Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ssrv...29..319t&link_type=abstract
(Schweizerische Naturforschende Gesellschaft and Eidgenoesische Technische Hochschule Zuerich, Conference on Solar Physics from
Astronomy and Astrophysics
Astronomy
3
Grist (Telescope), Spatial Resolution, Spectroheliographs, Ultraviolet Astronomy, Elastic Deformation, European Space Agency, Focal Plane Devices, Photoelectric Cells, Solar Instruments, Spectral Resolution, Stigmatism
Scientific paper
The Grazing Incidence Solar Telescope (GRIST) as it is being studied by the European Space Agency (ESA) is briefly described: it is an extreme ultraviolet facility for solar observation with 1 arcsec spatial resolution in the wavelength range from 9 to 120 nm. Two examples of focal plane instruments are illustrated: a normal-incidence stigmatic spectrograph using a toroidal grating recorded on an elastically deformed surface and a grazing-incidence stigmatic spectrograph using two toroidal elements: a mirror and a grating. If coupled with suitable array-type photoelectric detectors such spectrographs are capable of recording spectroheliograms in a very short time.
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