Matches in SemOpenAlex for { <https://semopenalex.org/work/W2137100425> ?p ?o ?g. }
Showing items 1 to 60 of
60
with 100 items per page.
- W2137100425 endingPage "1677" @default.
- W2137100425 startingPage "1677" @default.
- W2137100425 abstract "The Hartmann test is a well-known technique for testing large telescopes mirrors. The Hartmann technique samples the wavefront under analysis using a screen of a uniformly spaced array of holes located at the pupil’s plane. The traditional technique used to gather quantitative data requires the measurement of the centroid of these holes as imaged near the paraxial focus. The deviation from its unaberrated uniform position is proportional to the slope of the wavefront’s asphericity. The centroid estimation is normally done manually with the aid of a microscope or a densitometer. Traditional techniques for carrier frequency fringe analysis cannot be used to analyze Hartmanngrams because this pattern contains many spatial frequencies hard to eliminate using standard linear filters. Also due to the finite extent of the pupils, Fourier transform methods and convolution filters with large support are not well suited for the analysis. We propose a new technique based on regularized bandpass filters to detect the transverse aberration in Hartmanngrams. These filters are used to transform the distorted 2-D dot pattern of the Hartmanngram into two orthogonal linear-carrier phase-modulated cosinusoidal gratings. The resulting cosinusoidal fringe patterns are then well suited for the analysis using highly sensitive 2-D carrier frequency phase estimation techniques such as direct interferometry." @default.
- W2137100425 created "2016-06-24" @default.
- W2137100425 creator A5020341446 @default.
- W2137100425 creator A5053265972 @default.
- W2137100425 creator A5072818234 @default.
- W2137100425 creator A5089958541 @default.
- W2137100425 date "1996-06-01" @default.
- W2137100425 modified "2023-10-13" @default.
- W2137100425 title "New technique for ray aberration detection in Hartmanngrams based on regularized bandpass filters" @default.
- W2137100425 cites W1981293229 @default.
- W2137100425 cites W1982534521 @default.
- W2137100425 cites W1990503574 @default.
- W2137100425 cites W2009511046 @default.
- W2137100425 cites W2062614109 @default.
- W2137100425 cites W2076438958 @default.
- W2137100425 cites W2079418667 @default.
- W2137100425 cites W2084349857 @default.
- W2137100425 cites W2139917231 @default.
- W2137100425 cites W2992615466 @default.
- W2137100425 doi "https://doi.org/10.1117/1.600743" @default.
- W2137100425 hasPublicationYear "1996" @default.
- W2137100425 type Work @default.
- W2137100425 sameAs 2137100425 @default.
- W2137100425 citedByCount "3" @default.
- W2137100425 crossrefType "journal-article" @default.
- W2137100425 hasAuthorship W2137100425A5020341446 @default.
- W2137100425 hasAuthorship W2137100425A5053265972 @default.
- W2137100425 hasAuthorship W2137100425A5072818234 @default.
- W2137100425 hasAuthorship W2137100425A5089958541 @default.
- W2137100425 hasConcept C120665830 @default.
- W2137100425 hasConcept C121332964 @default.
- W2137100425 hasConcept C147788027 @default.
- W2137100425 hasConcept C41008148 @default.
- W2137100425 hasConcept C45613198 @default.
- W2137100425 hasConceptScore W2137100425C120665830 @default.
- W2137100425 hasConceptScore W2137100425C121332964 @default.
- W2137100425 hasConceptScore W2137100425C147788027 @default.
- W2137100425 hasConceptScore W2137100425C41008148 @default.
- W2137100425 hasConceptScore W2137100425C45613198 @default.
- W2137100425 hasIssue "6" @default.
- W2137100425 hasLocation W21371004251 @default.
- W2137100425 hasOpenAccess W2137100425 @default.
- W2137100425 hasPrimaryLocation W21371004251 @default.
- W2137100425 hasRelatedWork W2001098164 @default.
- W2137100425 hasRelatedWork W2038804951 @default.
- W2137100425 hasRelatedWork W2043875612 @default.
- W2137100425 hasRelatedWork W2065492150 @default.
- W2137100425 hasRelatedWork W2074863883 @default.
- W2137100425 hasRelatedWork W2080841142 @default.
- W2137100425 hasRelatedWork W2792876945 @default.
- W2137100425 hasRelatedWork W2948979202 @default.
- W2137100425 hasRelatedWork W2996332206 @default.
- W2137100425 hasRelatedWork W4251178782 @default.
- W2137100425 hasVolume "35" @default.
- W2137100425 isParatext "false" @default.
- W2137100425 isRetracted "false" @default.
- W2137100425 magId "2137100425" @default.
- W2137100425 workType "article" @default.