This is the UK/Orion R200SS 8" f/4 reflector. This is an awesome photo scope. All the glass/mirrors are in perfect condition. When I got this piece the tube had a dent near the focuser. I removed the optics and focuser and restored the tube to original condition. I replaced the "UK up side down" 1.25" focuser with a JMI NGF "US right side up" 2" focuser. I covered the inside of the tube with Edmond Scientific's "black out" material. The rings are original equipment and the base looks like it fits a GP mount however I used it on a G-11 with a modified plate. Has objective cap. No finder. Consider partial trade for zoom spotting scope.