14 September 1994 Initial cold ground tests of the Infrared Space Observatory (ISO) satellite payload
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The European Space Agency's ISO satellite is a liquid helium cooled space observatory for infrared astronomy. It will be launched for an 18 month mission in 1995 by the Ariane 4 rocket. The payload module contains a 60 cm telescope and 4 focal plane instruments covering the wavelength range 2.4 to 240 micrometers . During the first cold tests early in 1994, ISO's 2300 1 tank was partially filled with superfluid helium. The main purpose of this test was to check all the functions of the instruments and their compatibility in ISO's cryovacuum environment. In addition the straylight level caused by thermal emission of the cryostat's interior was measured by the focal plane instruments.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dietrich Lemke, Michel Anderegg, Catherine J. Cesarsky, Peter E. Clegg, Roger J. Emery, Mattheus WM de Graauw, Reinhard O. Katterloher, Martin F. Kessler, Harm Schaap, Bruce Miles Swinyard, Clemens N. Tilgner, Laurent G. Vigroux, Juergen Wolf, "Initial cold ground tests of the Infrared Space Observatory (ISO) satellite payload", Proc. SPIE 2268, Infrared Spaceborne Remote Sensing II, (14 September 1994); doi: 10.1117/12.185820; https://doi.org/10.1117/12.185820


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