European Space Science and Space Station Freedom

Details European Space Science and Space Station Freedom European Space Science and Space Station Freedom

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992eocm.rept..285b&link_type=abstract

In ESA, Environment Observation and Climate Modelling Through International Space Projects. Columbus Eight (COSY-8): Utilisation

Astronomy and Astrophysics

Astrophysics

Astrophysics, Solar Physics, Space Station Freedom, Space Station Payloads, Spacecraft Instruments, Contamination, Degradation, Europe, Interferometers, Observatories, Schmidt Cameras, Ultraviolet Telescopes

Scientific paper

Six instruments for space sciences are presented as potential external payloads, which need accommodation on the Space Station Freedom (SSF) truss or on the Columbus Attached Laboratory (CAL) by means of a terrace or balcony: SUN (an interferometer with a baseline of 2m); ORFEUS (a stellar spectrometer); LOBSTER (a Large Angle Observatory for Bursts Supernova and Transient Event Researh); GAUSS (Galactic Ultrawide Schmidt System to feed a Schmidt camera); UTEF (Ultraviolet Telescope Facility); DUSTWATCH (a facility for exposing passive substrates and active particle detectors to the space environment). Three of them (ORFEUS, SUN, UTEF) require pointing platforms with 20 inch stability and capability of rotation around the line of sight. Two (GAUSS, LOBSTER) are satisfied with a pointing stability of 1 foot. For DUSTWATCH, SSF may be an acceptable platform. Two contamination aspects are of concern: degradation of ultraviolet (UV) coatings due to molecular deposition and increased background radiation due to local molecular and particulate scattaring and emission. The scientific objectives address forefront problems in a wide energy range from gamma rays, through X-rays and the extreme UV, down to the far UV and the UV. One instrument (SUN) is the European forerunner for UV imaging interferometry from space.

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