Astronomy with an opera-glass: a popular introduction to the study of the starry heavens with the simplest of optical instruments, with maps and directions to facilitate the recognition of the constellations and the principal stars, visible to the naked eye (1890)
Serviss, Garrett Putman, 1851-1929 · New York D. Appleton · leaf 152
the autumn of 1877. Mars is espe-cially interesting because of the apparently growing beliefthat it may be an inhabited world, and because of certaincurious markings on its surface that can only be seen underfavorable conditions. The recent completion of the greatLick telescope and other large… … THE MOOX THE PLANETS, AND THE SUN. 141 Jupiter, although much more distant than Mars, is ordi-narily a far more conspicuous phenomenon in the sky onaccount of his vast bulk. His interest to observers with anopera-glass depends mainly upon his four moons, which, asthey circle about him, present a…
Astronomy -- Observers' manuals
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
