Herschel, John F. W. (John Frederick William), Sir, 1792-1871 · London : Longman, Rees Orme · leaf 68
nwith his meridian will be his meridian line, and n and 5the north and south points of his horizon.. .(94.) Again, neglecting the size of the earth, orconceiving him stationed at its centre, and referringevery thing to his rational horizon; let the annexedfigure represent the sphere of the heavens;… … depressed poles of the heavens; HP the altitude ofthe pole, and H P ZE O his meridian ; ETQ, a greatcircle perpendicular to Vp, will be the equinoctial;and if f represent the equinox, f T will be the rightascension, T S the declination, and P S the polardistance of any star or object S, referred to…
Astronomy
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