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 232
shed figures not very liketo what it appears through powerful glasses. About forty years after this, Huygens, havinggreatly improved the art of grinding object glasses,first with a telescope of twelve, and afterward withone of twenty-three feet, that magnified a hundredtimes, (Galileos magnified… … our eyes are never elevated so much above eitherplane as to have the visual ray stand at rightangles to it: our eye, indeed, is never elevatedmore than thirty degrees above the plane of thering. For the most part we view the ring at anoblique angle, so that it appears of an oval form,more or less…
Astronomy
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