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 67
of larger aper-ture, with a low-power eye-piece, will find them morereadily and permit a more satisfactory view of them.View also with such an eye-piece the clusters and nebuteM 17 [344], M 20 [342], and M 22 [343] in Sagittarius, aswell as those already mentioned. The cluster M 5 [371)in Serpens… … NIGHT-CHART TO THE SKY AS THE OBSERVER FACES NORTH.SEPT. 1, 8 P.M., AUG. 15, 9 P.M., AUG. 1, 10 P.M.. JULY IS, 11 P.M., JULY 1, 12 P.M. FOR KEY-MAP TO THIS CHART SEE OPPOSITE PAGE. FOR THE SKY AS THE OBSERVER FACES SOUTH, SEE PP. 56, 57. For the sky at other Dates and Hours see Time Schedule, p,…
Astronomy
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
