The problem with this mount is not so much that it is Alt az, or the optics, but the mount and focuser. A friend of mine had this very same mount but with a 60mm refractor. The motors are very cheap and cog severely. At medium to high magnifications you can acutally see objects jump in the eyepiece as the mount tracks . After it jumps there is ever so slightly a vibration till it settles and then it jumps again, very distracting visually, impossible for imaging. The optical tube has a 1 1/4" focuser that is all plastic and will not support any camera's other than a solar system imager or a web cam.
Honestly, to get into astro imaging, expect to spend at least $500 or more on the mount. A celestron CG-5 GT or Meade LXD 75 would probably be the least expensive entry level mounts that I would recommend. Then you would still have to add an imaging optical tube such as the Orion 8" F 3.9 Astrograph reflector or an inexpensive refractor with a 2" focuser.
I am sure this is not what you wanted to hear. Astro Photography (AP) is not cheap. Many people think "I got a scope and I got a camera, I'm gonna take pictures." There are a lot of threads in the Astro Imaging Forum that cover some of the most important aspects of AP. Many of the contributors have been through the tough parts of getting started in AP, and have some very good information to share.