An EUV imaging spectrograph for high-resolution observations of the solar corona

Details An EUV imaging spectrograph for high-resolution observations of the solar corona An EUV imaging spectrograph for high-resolution observations of the solar corona

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992soph..137...87n&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 137, Jan. 1992, p. 87-104.

Physics

62

Extreme Ultraviolet Radiation, Imaging Spectrometers, Solar Corona, Spectral Resolution, Gratings (Spectra), High Resolution, Soho Mission, Spectroheliographs, Ultraviolet Spectroscopy

Scientific paper

An extreme ultraviolet (EUV) imaging spectrograph for the wavelength range from 235 to 450 A has been developed and used for resolution observations of the sun. The instrument incorporates a glancing incidence Wolter Type II Telescope and a near-normal incidence toroidal grating spectrograph to achieve near-stigmatic performance over this spectral range. The design of the spectrograph entrance aperture enables both stigmatic spectra with spectral resolution adequate to observe emission line profiles and spectroheliograms of restricted portions of the sun to be obtained concurrently. The design and performance of the instrument are described, and an overview of results obtained during a sounding rocket flight on May 5, 1989 is provided.

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