| 单词 | aerial telescope |
| 释义 | > as lemmasaerial telescope aerial telescope n. a type of tubeless refracting telescope with a very long focal length, typically consisting of a swivelling objective lens mounted on a tall pole or mast, connected to an eyepiece by a long string or rod; now historical. ΚΠ 1684 Philos. Trans. (Royal Soc.) 14 668 (heading) Christiani Hugenii Astroscopia compendiaria, Tubi optici molimine liberata. Or the description of an Aerial Telescope. 1727 C. Leadbetter Astron. 14 Mr. Hugens invented a Method to use Glasses in the Night without a Tube; and this he calls an Aerial Telescope. 1825 Ann. Philos. New Ser. 10 414 If the old aerial telescope were more generally applied, not only the spots of Venus, but other objects, might be better seen than with other instruments. 1924 Sci. Monthly Aug. 124 Professor John Winthrop, of Harvard, observed a transit of Mercury, April 27, 1740, with a 24-foot aerial telescope. 2013 P. G. Abel Visual Lunar & Planetary Astron. vi. 111 Astronomy became his [sc. Hevelius'] passion, and at some point in the 1640s he established the Sternberg Observatory, which was equipped with that cumbersome telescope of the era—the aerial telescope. < as lemmas |
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