Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990esabu..61...21e&link_type=abstract
ESA Bulletin (ISSN 0376-4265), no. 61, Feb. 1990, p. 21-27.
Astronomy and Astrophysics
Astronomy
Infrared Space Observatory (Iso), Photoconductors, Spacecraft Instruments, Cameras, Focal Plane Devices, Mirrors, Polarimeters, Spacecraft Electronic Equipment, Spectrometers
Scientific paper
ESA's Infrared Space Observatory (ISO), scheduled for launch in 1993 by an Ariane-4 vehicle, into an elliptical orbit with an apogee of 70,000 km and a perigee of 1000 km, will enable astronomers to explore the most distant extragalactic sources, and will operate at wavelengths from 2.5 to 200 micron. The ISO payload consists of four scientific instruments: a camera (ISOCAM), an imaging photopolarimeter (ISOPHOT), a long-wavelength spectrometer (LWS), and a short-wavelength spectrometer (SWS). The cold focal-plane units of the scientific instruments are mounted behind the telescope's 60-cm diameter primary mirror. The silicon and germanium conductors are doped with different materials to achieve higher sensitivity for various wavelength ranges. Gold-coated mirrors, hard material lenses, filters, and beamsplitters are used as the highly functional optical elements of the focal-plane units. ISO will be operational for at least 18 months, and will be available to the general astronomical community.
Bagnasco Giorgio
Eggel Hans
Schaap Harm
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