White light coronagraph in OSO-7

Details White light coronagraph in OSO-7 White light coronagraph in OSO-7

Mar 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apopt..14..743k&link_type=abstract

Applied Optics, vol. 14, Mar. 1975, p. 743-751.

Physics

Optics

26

Coronagraphs, Optical Measuring Instruments, Oso-7, Satellite-Borne Instruments, Solar Instruments, Data Systems, Radiation Detectors, Recording Instruments, Transient Response, Vidicons

Scientific paper

A small, externally occulted Lyot-type coronagraph, designed for use in the seventh unmanned Orbiting Solar Observatory (OSO-7), is described. The optical configuration, suppression of stray light, SEC vidicon detector, and data system are discussed, as well as integration of the instrument into the spacecraft and operation in orbit. Orbital operation produced daily images of the white-light corona, from 2.8 to 10 solar radii, at least once per day for 2.75 yr. The first records of white-light coronal transient events were obtained, and the corona was shown to be constantly changing.

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