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Proceedings Paper

Balloonborne Far-Ir Spectroradiometer
Author(s): G. Serra; G. Bellaiche; P. Encrenaz; J. M. Lamarre
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Paper Abstract

Pronaos, a two metre balloonborne submillimetre telescope, supported by CNES and designed by a French collaboration between CNRS institutes and CNES-CST is presented. This project is now approved and in a preliminary definition phase B. It is intended to provide a facility for long duration flights (more than 20 hours) for photometry and spectroscopy in the spectral range 80 micrometres to 1.5 millimetre. Two focal plane instrumentations are considered : 1) a multiband photometre device using He3 cooled bolometres and He4 cooled filters. 2) a submillimetre heterodyne spectrometre. The two-metre Cassegrain telescope, with a lightweight primary mirror has an equivalent focal ratio F/10. The telescope is pointed (accuracy of 5"rms) with a two stages stabilisation having a two axis sys-tem : 1) the azimuth orientation of the gondola provides from the decoupling with the balloon (ac-curacy of a few arc-minutes) and 2) an elevation/ cross-elevation gimbal.

Paper Details

Date Published: 18 September 1987
PDF: 4 pages
Proc. SPIE 0810, Optical Systems for Space Applications, (18 September 1987); doi: 10.1117/12.941528
Show Author Affiliations
G. Serra, CESR-CNRS/UPS (France)
G. Bellaiche, CNES-CST (France)
P. Encrenaz, Observatoire de Meudon (France)
J. M. Lamarre, LPSP-CNRS (France)


Published in SPIE Proceedings Vol. 0810:
Optical Systems for Space Applications
Hanspeter Lutz; Georges Otrio, Editor(s)

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