Far-infrared solar imaging from a balloon-borne platform

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Abstract

view Abstract Citations (18) References (45) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Far-infrared solar imaging from a balloon-borne platform Degiacomi, C. G. ; Kneubuehl, F. K. ; Huguenin, D. Abstract Mapping of the far-infrared brightness temperature in the solar atmosphere has been performed with a balloon-borne telescope at a height of 39 km on 1983 April 30. The instrumentation consists of a 60 cm Cassegrain telescope with liquid helium cooled bandpass filters at the wavelengths 50 μm, 80 μm, and 200 μm and a LHe-cooled bolometer. For the first time, complete maps of the solar disk at these wavelengths have been made. In active regions, temperature enhancements were observed of up to 75K at 50 μm, 100K at 80 μm, and 250K at 200 μm wavelength. The average increase of the brightness temperature is of the order of 60K in the upper photosphere as observed at 50 μm and 80 μm, and 150K in the low chromosphere as observed at 200 μm. Publication: The Astrophysical Journal Pub Date: November 1985 DOI: 10.1086/163675 Bibcode: 1985ApJ...298..918D Keywords: Astronomical Maps; Balloon-Borne Instruments; Brightness Temperature; Far Infrared Radiation; Infrared Imagery; Solar Atmosphere; Solar Activity; Solar Temperature; Telescopes; Solar Physics full text sources ADS |

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