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Proceedings Paper

Integration and testing of the UKIRT imaging spectrometer (UIST)
Author(s): Suzanne K. Ramsay-Howat; Maureen A. Ellis; David C. Gostick; Peter R. Hastings; Mel Strachan; Martyn Wells
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Paper Abstract

We present results on the integration and testing of an imaging spectrometer for the 1-5micrometers wavelength band. UIST offers high angular resolution imaging and spectroscopy and has been designed to exploit the best performance of the UK IR Telescope. In addition to imaging with 0.24arcsec and 0.12arcsec resolution, long-slit and cross-dispersed spectroscopy, UIST has an integral field mode using a reflective image slicer. An image rotator allows the slits and the rectangular field of view of the IFU to be oriented at any position angle on the sky. The UIST optical design relies on refractive optics with the spectroscopy provided by both replicated and direct-ruled grisms. The lenses are mounted in mechanical modules which also contain the mechanisms, such as the filter and slit wheels. The integration of the opto-mechanical system will be discussed. The high tolerances on positioning the optical components to be used under cryogenic conditions are achieved by mechanical alignment on an optical bench which is an integral part of the instrument. Initial tests of the cryogenic performance of the optics will be presented. The UIST detector is an 1024 by 1024 InSb 'ALADDIN' array from the Raytheon IR Center of Excellence. The array controller is modified from 'EDICT', a VME processor based system which was developed at the UK ATC to control the mid-IR arrays used in the MICHELLE spectrometer. Progress on the integration of the UIST detector and controller will be discussed.

Paper Details

Date Published: 16 August 2000
PDF: 9 pages
Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); doi: 10.1117/12.395424
Show Author Affiliations
Suzanne K. Ramsay-Howat, Royal Observatory Edinburgh (United Kingdom)
Maureen A. Ellis, Royal Observatory Edinburgh (United Kingdom)
David C. Gostick, Royal Observatory Edinburgh (United Kingdom)
Peter R. Hastings, Royal Observatory Edinburgh (United Kingdom)
Mel Strachan, Royal Observatory Edinburgh (United Kingdom)
Martyn Wells, Royal Observatory Edinburgh (United Kingdom)

Published in SPIE Proceedings Vol. 4008:
Optical and IR Telescope Instrumentation and Detectors
Masanori Iye; Alan F. M. Moorwood, Editor(s)

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