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INDEX OF THE DIAGRAM
O
SENW
Observer horizon, with south, east, north, west as cardinal points at S, E, N, W. Zenith
nadir
ZEZ' PZQP
NÊ NAAM Ô d m
prime vertical east celestial meridian north celestial pole south celestial pole celestial equator
QERW
Gop PN
(celestial ) ecliptic (path of the sun along zodiac)
G
altitude of pole star or latitude of the place. pole of the ecliptic first point of Libra
Equinoctial points first point of Aries ) solstitial points star, with its path Co-D, declination circle. Secondary to celestial equator or hour circle. Secondary to ecliptic altitude of star o zenith distance of star o declination of star o
Poo'p
& Eb Ab NON
Ꮋ
to 9
9
.
ZP
360° minus the hour angle of star o Flor FaQ obliquity of ecliptic (2310) Ho
celestial latitude of star o p FH celestial longitude of staro op Qo' right ascension of star o
point of culmination of star o
point of intersection of hour circle with horizon.
10.
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