This is one of my astrophotography setups. The main scope is an Astro-Physics 155mm f/7 EDF APO refractor. For a camera I use an old, completely mechanical, Canon F-1 with a waist-level finder. Mounted on top of the A-P scope is a University Optics 80mm f/6.25 guide scope. An ST-4 Autoguider/CCD camera is used with the guide scope to keep the whole setup accurately aimed at a guide star during long exposures. The mount is a model 900 Astro-Physics German equatorial mount with DC stepper motors and polar alignment scope.