Just in case you don't have your credit card fully locked up...
High Point Scientific (sort of a B&H of telescopes) has the Celestron AV-X mount on sale for $699. It's a very good entry level equatorial mount which is the type needed for astrophotography.
https://www.highpointscientific.com/celestron-advanced-vx-equatorial-mount-91519
The examples here (Andromeda Galaxy, The Pleiades, Orion Nebula) were taken using:
Celestron AV-X mount
Sky Watcher 8 inch Quatro reflector telescope (800mm focal length @ f/3.9)
Baader MPCC coma corrector
Celestron SkyPortal WiFi wireless adapter
iPad with Sky Safari Pro app.
Sony a7r2 with an appropriate adapter
Velo intervalometer
Note that post processing is just as important and involved as the photography itself. Generally you take many short exposures (30 to 60 seconds each) and stack them together to reduce noise which allows you to bring out subtle dark details. These are probably three of the easiest targets because they're big and bright (about the size of the full moon).
I plan to pick up a Canon adapter and try some with my Cambo / IQ4-150 but with the current live view design I don't think I'd be able to focus. I also expect to get a lot of vignetting so it's more of a curiosity at this point.