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The ESA project for a Grazing Incidence Solar Telescope (GRIST)

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Abstract

The Grazing Incidence Solar Telescope (GRIST) as it is being studied by the European Space Agency (ESA) is described: A soft X-ray and extreme-ultraviolet (XUV) facility for solar observations with 1 arc sec spatial resolution in a wavelength range extending from 9 to beyond 100 nm. The telescope, a 35° sector of a Wolter, type-II, configuration, will have a focal length of 4 m and a collection area of 280 cm2.

It is planned that GRIST be flown on joint Spacelab flights with the Solar Optical Telescope (SOT), a NASA facility for the wavelength range, 110 nm to 1 μm, which affords a 0.1 arc sec spatial resolution. This would render possible synoptic observations of the solar atmosphere with the highest ever achieved spatial resolution at wavelengths between 9 nm and 1 μm.

Possible focal-plane instruments and the most important research goals are briefly described.

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Authors and Affiliations

  1. Swiss Federal Institute of Technology Zürich, Institute of Astronomy, ETH-Zentrum, CH-8092, Zürich, Switzerland

    Martin C. E. Huber

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  1. Martin C. E. Huber
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Proceedings of the 14th ESLAB Symposium on Physics of Solar Variations, 16–19 September 1980, Scheveningen, The Netherlands.

On behalf of the ESA Consultants for the Phase-A Study of GRIST: A. H. Gabriel, U. Grossmann-Doerth, M.C.E.H., M. Malinovsky-Arduini, G. Tondello, and H. F. van Beek.

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Huber, M.C.E. The ESA project for a Grazing Incidence Solar Telescope (GRIST). Sol Phys 74, 539–542 (1981). https://doi.org/10.1007/BF00154537

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