The Recent Progress of Astronomy: Especially in the United StatesHarper, 1850 - 257 pages |
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Common terms and phrases
61 Cygni American appeared asteroids astronomical observations Bessel Biela body brightness Cambridge cents chronometers clear aperture clock-work cluster comet comparison declination circle degrees determined disc discovered discovery distance dollars dome double stars earth eccentricity Engravings entire equatorial erected error Europe eye-piece five feet fixed stars focal length four furnished gages heavens inches aperture inches in diameter infer instru Jupiter Le Verrier Lieut longitude Lord Rosse Mädler magnifying mass ment meridian circle micrometer Milky mounted Munich mural circle Muslin nearly nebula Neptune nucleus number of stars object glass observatory obtained parallax perihelion period Philadelphia pier planet Pleiades position prime vertical Prof Professor proper motions Pulkova reads refracting telescopes refractor result Right Ascension satellite Saturn seconds of arc seen servatory sidereal clock Simms stars visible Struve sun's supposed tail tance tele telegraph telescope tenth magnitude tion tower transit instrument Uranus Verrier Washington wing wire
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Page 155 - ... we could plainly see that all about the trapezium is a mass of stars ; the rest of the nebula also abounding with stars and exhibiting the characteristics of resolvability strongly marked.