A cooled optically servo-controlled infrared Fabry-Perot spectrometer.

Details A cooled optically servo-controlled infrared Fabry-Perot spectrometer. A cooled optically servo-controlled infrared Fabry-Perot spectrometer.

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984spie..445....2w&link_type=abstract

Instrumentation in astronomy V, p. 2 - 12

Astronomy and Astrophysics

Astronomy

Fabry-Perot Spectrometers

Scientific paper

A cooled optically servo-controlled infrared Fabry-Perot spectrometer has been constructed. The control system maintains both alignment and spacing of a tunable infrared etalon. An annular portion of the IR etalon is coated for control use at visible wavelengths. The spacing of the IR etalon then varies approximately linearly with the output wavelength of a visible control monochromator. The full range of the monochromator, typically 500 to 700 nm, corresponds to a change in etalon spacing. The movable plate of the IR etalon is positioned by an electromagnetic drive system. The instrument is planned to accommodate up to three IR etalons which can be scanned synchronously by tuning the output of a single control monochromator.

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