Lenses Lab: Building Telescopes
Channel: Undergrad Physics at UPenn
Date: 05/04/2020

This video was made for the Refraction and Thin Lenses Lab for PHYS 102 and PHYS 151. 
A Keplerian and Galilean telescope are constructed on a table top using simple lenses. 

The video begins a ray optics explanation of A Keplerian telescope. A pair of converging lenses are then focused on a shared point to create a working telescope. After a ray optics description of a Galilean telescope, the converging eyepiece of the telescope is replaced by a diverging lens. The length of the telescope is then adjusted until it becomes a working telescope again.