Howe, Herbert A. (Herbert Alonzo), 1858-1926 · Meadville, Penna., Flood and Vincent · leaf 146
he tel-escope to this shaftin such a way that itcan be pointed in anydirection, the prob-lem is solved. The fundamentalshaft which pointstoward the celestialpoles, and is parallelto the earths axis, iscalled the polar axis,and is shown on topof the pillar in Fig.74 ; it is below thetelescope and… … Fig. 74.—An Equatorial Telescope. 140 A Study of the Sky Ingeniouscontrivances. Accurateworkmanship. Variousmaterials. lamp is shown in the figure. The declination axis carriesa heavy weight, to balance the weight of the telescope,so that the entire structure may be nicely poised on thepolar axis.…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
