Constancy of the refraction constant

Details Constancy of the refraction constant Constancy of the refraction constant

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ap%26ss.177..203h&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 177, no. 1-2, March 1991, p. 203-208. SNFO-supported research.

Astronomy and Astrophysics

Astronomy

6

Atmospheric Correction, Refractivity, Seeing (Astronomy), Astrometry, Least Squares Method, Night Sky

Scientific paper

The paper considers the determination of the flexure term and the correction to the calculated refraction constant, demonstrating that these quantities determined from the meridian circles and vertical circles are dominated by the internal refraction (INR). It was found that, when the INR was removed by a simple equipment at the CAMC on La Palma, the true flexure and the true correction to the calculated refraction constant varied very little (less than 0.09 arcsec) from nitht to night. Alternative forms for the observation equation that could be used for obtaining least-squares values of declinations from meridian observations independent on INR are discussed.

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