Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986spie..627..375h&link_type=abstract
IN: Instrumentation in astronomy VI; Proceedings of the Meeting, Tucson, AZ, Mar. 4-8, 1986. Part 1 (A87-36376 15-35). Bellingha
Astronomy and Astrophysics
Astronomy
19
Extreme Ultraviolet Radiation, Far Ultraviolet Radiation, High Resolution, Spaceborne Telescopes, Ultraviolet Spectrometers, Aberration, Gratings (Spectra), Reflecting Telescopes, Rowland Circles, Space Platforms
Scientific paper
The authors have considered various designs for a high resolution spaceborne spectrometer for point-source astronomy in the 400 - 1200 Å wavelength region. Their designs utilize as the primary collecting optic a 1-meter normal incidence primary mirror of 1arcsec quality. The authors find the most efficient design to be a multiple Rowland circle spectrograph, with four toroidal gratings each intercepting a fraction of the beam from the primary mirror. The specific parameters of the design (line densities, detector size and pixel size, etc.) are dependent on the drift rate of the space platform. The authors present a design optimized for an uncorrected drift of 4arcsec. This design delivers a resolution of 3000 - 4000 and an effective area (including detector quantum efficiency) of 1 to 6.5 square centimeters across the bandpass.
Bowyer Stuart
Hurwitz Mark
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