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Applied Optics

Applied Optics


  • Vol. 36, Iss. 24 — Aug. 20, 1997
  • pp: 6069–6075

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

Howard K. Roscoe, William H. Taylor, Jon D. Evans, Andy M. Tait, Ray Freshwater, Debbie Fish, E. Kimberly Strong, and Rod L. Jones  »View Author Affiliations

Applied Optics, Vol. 36, Issue 24, pp. 6069-6075 (1997)

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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.

© 1997 Optical Society of America

Original Manuscript: March 20, 1996
Revised Manuscript: October 10, 1996
Published: August 20, 1997

Howard K. Roscoe, William H. Taylor, Jon D. Evans, Andy M. Tait, Ray Freshwater, Debbie Fish, E. Kimberly Strong, and Rod L. Jones, "Automated ground-based star-pointing UV–visible spectrometer for stratospheric measurements," Appl. Opt. 36, 6069-6075 (1997)

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  1. H. K. Roscoe, R. A. Freshwater, R. Wolfenden, R. L. Jones, D. J. Fish, J. E. Harries, D. J. Oldham, “Using stars for remote sensing of the Earth’s stratosphere,” Appl. Opt. 33, 7126–7131 (1994). [CrossRef] [PubMed]
  2. J-P. Pommereau, F. Goutail, “Stratospheric O3 and NO2 observations at the southern polar circle in summer and fall 1988,” Geophys. Res. Lett. 15, 895–897 (1988). [CrossRef]
  3. H. K. Roscoe, J. A. C. Squires, D. J. Oldham, A. Sarkissian, J-P. Pommereau, F. Goutail, “Improvements to the accuracy of zenith-sky measurements of total ozone by visible spectrometers,” J. Quant. Spectrosc. Radiat. Transfer 52, 639–648 (1994). [CrossRef]
  4. H. K. Roscoe, “A star-pointing UV–visible spectrometer for polar stratospheric measurements,” in Proceedings of the First European Workshop on Polar Stratospheric Ozone Research, J. A. Pyle, N. R. P. Harris, eds. (Commission of the European Communities, Brussels, 1991), pp. 91–94.
  5. D. J. Fish, R. L. Jones, R. A. Freshwater, H. K. Roscoe, D. J. Oldham, J. E. Harries, “Total ozone measured during EASOE by a UV–visible spectrometer which observes stars,” Geophys. Res. Lett. 21, 1387–1390 (1994). [CrossRef]
  6. D. J. Fish, “Measurements of stratospheric composition using ultraviolet and visible spectroscopy,” Ph.D. dissertation (University of Cambridge, Cambridge, UK, 1994).
  7. M. Q. Syed, A. W. Harrison, “Ground based observations of stratospheric nitrogen dioxide,” Can. J. Phys. 58, 788–802 (1980). [CrossRef]

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