Statistics – Computation
Scientific paper
Dec 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981stin...8224156.&link_type=abstract
Unknown
Statistics
Computation
Digital Techniques, Electro-Optical Photography, Polarimeters, Solar Instruments, Solar Observatories, Charge Coupled Devices, Data Reduction, Heliostats, Microwave Sensors, Optical Measuring Instruments, Refracting Telescopes
Scientific paper
Microwave polarimeters, data acquisition and processing equipment, and optical observing equipment are described. Observation results are summarized. The polarimeters use heterodyne receivers. With an integration time of 0.1 sec, system temperatures between 500 and 1000 K and antenna beam widths between 1 and 3 deg, solar intensity fluctuations of approximately 0.1% to 0.6% of quiet Sun level can be detected under good atmospheric conditions. A dynamic range of 100 between the maximum unsaturated burst registration and the quiet Sun level is achieved by a fast electronic 10 dB attenuator inserted during very strong events. An electro-optical registration system based on a CCD camera achieves correlation of photographic observations with microwave data on flares. Digital registration simplifies data storage and reduction, allowing interactive computation of parameters such as spectral indices and correlations.
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