Elements of Astronomy, with Numerous Examples and Examination Papers

aberration angle subtended angular distance annual parallax apparent diameter atmosphere axis calculate called celestial equator celestial pole celestial sphere centre circle circular clock coincide comets crosses the meridian direction disc diurnal motion Dublin earth's orbit ecliptic ecliptic limit equal equator equinox error fixed stars Greenwich heavenly bodies heavens Hence horizon horizontal parallax inferior conjunction inferior planet interval Jupiter latitude light longitude lunar mean noon mean solar mean sun measured Mercury meridian altitude method miles moon's motion move Nautical Almanac nearly node observer opposite parallax parallel pendulum perpendicular point of Aries position precession radius rays refraction represent revolution revolve round right angles right ascension rotation round the earth round the sun satellites seen shadow sidereal day sidereal hours sidereal period solstice sun's declination superior planet surface synodic period telescope transit twilight velocity Venus vertical zenith distance