p e is the first meridian of longitude, and,of course, the angle E qp P is equal to the obliquity of theecliptic.The figure j^t s be the position of any celestial body, and draw the is considered •-,* . i • 7-» ii i • t transparent, meridian or right ascension Psp, also draw the meridian of and… … PRACTICAL PROBLEMS. 238 second is the longitude triangle. Let the student observe Chap. i.that the line Q q represents a circle, the whole equator; andthe point qp represents, in fact, two points, the 0 degree ofright ascension and the 180th degree. So the point s repre-sents two points, and T B is…
Astronomy
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