Zobrazeno 1 - 10
of 63
pro vyhledávání: '"R. V. Willstrop"'
Autor:
D. Lynden-Bell, R. V. Willstrop
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 387:677-688
The methods of exact optics are here extended to cover the design of lens and mirror systems. Power series are given for the shapes of both Schmidt corrector plates and their complementary almost spherical mirrors. Their off-axis images are analysed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d86fd1ba6772ea1c452a383da245e04
https://doi.org/10.1111/j.1365-2966.2008.13227.x
https://doi.org/10.1111/j.1365-2966.2008.13227.x
Autor:
R. V. Willstrop
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 382:1630-1638
Null tests are described for the strongly curved and highly aspheric mirrors of a set of ‘exact optics’ spectrograph cameras based on the design of Schwarzschild. For f/1.0 and f/1.333 cameras having a focal length of 100 mm the tests of each mir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fffbb738fa65404c896a66dc1875b367
https://doi.org/10.1111/j.1365-2966.2007.12396.x
https://doi.org/10.1111/j.1365-2966.2007.12396.x
Autor:
R. V. Willstrop, Donald Lynden-Bell
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 351:317-323
Spherical-mirror telescopes could look in diverse directions simultaneously as the sphere has no intrinsic axis. However, this remarkable ability is lost if the secondary is too big, as then the different secondaries required for the different direct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e677c1f044785e821ddc510cb8e41dfd
https://doi.org/10.1111/j.1365-2966.2004.07789.x
https://doi.org/10.1111/j.1365-2966.2004.07789.x
Autor:
R. V. Willstrop
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 348:1009-1018
Karl Schwarzschild identified a system of two mirrors, each defined by conic sections, free of third-order spherical aberration, coma and astigmatism, and with a flat focal surface. He considered it impractical, because the field was too restricted.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fcb8ed1f21dc6cdfbf28bf807837aab
https://doi.org/10.1111/j.1365-2966.2004.07421.x
https://doi.org/10.1111/j.1365-2966.2004.07421.x
Autor:
R. V. Willstrop, Donald Lynden-Bell
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 342:33-49
The two-mirror telescopes/cameras that have no coma, no spherical aberration and arbitrarily fast focal ratios form a two-parameter (s, K) family of exact optical designs analytically derived earlier. We explore the full range of these designs in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edcdb4ba4adcdd470398647882b373b3
https://doi.org/10.1046/j.1365-8711.2003.06434.x
https://doi.org/10.1046/j.1365-8711.2003.06434.x
Autor:
R. V. Willstrop
Publikováno v:
Contemporary Physics. 36:389-410
The present surge in the building of telescopes of more than 6 m aperture far surpasses even the efforts of the 1970s when several 3·5-4 m telescopes were built. Early in the next century, astronomers world-wide will have gained about 750 m2 of ligh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a0e41241cce97e78a2ce09237625bb1
https://doi.org/10.1080/00107519508232298
https://doi.org/10.1080/00107519508232298
Autor:
R V Willstrop
Publikováno v:
Measurement Science and Technology. 8
Anyone who has attempted to make accurate photometric measurements will be uncomfortably aware that they are liable to more errors, and greater inaccuracy, than most other physical measurements such as mass, length, time or electric current. However,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8ba32c7ec74174bce0ef876b0c47a34
https://doi.org/10.1088/0957-0233/8/10/025
https://doi.org/10.1088/0957-0233/8/10/025
Autor:
R. V. Willstrop
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 229:143-155
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d974c5ffd952fae72c11aab6ccc24b51
https://doi.org/10.1093/mnras/229.2.143
https://doi.org/10.1093/mnras/229.2.143
Autor:
R. V. Willstrop
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 191:777-783
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a80d827273e69a8a4d898401b92c74f5
https://doi.org/10.1093/mnras/191.4.777
https://doi.org/10.1093/mnras/191.4.777
Autor:
R. V. Willstrop
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 209:587-606
On decrit une methode permettant de modifier un telescope de Couder de f/1,5 afin d'obtenir des images inferieures a 1 arc sec dans un champ de 2°
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4313f0d55fbab784f0613276c8715bbf
https://doi.org/10.1093/mnras/209.3.587
https://doi.org/10.1093/mnras/209.3.587