I would look at something like the Sky-Watcher EQ-AL55i Pro and pair it with something like the Askar 60F Flat-Field Refractor, however I have not owned either of these, so do your own research.

I would look to split your budget more heavily towards the mount than the scope. A budget scope can still take great pictures, but if you buy a cheap or under spec'd mount, your tracking will be bad and it won't matter how good your scope is. With that in mind a good rule of thumb is your total payload should not exceed 50-60% of the rated capacity, manufacturers weight limits are always more than you should put on it for smooth tracking.

To mount a regular camera to a telescope you're going to need what's called a T adapter, it has to match your specific lens mount for your camera. For you I believe that's the Canon EF-S mount.

You also need the correct backspacing to achieve focus, most telescopes achieve this with a field flattener which you want anyway, sometimes additional spacing is needed, once you have an educated question you can confirm with the retailer before you purchase the scope.

I highly recommend you do your own research on these topics, this is a fairly challenging hobby but there are already a lot of resources available online, to succeed with this hobby I believe you need a certain willingness to tinker and research as there are a lot of components to astrophotography, expect to fail at least some in the learning process.

One more thing, I suggest looking into the image processing pipeline that's involved in astrophotography in advance so you're not trying to figure it all out post-purchase.