For pictures like the ones above you don't need an expensive set up. A steady tripod with a bucket of sand hanging in the middle to keep it as still as possible is a good starting point. Any DSLR will do the job. Ok mine is a Nikon D300 but a entry level Canon or similar will do just fine as well. For these shots I used a cheap 800 mm f/8 mirror lens and made a extension tube for it that effectively turns it into a 2400 mm lens. Ok I mounted mine o the top of the telescope but you can for moon shots just use a normal tripod.
At the moment I am working on adapting a HD webcam so that I can fit it into the eye pice of my 5" reflector telescope for planetary and deep space imaging and that should turn out some good results when i finish it.
If you know in what direction to look, you can actually have some fun with just a pair of binoculars and make out the rings of saturn and some of the larger moons of jupiter. Jupiter is just above the horizon due west at the moment
have a look around the net as there is some free software around that will give you an idea as to what you can find where and at what times.
If you rather just look at pictures of our planets and deep space that have been taken by hobby astronomers then have a look on Astrobin .......the photobucket of the looking up folks
http://www.astrobin.com/ATB
Michael
