You've asked a huge question there
Depends on what you want to photograph.
Some hold a point and click camera up to the eyepiece of a dob (that's how I started) and get great photos of the moon. Others spend 10 of thousands of dollars and use cooled cameras on guided mounts to go deep into space.
What's your budget like? For a couple of grand you could get an EQ5 mount and an ED80 and be happy for years (or until aperture fever takes hold)!
Give us a little more of an idea of your interests and budget so we can help a bit more.
niko