Want an inexpensive 5000mm telephoto?
Digiscoping is using a digital camera and a spotting scope as a super-telephoto lens. Originally, it was mostly used for photographing birds, although the combination can also be used for low-end astrophotography, or any other time you want a lot of zoom. Some DI forum members have tried digiscoping with binoculars: /forum/remark,7909293~mode=flat This is a good introduction with lots of links: Digiscoping. Some people who are doing it: »kotisivu.mtv3.fi/mr/ds/ds_combinations.htm …and for the hardy, some mathematics.
