Two-dimensional visualization of 5-minute solar oscillations

Details Two-dimensional visualization of 5-minute solar oscillations Two-dimensional visualization of 5-minute solar oscillations

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mmsai..51..621c&link_type=abstract

(Società Astronomica Italiana, Convegno sulla Variabilita Stellare, 1st, Massalubrense, Italy, May 22-24, 1980.) Società Astrono

Astronomy and Astrophysics

Astronomy

Solar Oscillations, Spectrophotometry, Spatial Resolution, Spectrographs

Scientific paper

The use of a spectrophotometric apparatus to obtain instantaneous two-dimensional images of the solar disk with which to monitor solar oscillations of period approximately 5 minutes is discussed. The system used consists of a selective filter mounted in a spectrograph, which is capable of imaging a 400 x 400 arcsec area with a temporal resolution of 1.45 sec and a seeing-limited spatial resolution. The two-dimensional system has the advantages of a lack of disalignment effects and ease of solar tracking over the 5-min oscillation period with respect to conventional one-dimensional spectrophotometric methods. The system has been used to record oscillations in Na emission over the course of three hours.

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