| 单词 | siderostat mirror |
| 释义 | > as lemmassiderostat mirror A flat mirror mounted and slowly rotated to compensate for the diurnal rotation of the celestial sphere, so that light from a celestial object under observation is directed to the same position in a telescope, detector, etc. Also siderostat mirror. ΘΚΠ the world > the universe > cosmology > science of observation > astronomical instruments > observational instruments > [noun] > stars astrometer1783 astrophanometer?1810 scintillometer1861 astrophotometer1866 siderostat1868 wedge-photometer1883 scintilloscope1890 1868 Index Foreign Sci. Periodicals 3 Apr. 97 Description of L. Foucault's Siderostat. 1890 Philos. Mag. 29 42 The siderostat-mirror has been so placed as to be sending towards the bolometer radiations from the sky on the east of the moon. 1983 R. Kingslake Optical Syst. Design ix. 150 The siderostat can be mounted at the top of the telescope, as has been done in the large McMath solar telescope on Kitt Peak. 2015 S. K. Saha High Resol. Imaging iii. 150 Four telescopes, each comprising a 50 cm siderostat mirror that feed a fixed horizontal 40 cm Cassegrain telescope..are arranged in a Y-layout. < as lemmas |
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