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Can I invoke the standard statement which used to be used for freeware ;

You are, of course, welcome to consult and make use of my pages at will. However, if you have found them useful in any appreciable way, please consider sending a small disbursement (even something as small as 1 Euro/Pound/Dollar/etc. would be received with appreciation).

B. Daugherty, 31 MH, Portsmouth PO5 3JG, Britain.

Ultra-Violet Astronomy


After radio astronomy, the next 'new astronomies' were Ulra-Violet and X-ray (followed by Gamma Ray and then Infra Red). Because of atmospheric absorption, telescopes for these frequencies require detectors based in space.

Ultra-Violet occupies that part of the Electromagnetic Spectrum immediately above visible light (in terms of frequency). It is well-known that the ozone layer protects the Earth from an excess of this form of radiation.

Timeline of Research

  • 1946   A UV spectrometer carried aboard a V2 rocket
  • 1960s   UV instruments begian to be placed on satellites
  • 1978-1996   IUE - International Ultraviolet Explorer (ESA/UK)
  •   Hubble Space Telescope
  •   ROSAT
  •   EUVE - Extreme Ultraviolet Explorer

Research Fields

  • Corona
  • Comets
  • Ultra hot stars
  • Cores of active galaxies

IUE - International Ultraviolet Explorer

Crab Nebula

Big Red Spot on Jupiter