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Proceedings Paper

UIST: an imaging spectrometer for the UK Infrared Telescope
Author(s): Suzanne K. Ramsay-Howat; Eli Ettedgui-Atad; Richard J. Bennett; Alan Bridger; Robert Content; Maureen A. Ellis; Peter R. Hastings; Mel Strachan; Robert Wall; Martyn Wells
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Paper Abstract

An imaging spectrometer is being designed to take advantage of recent improvements in the image quality achieved at the UK Infrared Telescope. The realization of near-diffraction limited imaging at two microns brings with it the possibility of significant improvements in sensitivity to IR observations. UIST will provide a versatile facility for high spatial resolution imaging and spectroscopy in the 1-5 micrometers wavelength range. We will present the opto-mechanical design of this new instrument, highlighting the innovative features. These include provision of multiple pixel scales within the camera and polarimetry via a Wollaston prism. One of the most challenging areas of the design is the inclusion of a cryogenic integral field unit for area spectroscopy over a 5 inch field. The spectroscopic modes include cross- dispersed spectroscopy over the complete 1-2.5 micrometers wavelength ranges and moderate resolution long slit or area spectroscopy over the complete 1-5 micrometers range. A higher resolution mode will also the included. This will allow USTI to take advantage of the very low backgrounds to be found between OH sky lines. The instruments will incorporate a 1024 X 1024 Indium Antimonide array from SBRC. The development of the IR array controller for UIST will also be discussed.

Paper Details

Date Published: 21 August 1998
PDF: 12 pages
Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); doi: 10.1117/12.317272
Show Author Affiliations
Suzanne K. Ramsay-Howat, Royal Observatory Edinburgh (United Kingdom)
Eli Ettedgui-Atad, Royal Observatory Edinburgh (United Kingdom)
Richard J. Bennett, Royal Observatory Edinburgh (United Kingdom)
Alan Bridger, Royal Observatory Edinburgh (United Kingdom)
Robert Content, Univ. of Durham (United Kingdom)
Maureen A. Ellis, Royal Observatory Edinburgh (United Kingdom)
Peter R. Hastings, Royal Observatory Edinburgh (United Kingdom)
Mel Strachan, Royal Observatory Edinburgh (United Kingdom)
Robert Wall, Royal Observatory Edinburgh (United Kingdom)
Martyn Wells, Royal Observatory Edinburgh (United Kingdom)

Published in SPIE Proceedings Vol. 3354:
Infrared Astronomical Instrumentation
Albert M. Fowler, Editor(s)

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