Comparison of the Low-Resolution Mode of the GHRS and the High Resolution Modes of the FOS

Details Comparison of the Low-Resolution Mode of the GHRS and the High Resolution Modes of the FOS Comparison of the Low-Resolution Mode of the GHRS and the High Resolution Modes of the FOS

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ghrs.rept...66l&link_type=abstract

GHRS Instrument Science Report 066, 9 pages

Physics

Hubble Space Telescope, Hst, Space Telescope Science Institute, Ghrs, Goddard High Resolution Spectograph

Scientific paper

The wavelength region between 1150 Angstroms and 1900 Angstroms can be observed with the GHRS and the FOS with similar spectral resolution. The advantages of using either the GHRS with the G140L grating or the FOS with the G130H and G190H gratings are discussed. We address instrumental overheads, target acquisitions, sensitivity, scattered light, wavelength coverage, aperture sizes, and spectral resolution. In general, if observations at wavelengths below 1500 Angstroms are the prime scientific goal, the GHRS is more sensitive and has better spectral resolution. At longer wavelengths, the FOS will give better scientific return.

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