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Solar Physics

, Volume 162, Issue 1–2, pp 357–402 | Cite as

The Large Angle Spectroscopic Coronagraph (LASCO)

Visible light coronal imaging and spectroscopy
  • G. E. Brueckner
  • R. A. Howard
  • M. J. Koomen
  • C. M. Korendyke
  • D. J. Michels
  • J. D. Moses
  • D. G. Socker
  • K. P. Dere
  • P. L. Lamy
  • A. Llebaria
  • M. V. Bout
  • R. Schwenn
  • G. M. Simnett
  • D. K. Bedford
  • C. J. Eyles
Article

Abstract

The Large Angle Spectroscopic Coronagraph (LASCO) is a three coronagraph package which has been jointly developed for the Solar and Heliospheric Observatory (SOHO) mission by the Naval Research Laboratory (USA), the Laboratoire d'Astronomie Spatiale (France), the Max-Planck-Institut für Aeronomie (Germany), and the University of Birmingham (UK). LASCO comprises three coronagraphs, C1, C2, and C3, that together image the solar corona from 1.1 to 30 R (C1: 1.1 – 3 R, C2: 1.5 – 6 R, and C3: 3.7 – 30 R). The C1 coronagraph is a newly developed mirror version of the classic internally-occulted Lyot coronagraph, while the C2 and C3 coronagraphs are externally occulted instruments. High-resolution imaging spectroscopy of the corona from 1.1 to 3 R can be performed with the Fabry-Perot interferometer in C1. High-volume memories and a high-speed microprocessor enable extensive on-board image processing. Image compression by a factor of about 10 will result in the transmission of 10 full images per hour.

Key words

Sun Corona Coronagraph 

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Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • G. E. Brueckner
    • 1
  • R. A. Howard
    • 1
  • M. J. Koomen
    • 1
  • C. M. Korendyke
    • 1
  • D. J. Michels
    • 1
  • J. D. Moses
    • 1
  • D. G. Socker
    • 1
  • K. P. Dere
    • 1
  • P. L. Lamy
    • 2
  • A. Llebaria
    • 2
  • M. V. Bout
    • 2
  • R. Schwenn
    • 3
  • G. M. Simnett
    • 4
  • D. K. Bedford
    • 4
  • C. J. Eyles
    • 4
  1. 1.E. O. Hulburt Center for Space ResearchNaval Research LaboratoryUSA
  2. 2.Laboratoire d'Astronomie SpatialeMarseilleFrance
  3. 3.Max-Planck-Institut für AeronomieLindauGermany
  4. 4.Space Research Group, School of Physics and Space ResearchUniversity of BirminghamBirminghamU.K.

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