Two-mirror telescopes: Cassegrain, Gregorian and variants
Telescope stats explained - skyatnightmagazine
Off-Axis Parabolic Mirror Selection Guide | Edmund Optics
Problems Focusing A Newtonian Telescope With a Camera - John's ...
Telescope Equations
Telescope Making - Wikibooks, open books for an open world
Simple Formulas for the Telescope Owner - Sky & Telescope - Sky ...
Two-mirror telescopes: Cassegrain, Gregorian and variants
Focal length - Wikipedia
Cassegrain reflector - Wikipedia
Heretic's Telescope Guide
How many great minds does it take to invent a telescope? | Aeon Ideas
Cassegrain formulas.
Simple Formulas for the Telescope Owner - Sky & Telescope - Sky ...
Telescopes for Astrophotography
Robs Telescope Page
Where can I buy hyperbolic mirrors? - ATM, Optics and DIY Forum ...
Chapter 36: Image Formation - ppt video online download
How Fast is Your Telescope?
Telescope Basics
Which Telescope is Best for Me? | Starizona
The Creative Science Centre - by Dr Jonathan P. Hare
Optical system of a telescope
Problems Focusing A Newtonian Telescope With a Camera - John's ...
2) Mirror Prescription/Design Formulas
Mirror Equation
