21 August 1998 Design of the South Pole imaging Fabry-Perot interferometer (SPIFI)
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Proceedings Volume 3354, Infrared Astronomical Instrumentation; (1998); doi: 10.1117/12.317274
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States
Abstract
The South Pole Imaging Fabry-Perot Interferometer (SPIFI) is a direct detection, imaging, submillimeter spectrometer. The spectral resolving elements are a pair of cryogenic, scanning Fabry-Perot interferometers which use a free- standard Ni mesh for the etalon mirrors. The detectors for SPIFI are a 5 X 5 array of bolometers coupled to the focal plane with Winston cones. An adiabatic demagnetization refrigerator cools the bolometers to approximately 60 mK while a 3He system operates simultaneously as a thermal guard. SPIFI is intended to operate on the ASO/RO submillimeter telescope at the South Pole and on the JCMT telescope on Mauna Kea and will be used to study the gas- phase reservoirs of carbon in star-forming regions in our own and near-by galaxies. SPIFI takes advantage of three things: (1) Advanced bolometers that achieve background limited performance at very high resolving powers. (2) The imaging capability and high spectral resolving power of Fabry-Perot interferometers. (3) The superb atmospheric transmission in submillimeter bands possible from the South Pole. The SPIFI uses state-of-the-art monolithic silicon bolometers fabricated at the NASA Goddard Space Flight Center. The cryogenic, scanning Fabry-Perots in SPIFI were designed and built at Cornell and are an evolution of the design used with great success for the Kuiper Wide Field Camera. The 1.7 m Antarctic Submillimeter Telescope/Remote Observatory exploits what is thought to be the best submillimeter observing site in the world.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mark R. Swain, Charles M. Bradford, Gordon J. Stacey, A. D. Bolatto, James M. Jackson, Maureen L. Savage, Jackie A. Davidson, "Design of the South Pole imaging Fabry-Perot interferometer (SPIFI)", Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); doi: 10.1117/12.317274; http://dx.doi.org/10.1117/12.317274
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KEYWORDS
Bolometers

Fabry–Perot interferometers

Spectral resolution

Mirrors

Fabry–Perot interferometry

Information operations

Spectroscopy

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