Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ntoi..307..549l&link_type=abstract
(Royal Society, Discussion on New Techniques in Optical and Infrared Spectroscopy, London, England, Apr. 21, 22, 1982.) Royal So
Astronomy and Astrophysics
Astronomy
Astronomical Spectroscopy, Spaceborne Astronomy, Spaceborne Telescopes, Spectrographs, Faint Object Camera, High Resolution, Stellar Magnitude, Ultraviolet Spectra
Scientific paper
The Space Telescope will provide views of the Universe of remarkable clarity. Central to its capabilities is an f/24 Ritchey-Chretien telescope with 40,000 sq cm unobscured collecting area, which will provide point-source images less than 0.1 sec in radius at wavelengths below 633 nm. It will operate over the range 110 nm to 1 mm. The initial flight instrumentation includes two spectrographs, the Faint Object Spectrograph (F.O.S.) and the High-Resolution Spectrograph (H.R.S.). The F.O.S. is sensitive from 115 to 800 nm. It will provide data at resolving powers 1000-100 on extremely faint sources. The H.R.S. operates at the wavelengths 107-320 nm. It will achieve high photometric accuracy at resolving powers 100,000, in the echelle mode, or 10,000-1000 in first order, on brighter targets. The two cameras on board the Space Telescope will provide ancillary spectroscopic capabilities.
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