Spherical Astronomy, Volum 1

A'cos aberration altitude angle apparent place argument arithmetical mean ascension and declination Astronomy atmosphere axes azimuth Bessel calculation Cambridge centre circle computation cos & cos cos B sin cos² cosine cotan culmination daily motion denote Diff difference of right differential coefficients earth ecliptic Edition employed epoch equal equation example expression fixed ecliptic fixed stars formulæ FORMULE OF SPHERICAL function fundamental plane given heavens horizon hour-angle interpolation logarithms longitude and latitude mean place meridian multiplied nutation obliquity obtain Octavo parallax place of observation point of intersection pole positive axis precession proper motion quantities radius reckoned referred refraction right ascension semi-minor axis sidereal sidereal day sin² sine SPHERICAL TRIGONOMETRY system of co-ordinates tables tan² temperature transformation true variable vernal equinox zenith