Automated ground-based star-pointing UV–visible spectrometer for stratospheric measurements

Roscoe, Howard K.; Taylor, William H.; Evans, Jon D.; Tait, Andy M.; Freshwater, Ray; Fish, Debbie; Strong, E. Kimberly; Jones, Rod L.. 1997 Automated ground-based star-pointing UV–visible spectrometer for stratospheric measurements. Applied Optics, 36 (24). 6069-6075. https://doi.org/10.1364/AO.36.006069

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Abstract/Summary

A novel automated ground-based star-pointing spectrometer system has been constructed for long-term deployment in Antarctica. Similar to our earlier stellar system, a two-dimensional detector array measures the spectra of the star and the adjacent sky, so that auroral emission from the sky can be subtracted from the stellar signal. Some new features are an altitude–azimuth pointing mirror, so that the spectrometer does not move; slip rings to provide its power thereby avoiding flexing of cables and restriction of all-around viewing; and a glazed enclosure around the mirror to ensure protection from rain and snow, made from flat plates to avoid changing the focal length of the telescope. The optical system can also view sunlight scattered from the zenith sky. The system automatically points and tracks selected stars and switches to other views on command. The system is now installed at Halley in Antarctica, and some preliminary measurements of ozone from Antarctica are shown.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1364/AO.36.006069
Programmes:	BAS Programmes > Pre 2000 programme
ISSN:	0003-6935
Date made live:	03 Oct 2016 13:57 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/514696

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