Physics – Optics
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985kfnt....1...71v&link_type=abstract
Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 1, May-June 1985, p. 71-74. In Russian.
Physics
Optics
Astronomy, Atmospheric Correction, Atmospheric Optics, Atmospheric Refraction, Ellipsoids, Space Observations (From Earth), Atmospheric Density, Atmospheric Stratification, Azimuth, Geodesy, Latitude, Zenith
Scientific paper
Corrections to astronomical refraction are proposed in order to account for the ellipsoidal shape of the earth in astronomical observations. The corrections are based on two different aspects of the interaction of light rays with an ellipsoidal atmosphere: (1) the different angles at which light rays pass through an elliptically stratified atmosphere in comparison with a spherically stratified atmosphere, and (2) variations of atmospheric density due to the variations of gravity on the earth surface. The relationship between the proposed corrections and the latitude, azimuth, and zenith distance to the observed object is analyzed and the results are given. A correction of Z of less than 75 degrees is recommended for observations with a precision of 0.01 arcsec.
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