The wonders of the heavens, being a popular view of astronomy, including a full illustration of the mechanism of the heavens; embracing the sun, moon, and stars, with descriptions of the planets, comets, fixed stars, double stars, the constellations, the galaxy, or milky-way, the zodiacal light, aurora borealis, or norhtern lights, meteors, clouds, falling stars, aërolites, &c (1837)
Bradford, Duncan. [from old catalog] · Boston, American stationers company · leaf 356
of making observations,is contained in the Transactions of the London Philosophical Society for 1795. The date of thecompletion of this apparatus was fixed by Herschel,as before stated, at the 28th of August, 1789. The frame of this instrument having greatlydecayed, it was taken down, and another,… … servatory, at Greenwich, by Mr. Ramage, in 1820.The diameter of the concave reflector is fifteeninches, and its focus twenty-five feet; the mechan-ical arrangement of the stand is greatly simpli- fied. A perspective view of the whole instrument isshown in the above figure. The tube is composedof a…
Astronomy
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