapters are used for the 10“ until 2” sizes are available.