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... > Instruments > Earth Remote Sensing Instruments > Passive Remote Sensing > Photon/Optical Detectors > Cameras > Schmidt-Cassegrain Telescope

Preferred term

Schmidt-Cassegrain Telescope  

Definition

  • Schmidt-Cassegrain telescope is a Cassegrain-like two-mirror system combined with a full-aperture Schmidt corrector. Various combinations of corrector separation and mirror conics are possible, with somewhat different image field properties. Prevailing commercial arrangement is a compact design with fast spherical primary and usually also spherical secondary mirror, resulting in ~ƒ/10 system. All-spherical SCT is corrected only for spherical aberration, with low astigmatism, as well as relatively strong field curvature and coma remaining. The corrector also induces low level spherochromatism, undetectable visually and negligible for most photographic applications. (en)

Broader concept

Change note

  • 2017-08-11 08:42:23.0 [mmorahan] Insert Concept add broader relation (Schmidt-Cassegrain telescope [f50dc982-9fe2-4a45-aaac-9bb691239d8c,309887] - Cameras [d322ae9d-bde0-448f-948d-777aef096eb6,291371]);
  • 2017-08-11 08:43:09.0 [mmorahan] Rename Concept update PrefLabel (Schmidt-Cassegrain Telescope);
  • 2017-08-11 08:45:05.0 [mmorahan] insert AltLabel (id: null category: primary text: Schmidt-Cassegrain Telescope language code: en); insert Definition (id: null text: Schmidt-Cassegrain telescope is a Cassegrain-like two-mirror system combined with a full-aperture Schmidt corrector. Various combinations of corrector separation and mirror conics are possible, with somewhat different image field properties. Prevailing commercial arrangement is a compact design with fast spherical primary and usually also spherical secondary mirror, resulting in ~ƒ/10 system. All-spherical SCT is corrected only for spherical aberration, with low astigmatism, as well as relatively strong field curvature and coma remaining. The corrector also induces low level spherochromatism, undetectable visually and negligible for most photographic applications. language code: en);

URI

https://gcmd.earthdata.nasa.gov/kms/concept/f50dc982-9fe2-4a45-aaac-9bb691239d8c

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