The Fabry-Perot interferometer prototype for the ADAHELI solar small mission
Francesco Berrilli ; Martina Cocciolo ; Luca Giovannelli ; et al. ; - ASI Sponsor
Oct - 2011
DOI: 10.1117/12.893552

Event Title : Solar Physics and Space Weather Instrumentation IV
Published in: Proceedings SPIE. Volume 8148. Imaging Spectroscopy
Publisher: SPIE
type: Conference Proceedings

DAHELI ADvanced Astronomy for HELIophysics is a solar satellite designed to investigate the fast dynamics of the solar photosphere and chromosphere performing visible and NIR broad-band and monochromatic observations of selected atomic lines. ADAHELI is an Italian Space Agency (ASI) project, approved for a feasibility study within the ASI Small Missions call. ISODY Interferometer for SOlar DYnamics is a Gregorian telescope and its focal plane suite (FPS). The FPS is composed of a high-resolution fast acquisition system, based upon a tandem of Fabry-Pérot interferometers operating in the visible and NIR regions on selected solar atmospheric lines, a broad band channel, and a correlation tracker used as image stabilization system. In this contribution we describe the Fabry-Pérot étalon prototype, based on the capacitance-stabilised concept, realized in our laboratory to perform preliminary mechanical and optical tests with a view to a future Fabry-Pérot étalon prototype for space application

keywords : Astronomy ; Capacitance ; Fabry–Perot interferometers ; Interferometers ; Near infrared ; Optical testing ; Satellites ; Telescopes