A Cassegrain telescope uses two mirrors as shown in figure. Such a telescope is built with the mirrors 20 mm apart. If the radius of curvature of the large mirror is 220
Work Log for 14 Mirror - The ATMs Workshop
Spherical vs. Parabolic Mirror Focal Regions
Building a large affordable optical-NIR telescope (I): an alternate way to handle segmented primary mirror
TELESCOPE MIRROR MAKING HOW TO PART 1: Rough Grinding
Telescopes
Telescopes
Cassegrain Formulas and Tips by Mike Lockwood
Sample manuscript showing specifications and style
Lightweighted telescope mirrors: Outstanding properties of Silicon Carbide