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EIT: Extreme-ultraviolet Imaging Telescope for the SOHO mission

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Abstract

The Extreme-ultraviolet Imaging Telescope (EIT) will provide wide-field images of the corona and transition region on the solar disc and up to 1.5 R⊙ above the solar limb. Its normal incidence multilayer-coated optics will select spectral emission lines from Fe IX (171 Å), Fe XII (195 Å), Fe XV (284 Å), and He II (304 Å) to provide sensitive temperature diagnostics in the range from 6 × 104 K to 3 × 106 K. The telescope has a 45 x 45 arcmin field of view and 2.6 arcsec pixels which will provide approximately 5-arcsec spatial resolution. The EIT will probe the coronal plasma on a global scale, as well as the underlying cooler and turbulent atmosphere, providing the basis for comparative analyses with observations from both the ground and other SOHO instruments. This paper presents details of the EIT instrumentation, its performance and operating modes.

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Author notes

  1. W. M. Neupert

    Present address: SEL/NOAH, 325 Broadway, 80303, Boulder, CO

Authors and Affiliations

  1. Inst. d'Astrophysique Spatiale, Université Paris XI, 91405, Orsay Cedex, France

    J. -P. Delaboudinière, G. E. Artzner, J. Brunaud, A. H. Gabriel, J. F. Hochedez, F. Millier & X. Y. Song

  2. Naval Research Laboratory, 20375, Washington, DC, USA

    B. Au, K. P. Dere, R. A. Howard, R. Kreplin, D. J. Michels & J. D. Moses

  3. Centre Spatial de Liège, Liège, Belgium

    J. M. Defise, C. Jamar & P. Rochus

  4. Institut d'Optique Théorique et Appliquée, 91403, Orsay, France

    J. P. Chauvineau & J. P. Marioge

  5. Lockheed Palo Alto Research Laboratory, 94304, Palo Alto, CA, USA

    R. C. Catura, J. R. Lemen, L. Shing & R. A. Stern

  6. NASA/Goddard Space Flight Center, Greenbelt, MD, USA

    J. B. Gurman & W. M. Neupert

  7. Laboratoire d'Astronomie Spatiale, Marseille, France

    A. Maucherat

  8. Observatoire Royal de Belgique, Brussels, Belgium

    F. Clette, P. Cugnon & E. L. Van Dessel

Authors
  1. J. -P. Delaboudinière
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  2. G. E. Artzner
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  3. J. Brunaud
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  4. A. H. Gabriel
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  5. J. F. Hochedez
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  6. F. Millier
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  7. X. Y. Song
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  8. B. Au
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  9. K. P. Dere
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  10. R. A. Howard
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  11. R. Kreplin
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  12. D. J. Michels
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  13. J. D. Moses
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  14. J. M. Defise
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  15. C. Jamar
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  16. P. Rochus
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  17. J. P. Chauvineau
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  18. J. P. Marioge
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  19. R. C. Catura
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  20. J. R. Lemen
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  21. L. Shing
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  22. R. A. Stern
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  24. W. M. Neupert
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  25. A. Maucherat
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  26. F. Clette
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  27. P. Cugnon
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  28. E. L. Van Dessel
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Delaboudinière, J.P., Artzner, G.E., Brunaud, J. et al. EIT: Extreme-ultraviolet Imaging Telescope for the SOHO mission. Sol Phys 162, 291–312 (1995). https://doi.org/10.1007/BF00733432

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