A family of 2 mirror unobscured wide field telescope and collimator designs

Richard F. Horton

ad hoc Optics LLC, 317 Hathaway Circle, Mid Valley Air Park, Los Lunas, NM 87031

RFHorton7@aol.com

Abstract

A new family of 2 mirror unobscured telescopes of compact “Schiefspiegler”, off axis Cassegrain geometry,

incorporating aspheres, tilted and decentered secondary, and tilted focal surfaces, will serve as fast, high resolution,

moderately wide field telescopes / collimators. Designs range from f/5 to f/16. The nCUB designs provide a focal

surface normal to the gut ray for visual use. The tCUB designs provide collimator telescopes with focal surfaces tilted

so that any light reflected from the reticle is eliminated.

Keywords:

nCUB telescope system

2 mirror telescope, unobscured, off axis Cassegrain, schiefspeigler, tilted focal plane