英语词汇“schmidt–cassegrain telescope”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

2. attributive. Designating an astronomical telescope or camera employing a concave primary mirror, a convex secondary mirror, and a Schmidt corrector plate, so as to eliminate spherical aberrations and achieve a long focal length within a relatively compact housing (as Schmidt–Cassegrain telescope, Schmidt–Cassegrain camera, etc.). Also: of or characteristic of such a telescope or camera.Schmidt–Cassegrain telescopes combine the characteristics of Schmidt cameras and Cassegrain telescopes. They are typically constructed so that light passes through the Schmidt corrector plate and is then reflected by the primary mirror to the secondary, which produces an image at a focal point in front of or behind the primary mirror.In most Schmidt–Cassegrain telescopes the focal point is behind the primary mirror, which has a central hole to allow light from the secondary mirror to pass.

ΚΠ

1944 Monthly Notices Royal Astron. Soc. 104 51 In the present paper we use it [sc. the plate-diagram method] to make a general survey of the Schmidt–Cassegrain systems.

1950 Nature 6 May 703/2 (caption) The Schmidt–Cassegrain telescope mounted in the Mills Observatory, Dundee.

1970 Notes from Observatories 90 252 The diffracted beam is received by a semi-solid quartz Schmidt–Cassegrain camera.

2003 Jrnl. Geophysical Res. 108 2/2 The Mie receiver uses a 35cm telescope of Schmidt-Cassegrain configuration.

2015 J. Ashley Astrophotography on the Go iv. 75 Schmidt Cassegrain telescopes typically have a focal ratio of f/10.

单词	schmidt–cassegrain telescope
释义	> as lemmas Schmidt–Cassegrain telescope 2. attributive. Designating an astronomical telescope or camera employing a concave primary mirror, a convex secondary mirror, and a Schmidt corrector plate, so as to eliminate spherical aberrations and achieve a long focal length within a relatively compact housing (as Schmidt–Cassegrain telescope, Schmidt–Cassegrain camera, etc.). Also: of or characteristic of such a telescope or camera.Schmidt–Cassegrain telescopes combine the characteristics of Schmidt cameras and Cassegrain telescopes. They are typically constructed so that light passes through the Schmidt corrector plate and is then reflected by the primary mirror to the secondary, which produces an image at a focal point in front of or behind the primary mirror.In most Schmidt–Cassegrain telescopes the focal point is behind the primary mirror, which has a central hole to allow light from the secondary mirror to pass. ΚΠ 1944 Monthly Notices Royal Astron. Soc. 104 51 In the present paper we use it [sc. the plate-diagram method] to make a general survey of the Schmidt–Cassegrain systems. 1950 Nature 6 May 703/2 (caption) The Schmidt–Cassegrain telescope mounted in the Mills Observatory, Dundee. 1970 Notes from Observatories 90 252 The diffracted beam is received by a semi-solid quartz Schmidt–Cassegrain camera. 2003 Jrnl. Geophysical Res. 108 2/2 The Mie receiver uses a 35cm telescope of Schmidt-Cassegrain configuration. 2015 J. Ashley Astrophotography on the Go iv. 75 Schmidt Cassegrain telescopes typically have a focal ratio of f/10. extracted from Schmidt–Cassegrainn. < as lemmas
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> as lemmas