Title :
A differential radiometer for mm wavelengths
Author :
Piccirillo, L. ; Calabresi, M. ; Zucchetti, M.
Author_Institution :
Istituto Superiore PT, Rome, Italy
Abstract :
The performance of an antenna system operating at millimeter wavelengths is discussed. Results from several measurements under different test conditions are presented. The antenna was used to make observations from Antarctica of the diffuse sky emission at 94 GHz. The instrument was used with the 94-GHz detector during the 1989/90 Italian Antarctica Expedition. Emission from both the Small and the Large Magellanic Cloud was observed, indicating the presence of a very cold dust component (15 K) coexisting with the warm dust detected by the IRAS satellite. A different run of measurements was dedicated to the emission of the Galactic plane. Again a strong emission was detected, indicating the presence of a similar cold dust component.<>
Keywords :
Large Magellanic Cloud; Small Magellanic Cloud; cosmic dust; interstellar matter; radioastronomical observations; radiometers; radiotelescopes; 15 K; 94 GHz; Antarctica; Galactic plane; Italian Antarctica Expedition; Large Magellanic Cloud; Small Magellanic Cloud; antenna system; cold dust component; differential radiometer; diffuse sky emission; mm wavelengths; warm dust; Antarctica; Antenna measurements; Clouds; Detectors; Instruments; Millimeter wave measurements; Radiometry; Satellite broadcasting; Testing; Wavelength measurement;
Conference_Titel :
Microwave Symposium Digest, 1992., IEEE MTT-S International
Conference_Location :
Albuquerque, NM, USA
Print_ISBN :
0-7803-0611-2
DOI :
10.1109/MWSYM.1992.188263
