![Confused with scope focal length - what am I missing? - Beginners Forum (No Astrophotography) - Cloudy Nights Confused with scope focal length - what am I missing? - Beginners Forum (No Astrophotography) - Cloudy Nights](https://www.cloudynights.com/uploads/monthly_07_2016/post-29900-0-45377400-1469838557.jpg)
Confused with scope focal length - what am I missing? - Beginners Forum (No Astrophotography) - Cloudy Nights
![What should be the distance between secondary mirror and the eyepiece in Newtonian telescope? - Quora What should be the distance between secondary mirror and the eyepiece in Newtonian telescope? - Quora](https://qph.cf2.quoracdn.net/main-qimg-00b1d890da40aad050b69f187554f9d5.webp)
What should be the distance between secondary mirror and the eyepiece in Newtonian telescope? - Quora
![Colored engraving of Newton's reflecting telescope - Stock Image - R102/0056 - Science Photo Library Colored engraving of Newton's reflecting telescope - Stock Image - R102/0056 - Science Photo Library](https://media.sciencephoto.com/image/r1020056/800wm/R1020056.jpg)
Colored engraving of Newton's reflecting telescope - Stock Image - R102/0056 - Science Photo Library
![Reflecting Telescope | Definition, Advantages & Disadvantages - Video & Lesson Transcript | Study.com Reflecting Telescope | Definition, Advantages & Disadvantages - Video & Lesson Transcript | Study.com](http://study.com/cimages/videopreview/videopreview-small/screen_shot_2014-12-13_at_12.15.37_am_136815.jpg)