1. The problem statement, all variables and given/known data Find the magnification of a 10" reflecting telescope with a focal length of 1250mm and a 250mm eyepiece. 2. Relevant equations 1/f=1/do+1/di M=hi/ho=-di/do 3. The attempt at a solution Not really sure where to start. If you could, please explain how you got the answer. Thanks for the help!