8 - 25 eV High Regolution Soler Spectrometer

P. Lemaire; K. Wilhelm

doi:10.1117/12.961871

27 November 1989 8 - 25 eV High Regolution Soler Spectrometer

P. Lemaire, K. Wilhelm

Proceedings Volume 1140, X-Ray Instrumentation in Medicine and Biology, Plasma Physics, Astrophysics, and Synchrotron Radiation; (1989) https://doi.org/10.1117/12.961871
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France

Abstract

Solar UV and EUV spectroscopy in the 10 - 55 eV (135 - 25 nm) range with low spectral resolution (650 - 150 resolving power or 0.16 nm) and good angular resolution on the solar image (5 arcsec) has been very successful on ATM/SKYLAB. In combination with other solar experiments, this instrumentation has produced data which have permitted to make a major step in our understanding of the external atmospheric layers. In this wavelength range, since that experiment, no other solar instrumentation has produced results. We have studied the concept of a solar spectrometer in the 8 - 25 eV (or 160-50 nm) domain with 4.0-1.9x 10⁴ resolving power and one arcsecond angular resolution. Such a spectrometer uses a normal incidence mounting with stigmatic properties; the 300 arcsecond length entrance slit produces 300 simultaneous spectra onto the detector. This instrumentation (Solar Ultraviolet Measurement of Emitted Radiation - SUMER) has been selected to be part of the SOlar Heliospheric Observatory satellite (SOHO) approved by ESA and NASA. The description and the performances of the optical scheme are reported in this paper.

Citation Download Citation

P. Lemaire and K. Wilhelm "8 - 25 eV High Regolution Soler Spectrometer", Proc. SPIE 1140, X-Ray Instrumentation in Medicine and Biology, Plasma Physics, Astrophysics, and Synchrotron Radiation, (27 November 1989); https://doi.org/10.1117/12.961871

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