Howe, Herbert A. (Herbert Alonzo), 1858-1926 · Meadville, Penna., Flood and Vincent · leaf 151
server is abovequite a thickness of atmosphere, so that the stars shineout more clearly, and faint objects are more distinctlyvisible. But the disadvantages are many. On a moun- 143 An observatory. Its site. A mountain. 144 A Study of the Sky tain top the air is almost always in motion ;… … 76.—The Yerkes Observatory, or even clouds, which hang about the duces mistssummit. Even when no mist forms, whirling currents comebetween the telescope and the celestial object towardwhich it is pointed. The light from the object, in pass-ing through these changing currents, is bent hither…
Astronomy
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