A compendium of spherical astronomy with its applications to the determination and reduction of positions of the fixed stars (1906)
Newcomb, Simon, 1835-1909 · New York, The Macmillan company; London, Macmillan and co., ltd. · leaf 225
ant strata of theatmosphere are plane. We have now to consider more rigor-ously than before the effect of the curvature of the strataupon the refraction. In strictness the equiponderant surfacesshould be regarded as ellipsoidal, corresponding approximatelyto the figure of the geoid. It follows that… … Fm. 20. difference of curvature in different azimuths and differentlatitudes appreciably affects the refraction can only be deter-mined after the formulae for the amount of refraction have beendeveloped and reduced to numbers. It may, however, be re-marked that, since the observations for which a…
Spherical astronomy · Stars
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