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Optical Engineering

Boston University's high-resolution near-infrared Fabry-Pérot spectrometer
Author(s): John Noto; Robert B. Kerr; Kolam Ng; Redgie S. Lancaster; Michael Dorin
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Paper Abstract

To take advantage of the large luminosity-resolution product of the Fabry-Pérot interferometer used in tandem with modest-aperture telescopes, a Fabry-Pérot interferometer has been developed that is widely adaptable to a variety of extended source observations. The instrument is designed for adaptability across a range of optical and near-IR (NIR) spectral lines from 550 to 1100 nm, which are characterized by a wide range of velocity distributions of the emitting species. The system features a twin-étalon configuration to provide an extended free spectral range and to enhance contrast when observations include bright reflected solar or twilight backgrounds. Although the optical path and all the optical elements of the system are readily accessible, the instrument is ruggedized for transportability and extended remote field operation once it is optically configured. State-of-the-art, modularly adaptable, proven detectors (GaAs photomultipliers, large CCDs, and germanium integrating detectors) are featured to optimize instrument sensitivity. Recently, a series of NIR observations were made at the Millstone Hill Incoherent Scatter Radar Facility, Westford, Massachusetts, in a single-étalon mode.

Paper Details

Date Published: 1 February 1994
PDF: 6 pages
Opt. Eng. 33(2) doi: 10.1117/12.155916
Published in: Optical Engineering Volume 33, Issue 2
Show Author Affiliations
John Noto, Boston Univ. (United States)
Robert B. Kerr, Boston Univ. (United States)
Kolam Ng, Cambridge Technology Partners (United States)
Redgie S. Lancaster, Boston Univ. (United States)
Michael Dorin, Boston Univ. (United States)

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