Matches in SemOpenAlex for { <https://semopenalex.org/work/W2078188295> ?p ?o ?g. }
Showing items 1 to 60 of
60
with 100 items per page.
- W2078188295 abstract "If gossamer primary mirrors were to be constructed in a spherical form, it would be possible to arrange a simple null- test in situ. However, spherical mirrors would require correction of the large amount of spherical aberration created in pupils that generally will be greater than 2 m diameter. The design requirement is for diffraction-limited performance over a useful angular field. The otherwise excellent wide- field design solutions of the classical Schmidt and Maksutov are inapplicable in gossamer structures because of the mass and size penalty of large refractive components. However, it is possible for this mode of correction to be achieved near the prime focus by means of pupil transfer optics that minify the large entrance pupil down to more acceptable dimensions. A problem with these solutions is constraint of field coverage due to pupil aberrations created by the large spherical aberration of the primary mirror. This leads the designer towards slower primaries and the penalty of larger, heavier structures. A solution is presented here for spherical primaries with speeds up to f/4. This is based on the 'KiwiStar' principle presented here in 1997, in which a large spherical catoptric is combined by pupil-transfer with a smaller spherical catadioptric to give well corrected wide field images of high speed. This system is well suited to correction at the prime focus of large spherical mirrors, and has only one relatively small weak aspheric surface to provide zonal correction, all other surfaces being spherical. An example is presented of a 4 m diameter, f/2.5 system that is diffraction-limited over the whole of a 0.25 degree field (43 mm diameter), for a bandpass of 486 - 850 nm." @default.
- W2078188295 created "2016-06-24" @default.
- W2078188295 creator A5032948784 @default.
- W2078188295 date "2000-10-31" @default.
- W2078188295 modified "2023-09-23" @default.
- W2078188295 title "<title>Wide-field aberration corrector for spherical gossamer primary mirrors</title>" @default.
- W2078188295 doi "https://doi.org/10.1117/12.405784" @default.
- W2078188295 hasPublicationYear "2000" @default.
- W2078188295 type Work @default.
- W2078188295 sameAs 2078188295 @default.
- W2078188295 citedByCount "0" @default.
- W2078188295 crossrefType "proceedings-article" @default.
- W2078188295 hasAuthorship W2078188295A5032948784 @default.
- W2078188295 hasConcept C120665830 @default.
- W2078188295 hasConcept C121332964 @default.
- W2078188295 hasConcept C143588538 @default.
- W2078188295 hasConcept C15336307 @default.
- W2078188295 hasConcept C153396827 @default.
- W2078188295 hasConcept C192209626 @default.
- W2078188295 hasConcept C2524010 @default.
- W2078188295 hasConcept C2778664614 @default.
- W2078188295 hasConcept C2780848835 @default.
- W2078188295 hasConcept C33923547 @default.
- W2078188295 hasConcept C3768446 @default.
- W2078188295 hasConcept C62520636 @default.
- W2078188295 hasConcept C70638346 @default.
- W2078188295 hasConcept C77730005 @default.
- W2078188295 hasConcept C81253797 @default.
- W2078188295 hasConceptScore W2078188295C120665830 @default.
- W2078188295 hasConceptScore W2078188295C121332964 @default.
- W2078188295 hasConceptScore W2078188295C143588538 @default.
- W2078188295 hasConceptScore W2078188295C15336307 @default.
- W2078188295 hasConceptScore W2078188295C153396827 @default.
- W2078188295 hasConceptScore W2078188295C192209626 @default.
- W2078188295 hasConceptScore W2078188295C2524010 @default.
- W2078188295 hasConceptScore W2078188295C2778664614 @default.
- W2078188295 hasConceptScore W2078188295C2780848835 @default.
- W2078188295 hasConceptScore W2078188295C33923547 @default.
- W2078188295 hasConceptScore W2078188295C3768446 @default.
- W2078188295 hasConceptScore W2078188295C62520636 @default.
- W2078188295 hasConceptScore W2078188295C70638346 @default.
- W2078188295 hasConceptScore W2078188295C77730005 @default.
- W2078188295 hasConceptScore W2078188295C81253797 @default.
- W2078188295 hasLocation W20781882951 @default.
- W2078188295 hasOpenAccess W2078188295 @default.
- W2078188295 hasPrimaryLocation W20781882951 @default.
- W2078188295 hasRelatedWork W2000566438 @default.
- W2078188295 hasRelatedWork W2033158586 @default.
- W2078188295 hasRelatedWork W2043545966 @default.
- W2078188295 hasRelatedWork W2064517147 @default.
- W2078188295 hasRelatedWork W2078188295 @default.
- W2078188295 hasRelatedWork W2145042304 @default.
- W2078188295 hasRelatedWork W2168128721 @default.
- W2078188295 hasRelatedWork W2267586016 @default.
- W2078188295 hasRelatedWork W2469886042 @default.
- W2078188295 hasRelatedWork W3004036249 @default.
- W2078188295 isParatext "false" @default.
- W2078188295 isRetracted "false" @default.
- W2078188295 magId "2078188295" @default.
- W2078188295 workType "article" @default.