Computer Science
Scientific paper
Oct 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979stin...8025265g&link_type=abstract
Presented at the DOE Div. of Distributed Solar Technol. Insulation Assessment Constractor's Program Rev., Bethesda, Md., 31 Oct.
Computer Science
Circumsolar Radiation, Pyranometers, Pyroheliometers, Solar Instruments, Spectroscopic Telescopes, Digital Data, Scanners, Solar Energy, Tracking (Position)
Scientific paper
Four instrument systems called Circumsolar Telescopes, used to measure the solar and circumsolar radiation for application to solar energy systems, employ lenses or mirrors to concentrate the incident sunlight. Each measuring system has a scanning telescope mounted on a precision solar tracker. The telescope is mechanically scanned thru an arc of 6 deg with the sun at the center of the arc. A digitization of the brightness of the sun or circumsolar radiation is taken every 1.5 min. of arc, with a complete scan taking one minute of time. Auxiliary instruments include a pyroheliometer and two pyranometers, one mounted in the usual horizontal position and one tracking the sun. The telescope and pyroheliometer have batched ten position filter wheels: one open position, eight interference filters that divide the solar spectrum into eight intervals of roughly equal energy content, and one opaque filter to monitor detector noise. The data are recorded on magnetic tape, with one tape holding one week's worth of data per telescope.
Evans Dafydd
Grether D. F.
Hunt Andrew
Wahlig M.
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