Optical design for a Fabry-Perot image interferometer for solar observations

Abstract

We outline here a preliminary optical design study for a telecentric tunable Fabry-Perot etalon system. The first result of the optical optimization into a design, which delivers performance image quality and telecentricity, is presented here. Bearing in mind the possible use of such a study design - as a possible instrument for the Advanced Technology Solar Telescope (ATST) - we also show that a hybrid design strategy delivers a compact design that will fit inside the ATST's Coude optical tables.