Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mmsai..51..247b&link_type=abstract
Società Astronomica Italiana, Memorie, vol. 51, June 1980, p. 247-261.
Astronomy and Astrophysics
Astronomy
2
Data Recording, Radio Observation, Solar Radio Emission, Solar Spectra, Very High Frequencies, Calibrating, Data Reduction, Radio Spectra, Solar Instruments, Spectroheliographs, Standardization
Scientific paper
Replies from 16 observatories to a questionnaire about problems of single-frequency solar radio observations at metric wavelengths are discussed. The instruments used by the various observatories are described, including several spectrographs that allow for single-frequency data recording. The problems considered include the construction of composite dynamic spectra, absolute calibration techniques, galactic background subtraction, ground reflections, the coverage of a wide dynamic range, terrestrial interference, and data reduction. On the basis of the replies and comments received, it is concluded that observing techniques and data reduction methods must be improved and standardized, that new observation frequencies are necessary for better coverage of the metric spectrum, and that absolute calibration is the most difficult of the problems considered.
Borkowski Kazimierz M.
Zanelli C. A.
Zlobec Paolo
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