Yes, that 9 inch TMB is a very impressive scope...it's a beast to get up on the mount (definitely a 2 person job). That's an Astrophysics 900GTO mount it's on...also a very fine piece of astro equipment. A person could do some incredible astrophotography with that setup, but my friend is really only interested in visual observing.....and to a great extent I agree....nothing like seeing stunning views of the Orion Nebula etc with your own two eyes!
Depending on a person's interests, I think a good alternative to buying a long telephoto lens to use for this sort of astrophotography (500mm etc) is the purchase of a good quality refractor telescope. Here's a photo I took of the moon on the same night as the image above, but the Canon D60 was attached to my Televue Pronto small refractor 70mm/f6.8 (focal length of 480mm).
I'm now thinking my Panny G1 would be a good camera to use for astrophotography....I just need to get the right adapter to hook it up to my Televue Pronto or my slightly longer Stellarvue 80mm/f9.4 (focal length 750mm). The Stellarvue, which is an excellent and well made achromatic refractor, costs about $400. The Pronto is no longer made....somewhat of a classic now, with typically superb Televue quality optics (even though it is not apochromatic) and buttery smooth focusing.
Gary