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- Wolter_telescope abstract "A Wolter telescope is a telescope for X-rays using only grazing incidence optics. Visible light telescopes are built with lenses or parabolic mirrors at nearly normal incidence. Neither works well for X-rays. Lenses for visible light are made of a transparent material with an index of refraction substantially different from one, but there is no equivalent material for x-rays. Conventional mirror telescopes work poorly in the X-rays as well, since the light hits the mirrors at near-normal incidence, where the X-rays are transmitted or absorbed, not reflected.X-rays mirrors can be built, but only if the angle from the plane of reflection is very low (typically 10 arc-minutes to 2 degrees). These are called glancing (or grazing) incidence mirrors. In 1952, Hans Wolter outlined three ways a telescope could be built using only this kind of mirror. These are called Wolter telescopes of type I, II, and III. Each has different advantages and disadvantages.Wolter's key discovery was that by using two mirrors it is possible to create a telescope with a usably wide field of view. In contrast, a grazing incidence telescope with just one parabolic mirror could focus X-rays, but only very close to the centre of the field of view as it would suffer from extreme coma.".
- Wolter_telescope thumbnail Wolter-types.gif?width=300.
- Wolter_telescope wikiPageExternalLink Wolter_optics.
- Wolter_telescope wikiPageID "15387298".
- Wolter_telescope wikiPageRevisionID "592455546".
- Wolter_telescope autor "Arndt Last".
- Wolter_telescope hasPhotoCollection Wolter_telescope.
- Wolter_telescope titel "Wolter-optics".
- Wolter_telescope url Wolter_optics.
- Wolter_telescope zugriff "8".
- Wolter_telescope subject Category:Astronomy_stubs.
- Wolter_telescope subject Category:Optics.
- Wolter_telescope subject Category:X-ray_instrumentation.
- Wolter_telescope subject Category:X-ray_telescopes.
- Wolter_telescope type Artifact100021939.
- Wolter_telescope type Device103183080.
- Wolter_telescope type Instrument103574816.
- Wolter_telescope type Instrumentality103575240.
- Wolter_telescope type Magnifier103709206.
- Wolter_telescope type Object100002684.
- Wolter_telescope type PhysicalEntity100001930.
- Wolter_telescope type ScientificInstrument104147495.
- Wolter_telescope type Telescope104403638.
- Wolter_telescope type Whole100003553.
- Wolter_telescope type X-rayTelescopes.
- Wolter_telescope comment "A Wolter telescope is a telescope for X-rays using only grazing incidence optics. Visible light telescopes are built with lenses or parabolic mirrors at nearly normal incidence. Neither works well for X-rays. Lenses for visible light are made of a transparent material with an index of refraction substantially different from one, but there is no equivalent material for x-rays.".
- Wolter_telescope label "Telescopio Wolter".
- Wolter_telescope label "Télescope Wolter".
- Wolter_telescope label "Wolter telescope".
- Wolter_telescope label "Wolter-Teleskop".
- Wolter_telescope label "Телескоп Вольтера".
- Wolter_telescope label "تلسكوب ولتر".
- Wolter_telescope label "ヴォルター望遠鏡".
- Wolter_telescope sameAs Wolter-Teleskop.
- Wolter_telescope sameAs Télescope_Wolter.
- Wolter_telescope sameAs Telescopio_Wolter.
- Wolter_telescope sameAs ヴォルター望遠鏡.
- Wolter_telescope sameAs m.03m6tny.
- Wolter_telescope sameAs Q968571.
- Wolter_telescope sameAs Q968571.
- Wolter_telescope sameAs Wolter_telescope.
- Wolter_telescope wasDerivedFrom Wolter_telescope?oldid=592455546.
- Wolter_telescope depiction Wolter-types.gif.
- Wolter_telescope isPrimaryTopicOf Wolter_telescope.