You are not going to like this but with that budget you will not get into astrophotography.
Now the bad news is over there is no reaso why you can't get into afocal (through the eyepiece) or piggyback (mount your camera on the back of the scope for wide angle images) on a relatively modest mount/telescope.
I will leave the rest to the gurus on the site for the actual details.
Good to have you on board
