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 59
ken toensure the steadiness of the instrument. Iota (i) (83]in the same group should be tried also, as well as the starsOmicron (o) [163], Delta (8) [166], and Iota (i) (164) inDr.\co. Gamma (y) [165I, in Dr.\cos head, is a littlemore difficult. At the time covered by our next map ofthe northern… … NIGHT-CHART TO THE SKY AS THE OBSERVER FACES SOUTH.MARCH 1, 8 P.M., FEB. 15, 9 P.M., FEB. 1, 10 P.M., JAN. 15, 11 P.M., JAN. 1, 12 P.M. FOR KEY-MAP TO THIS CHART SEE OPPOSITE PAGE. FOR THE SKY AS THE OBSERVER FACES NORTH, SEE PP. 42, 43. For the sky at other Dates and Hours see Time Schedule, p.…
Astronomy
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