Prospect of space-based interferometry at EUV and soft X-ray wavelengths

Details Prospect of space-based interferometry at EUV and soft X-ray wavelengths Prospect of space-based interferometry at EUV and soft X-ray wavelengths

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1546..108w&link_type=abstract

In: Multilayer and grazing incidence X-ray/EUV optics; Proceedings of the Meeting, San Diego, CA, July 22-24, 1991 (A93-39658 15

Astronomy and Astrophysics

Astronomy

Extreme Ultraviolet Radiation, Spaceborne Astronomy, Stellar Spectrophotometry, X Ray Astronomy, Interferometers, Optical Reflection

Scientific paper

We review the current capabilities of high-resolution, spectroscopic, space-borne instrumentation available for both solar and stellar observations in the EUV and soft X-ray wavelength regimes, and describe the basic design of a compact, all-reflection interferometer based on the spatial heterodyne technique; this is capable of producing a resolving power (lambda/Delta-lambda) of about 20,000 in the 100-200 A region using presently available multilayer optical components. Such an instrument can be readily constructed with existing technology. Due to its small size and lack of moving parts, it is ideally suited to spaceborne applications. Based on best estimates of the efficiency of this instrument at soft X-ray wavelengths, we review the possible use of this high-resolution interferometer in obtaining high-resolution full-disk spectroscopy of the sun. We also discuss its possible use for observations of diffuse sources such as the EUV interstellar background radiation.

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