Authored ByMike Tocci
An off-axis parabolic (OAP) mirror consists of a small section cut out from a larger, so-called “parent” parabolic mirror. Working with these mirrors, especially for the first time, can seem like a daunting task. However, with a little instruction and a bit of practice, OAPs can be fairly straight-forward to manipulate and very handy to use.
This article describes a real-life assignment that required an OAP to be used with an existing optical system.