Infrared extinction at Sutherland

  • I. S. Glass
  • B. S. Carter
Conference paper
Part of the Lecture Notes in Physics book series (LNP, volume 341)


Measurements of the extinction coefficients per unit airmass in the JHKL (1.25, 1.65, 2.2 and 3.5 μm) bands are presented. The nightly values of the photometric zero-points have also been analysed. It is shown that there is large scatter and an annual variation in the J-H and K-L zero-points while that for H-K is very stable.


Extinction Coefficient Water Vapour Content Precipitable Water Vapour Extinction Curve Standard Star 
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  1. Carter, B.S., 1974.M.Sc. Thesis, University of Cape Town.Google Scholar
  2. Glass, I.S., 1985. Irish A.J., 17, 1.Google Scholar
  3. Manduca, A. & Bell, R.A., 1979.Publ. Astr. Soc. Pac. 91, 848.Google Scholar

Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • I. S. Glass
    • 1
  • B. S. Carter
    • 1
  1. 1.South African Astronomical ObservatorySouth Africa

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