Mathematics – Logic
Scientific paper
Apr 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ncimc..13..529c&link_type=abstract
Nuovo Cimento C, Serie 1 (ISSN 0390-5551), vol. 13 C, Mar.-Apr. 1990, p. 529-535.
Mathematics
Logic
1
Background Radiation, Balloon-Borne Instruments, Extraterrestrial Radiation, Near Infrared Radiation, Cryogenic Cooling, Infrared Telescopes, Liquid Helium
Scientific paper
The design and operational characteristics of TRIP, a balloon-borne liquid-He-cooled telescope for cosmic-background measurements at 1-5 microns, are described. The importance of observations in the near-IR as constraints on cosmological models is explained, and the problems involved in balloon observations are reviewed, including residual atmospheric effects and thermal emission from dust particles. TRIP employs a focal-plane array of 32 InSb detectors operating at temperature about 50 K with a pixel FOV of about 1.4 arcmin. The TRIP optical telescope has a 252-mm F/2 primary mirror designed for operation at 40-100 K, a total FOV of about 49 arcmin, a maximum integration time of 1000 sec at 45 K, and a set of six filters covering the range 1.937-3.547 microns. A single TRIP run covering 360 deg in azimuth (in 30-deg steps) will take about 2 h.
Cortiglioni Stefano
Giovannini Gabriele
Mandolesi Nazareno
Morigi Gabriele
Ventura Giulio
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