[en] 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 Ro 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 × 10[SUP]4[/SUP] K to 3 × 10[SUP]6[/SUP] 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.
Disciplines :
Aérospatiale, astronomie & astrophysique
Auteur, co-auteur :
Delaboudinière, J.-P.; Inst. d'Astrophysique Spatiale, Université Paris XI
Artzner, G. E.; Inst. d'Astrophysique Spatiale, Université Paris XI
Brunaud, J.; Inst. d'Astrophysique Spatiale, Université Paris XI
Gabriel, Alan H.
Hochedez, Jean-François; Inst. d'Astrophysique Spatiale, Université Paris XI
Millier, F.; Inst. d'Astrophysique Spatiale, Université Paris XI
Song, X. Y.; Inst. d'Astrophysique Spatiale, Université Paris XI
Au, B.; Naval Research Laboratory
Dere, K. P.; Naval Research Laboratory
Howard, Russell A.; Naval Research Laboratory
Kreplin, R.; Naval Research Laboratory
Michels, D. J.; Naval Research Laboratory
Moses, J. D.; Naval Research Laboratory
Defise, Jean-Marc ; Université de Liège - ULiège > CSL : Direction générale - Satellites, missions et instruments spatiaux
Jamar, Claude ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Rochus, Pierre ; Université de Liège - ULiège > CSL (Centre Spatial de Liège) - Instrumentation et expérimentation spatiales
Chauvineau, J. P.; Institut d'Optique Théorique et Appliquée
Marioge, J. P.; Institut d'Optique Théorique et Appliquée
Catura, R. C.; Lockheed Palo Alto Research Laboratory
Lemen, J. R.; Lockheed Palo Alto Research Laboratory
Shing, L.; Lockheed Palo Alto Research Laboratory
Stern, R. A.; Lockheed Palo Alto Research Laboratory
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