Some Dude With A Mak- Cass

I'm trying to pick out a good camera for astrophotography. It needs to be cheap, which I know means reduced quality, but this camera is just so I can decide if I want to pursue astrophotography further. I want to be able to image both planetary and deep space with it, but most cameras are really one or the other, so if I can only have one I'll take planetary. Also, I'd love some basic tips and advice that will make this easier. I have a few questions, but the one I most want an answer to is about camera types. There are a bunch of different kinds, and I don't know what the difference is. I Googled it but Google only confused me more, which seems like a bad sign to me XD. Finally, I'm using a Celestron Skyprodigy 90 Mak- Cass. From what I've heard, Mak- Cass scopes aren't great for astrophotography, but I don't remember why. (It's been at least 5 months since I used my scope last, because of how cold and long winter is where I live.) Thanks for your help!