PRONAOS: A submillimeter facility

Details PRONAOS: A submillimeter facility PRONAOS: A submillimeter facility

Publishing date

Aug 1987

URL

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987esasp.270..333s&link_type=abstract

Journals

In ESA, Proceedings of the 8th ESA Symposium on European Rocket and Balloon Programs and Related Research p 333-336 (SEE N88-162

Science

Physics

Field

Optics

Additional info 3

Balloon-Borne Instruments, Infrared Astronomy, Infrared Telescopes, Submillimeter Waves, Balloon Flight, Cassegrain Optics, Infrared Spectrometers, Photometers

Type

Scientific paper

Abstract

A 2 m balloon-borne submillimeter telescope, intended to provide a facility for long duration flights (greater than 20 hr) for photometry and spectroscopy in the spectral range 80 microns to 1.5 mm is presented. Focal plane instruments are: a multiband photometer device using He3 cooled bolometers and He4 cooled filters; and a submillimeter heterodyne spectrometer. The 2 m Cassegrain telescope, with a lightweight primary mirror has an equivalent focal ratio F/10. The telescope is pointed (accuracy 5 arc-sec rms) with a two-stage stabilization having a two-axis system: the azimuth orientation of the gondola from the decoupling with the balloon (accuracy of a few arc-minutes); and an elevation/cross-elevation gimbal.

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