I worked with a chap who made his own. Some lenses and a 4" drainpipe which he could attach his 35mm camera or just part of a small telescope. We set it up on the front lawn and he talked about the stars all night.
We did get disturbed now and then when an alarm went off or the Queen came out with the corgis but the sky is so clear over Balmoral you didn't really need the set-up...