Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.290..553k&link_type=abstract
In its Infrared Spectroscopy in Astronomy p 553-557 (SEE N90-19084 11-89)
Astronomy and Astrophysics
Astronomy
Design Analysis, European Space Programs, Infrared Space Observatory (Iso), Infrared Spectrometers, Infrared Telescopes, Infrared Radiation, Polarimeters, Short Wave Radiation, Wavelengths
Scientific paper
The Infrared Space Observatory (ISO), operating at wavelengths from 3 to 200 microns, is described. The satellite essentially consists of a large cryostat containing about 2300 litres of superfluid helium to maintain the telescope (primary mirror diameter of 60 cm) and the scientific instruments at temperatures between 2 K and 8 K. A pointing accuracy of a few arc seconds is provided by a three-axis-stabilization system. ISO's instrument complement consists of four instruments, namely: an imaging photo-polarimeter (3 to 200 microns), a camera (3 to 17 microns), a short wavelength spectrometer (3 to 45 microns) and a long wavelength spectrometer (45 to 180 microns). ISO's scheduled launch date is May 1993 and it is planned to be operational for at least 18 months.
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