Stellar chopping photometry in auroral regions

Details Stellar chopping photometry in auroral regions Stellar chopping photometry in auroral regions

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....84..297m&link_type=abstract

Astronomy and Astrophysics, vol. 84, no. 3, Apr. 1980, p. 297-299. Research supported by the Universitetet i Tromso.

Astronomy and Astrophysics

Astrophysics

5

Astronomical Photometry, Auroral Zones, Infrasonic Frequencies, Photometers, Stellar Spectrophotometry, Ubv Spectra, Ultraviolet Filters

Scientific paper

A stellar chopping photometer constructed to overcome the difficulties of variable sky background imposed by the aurora is described. The frequency of the chopper ranges from 1 Hz to 20 Hz, and even at the lowest frequency most of the errors imposed on the star measurements by the variable sky background were eliminated. The background sky was on the average equal to 18-19 m star/sq arcsec in the V band, varying by several magnitudes in the course of few seconds.

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