Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Cassegrain_reflector> ?p ?o }
- Cassegrain_reflector abstract "The Cassegrain reflector is a combination of a primary concave mirror and a secondary convex mirror, often used in optical telescopes and radio antennas.In a symmetrical Cassegrain both mirrors are aligned about the optical axis, and the primary mirror usually contains a hole in the centre thus permitting the light to reach an eyepiece, a camera, or a light detector. Alternatively, as in many radio telescopes, the final focus may be in front of the primary. In an asymmetrical Cassegrain, the mirror(s) may be tilted to avoid obscuration of the primary or the need for a hole in the primary mirror (or both).The classic Cassegrain configuration uses a parabolic reflector as the primary while the secondary mirror is hyperbolic. Modern variants often have a hyperbolic primary for increased performance( for example, the Ritchey–Chrétien design), or the primary and/or secondary are spherical or elliptical for ease of manufacturing.The Cassegrain reflector is named after a published reflecting telescope design that appeared in the April 25, 1672 Journal des sçavans which has been attributed to Laurent Cassegrain. Similar designs using convex secondaries have been found in the Bonaventura Cavalieri's 1632 writings describing burning mirrors and Marin Mersenne's 1636 writings describing telescope designs. James Gregory's 1662 attempts to create a reflecting telescope included a Cassegrain configuration, judging by a convex secondary mirror found among his experiments.The Cassegrain design is also used in catadioptric systems.".
- Cassegrain_reflector thumbnail Cassegrain.en.png?width=300.
- Cassegrain_reflector wikiPageID "2151693".
- Cassegrain_reflector wikiPageLength "12047".
- Cassegrain_reflector wikiPageOutDegree "63".
- Cassegrain_reflector wikiPageRevisionID "671622066".
- Cassegrain_reflector wikiPageWikiLink Antenna_(radio).
- Cassegrain_reflector wikiPageWikiLink Anton_Kutter.
- Cassegrain_reflector wikiPageWikiLink Astronomer.
- Cassegrain_reflector wikiPageWikiLink Bonaventura_Cavalieri.
- Cassegrain_reflector wikiPageWikiLink Camera.
- Cassegrain_reflector wikiPageWikiLink Catadioptric_system.
- Cassegrain_reflector wikiPageWikiLink Category:Radio_frequency_antenna_types.
- Cassegrain_reflector wikiPageWikiLink Category:Radio_frequency_propagation.
- Cassegrain_reflector wikiPageWikiLink Category:Telescope_types.
- Cassegrain_reflector wikiPageWikiLink Celestron.
- Cassegrain_reflector wikiPageWikiLink Coma_(optics).
- Cassegrain_reflector wikiPageWikiLink Concave_mirror.
- Cassegrain_reflector wikiPageWikiLink Conic_constant.
- Cassegrain_reflector wikiPageWikiLink Convex_mirror.
- Cassegrain_reflector wikiPageWikiLink Curved_mirror.
- Cassegrain_reflector wikiPageWikiLink Dmitri_Dmitrievich_Maksutov.
- Cassegrain_reflector wikiPageWikiLink Dmitry_Dmitrievich_Maksutov.
- Cassegrain_reflector wikiPageWikiLink Earth_station.
- Cassegrain_reflector wikiPageWikiLink Ellipse.
- Cassegrain_reflector wikiPageWikiLink Eyepiece.
- Cassegrain_reflector wikiPageWikiLink F-number.
- Cassegrain_reflector wikiPageWikiLink Figuring.
- Cassegrain_reflector wikiPageWikiLink File:Cassegrain.en.png.
- Cassegrain_reflector wikiPageWikiLink Focal_length.
- Cassegrain_reflector wikiPageWikiLink George_Willis_Ritchey.
- Cassegrain_reflector wikiPageWikiLink Goldstone_Deep_Space_Communications_Complex.
- Cassegrain_reflector wikiPageWikiLink Ground_station.
- Cassegrain_reflector wikiPageWikiLink Henri_Chrétien.
- Cassegrain_reflector wikiPageWikiLink Hyperboloid.
- Cassegrain_reflector wikiPageWikiLink James_Gregory_(mathematician).
- Cassegrain_reflector wikiPageWikiLink Jet_Propulsion_Laboratory.
- Cassegrain_reflector wikiPageWikiLink Journal_des_sçavans.
- Cassegrain_reflector wikiPageWikiLink Klevtsov-Cassegrain_telescope.
- Cassegrain_reflector wikiPageWikiLink Klevtsov–Cassegrain_telescope.
- Cassegrain_reflector wikiPageWikiLink Laurent_Cassegrain.
- Cassegrain_reflector wikiPageWikiLink Light_detector.
- Cassegrain_reflector wikiPageWikiLink List_of_telescope_types.
- Cassegrain_reflector wikiPageWikiLink Maksutov_telescope.
- Cassegrain_reflector wikiPageWikiLink Mangin_mirror.
- Cassegrain_reflector wikiPageWikiLink Marin_Mersenne.
- Cassegrain_reflector wikiPageWikiLink Meade_Instruments.
- Cassegrain_reflector wikiPageWikiLink Optical_axis.
- Cassegrain_reflector wikiPageWikiLink Optical_telescope.
- Cassegrain_reflector wikiPageWikiLink Parabolic_reflector.
- Cassegrain_reflector wikiPageWikiLink Questar_Corporation.
- Cassegrain_reflector wikiPageWikiLink Questar_Telescope.
- Cassegrain_reflector wikiPageWikiLink Radio_telescope.
- Cassegrain_reflector wikiPageWikiLink Radius_of_curvature_(optics).
- Cassegrain_reflector wikiPageWikiLink Reflecting_telescope.
- Cassegrain_reflector wikiPageWikiLink Refracting_telescope.
- Cassegrain_reflector wikiPageWikiLink Ritchey–Chrétien_telescope.
- Cassegrain_reflector wikiPageWikiLink Roger_Hayward.
- Cassegrain_reflector wikiPageWikiLink Russia.
- Cassegrain_reflector wikiPageWikiLink Schmidt-Cassegrain_telescope.
- Cassegrain_reflector wikiPageWikiLink Schmidt_camera.
- Cassegrain_reflector wikiPageWikiLink Schmidt_corrector_plate.
- Cassegrain_reflector wikiPageWikiLink Schmidt–Cassegrain_telescope.
- Cassegrain_reflector wikiPageWikiLink Scientific_American.
- Cassegrain_reflector wikiPageWikiLink Scientific_equipment_optician.
- Cassegrain_reflector wikiPageWikiLink Soviet_Union.
- Cassegrain_reflector wikiPageWikiLink Sphere.
- Cassegrain_reflector wikiPageWikiLink Spherical_aberration.
- Cassegrain_reflector wikiPageWikiLink Vixen_(telescopes).
- Cassegrain_reflector wikiPageWikiLink File:Cassegrain_Telescope.svg.
- Cassegrain_reflector wikiPageWikiLink File:DSN_Antenna_details.jpg.
- Cassegrain_reflector wikiPageWikiLinkText "Cassegrain Focus".
- Cassegrain_reflector wikiPageWikiLinkText "Cassegrain Telescope".
- Cassegrain_reflector wikiPageWikiLinkText "Cassegrain design".
- Cassegrain_reflector wikiPageWikiLinkText "Cassegrain reflecting telescope".
- Cassegrain_reflector wikiPageWikiLinkText "Cassegrain reflecting".
- Cassegrain_reflector wikiPageWikiLinkText "Cassegrain reflector".
- Cassegrain_reflector wikiPageWikiLinkText "Cassegrain system with subreflectors".
- Cassegrain_reflector wikiPageWikiLinkText "Cassegrain telescope".
- Cassegrain_reflector wikiPageWikiLinkText "Cassegrain telescopes".
- Cassegrain_reflector wikiPageWikiLinkText "Cassegrain".
- Cassegrain_reflector wikiPageWikiLinkText "Reflector".
- Cassegrain_reflector wikiPageWikiLinkText "Schiefspiegler".
- Cassegrain_reflector wikiPageWikiLinkText "Schmidt-Cassegrain".
- Cassegrain_reflector wikiPageWikiLinkText "cassegrain reflector".
- Cassegrain_reflector wikiPageWikiLinkText "cassegrain".
- Cassegrain_reflector wikiPageWikiLinkText "cassegrains".
- Cassegrain_reflector wikiPageWikiLinkText "classical Cassegrain".
- Cassegrain_reflector align "right".
- Cassegrain_reflector caption "Light path in a Klevtsov-Cassegrain telescope".
- Cassegrain_reflector caption "Light path in a Maksutov-Cassegrain".
- Cassegrain_reflector caption "Light path in a Schmidt-Cassegrain".
- Cassegrain_reflector direction "vertical".
- Cassegrain_reflector hasPhotoCollection Cassegrain_reflector.
- Cassegrain_reflector image "Diagram Reflector KlevtsovCassegrain.svg".
- Cassegrain_reflector image "Maksutov-Cassegrain-Telescope.svg".
- Cassegrain_reflector image "Schmidt-Cassegrain-Telescope.svg".
- Cassegrain_reflector width "225".
- Cassegrain_reflector wikiPageUsesTemplate Template:Commons_category.
- Cassegrain_reflector wikiPageUsesTemplate Template:Main.