A beginner's star-book; an easy guide to the stars and to the astronomical uses of the opera-glass, the field-glass and the telescope (1912)
Murphy, Edgar Gardner, 1869-1913 · New York, London, G.P. Putnam's sons · leaf 89
ften better lighted in the six-day moon than in this photo-graph,—and next to it, Chacornac, No. 23. Posidonius is one of the finest of lunar objects,for while its walls are only about 6000 feet high, its central crater rises from a brilliantfloor on which, with a good instrument, one may find the… … KEY-MAP TO MOON, AT SIX DAYS See accompanying text, with illustration opposite ^be flDooii in tbe telescope 75
Astronomy
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