| 单词 | transit telescope |
| 释义 | > as lemmastransit telescope transit telescope n. Astronomy a telescope mounted so that it rotates vertically about a fixed horizontal axis, used for measuring the altitudes of stars and timing their transit across the meridian.Cf. transit circle n., transit instrument n., meridian circle n. 2. ΚΠ 1743 J. Bradley Memorandum 1 Aug. in Misc. Wks. & Corr. (1832) p. lv This day I put a shorter eyeglass into the transit telescope.., so that the telescope magnifies now about forty times. 1853 National Mag. Sept. 288/2 The signal-giver at Greenwich had the means of observing the passage of a star across the field of the transit telescope and of giving signal at the same time. 2002 L. Belkora Minding the Heavens v. 124 A typical transit telescope (figure 5.2) rotates around a horizontal axis and can point only along a north-south line. < as lemmas |
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