Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Keplerian telescope

  1. Apr 3, 2006 #1
    i am to design a keplerian telescope with 7X magnification, 5mm exit pupil, and at least 10mm eye relief.

    I have one lens with focal length 35mm, another with focal length 5mm, giving a visual mag of 7X and the exit puiple is 5mm, but how do I account for the 10mm eye relief?
     
  2. jcsd
  3. Apr 4, 2006 #2
    basically, the thing I dont understand is how do I calcuate eye relief for an afocal system?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook