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 122
nufacturers in a number of designs; all representing the same principle of construction.The alt-azimuth type is less expensive as well as less complicated than the equatorial,and it is adapted, if well made, to all the ordinary needs of the amateur. * See Chambers Handbook of A stronomy, vol. i.,… … TELESCOPE—MODEL C Ait-Azitnuth Mounting io8 a Beoinncr0 Star^Booh The Telescope for the School In teaching the circles of the celestial sphere and in illustrating the theory of the science,the instructor may desire an equatorial mounting, but in the practical work of observa-tion, in introducing…
Astronomy
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