Refraction near the horizon

Details Refraction near the horizon Refraction near the horizon

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasp..102..796s&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 102, July 1990, p. 796-805.

Astronomy and Astrophysics

Astrophysics

4

Astrometry, Atmospheric Refraction, Sextants, Temperature Profiles, Astrophysics, Azimuth, Horizon, Solar Eclipses, Sunrise

Scientific paper

Variations in astronomical refraction near the horizon are examined. Sunset timings, a sextant mounted on a tripod, and a temperature profile are utilized to derive the variations in refraction data, collected from 7 locations. It is determined that the refraction ranges from 0.234 to 1.678 deg with an rms deviation of 0.16, and it is observed that the variation is larger than previously supposed. Some applications for the variation of refraction value are discussed.

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