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TELESCOPE PUPILLE FENTE [1 record]
Record 1 - internal organization data 2007-12-14
Record 1, English
Record 1, Subject field(s)
- Facilities and Instruments (Astronomy)
- Remote Sensing
Record 1, Main entry term, English
- slit aperture telescope
1, record 1, English, slit%20aperture%20telescope
correct
Record 1, Abbreviations, English
- S.A.T. 2, record 1, English, S%2EA%2ET%2E
correct
- SAT 3, record 1, English, SAT
correct
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
The interest of a ground based Slit Aperture Telescope (SAT) which operates with a long thin pupil has been underlined for applications in the field of high angular resolution observations by speckle-interferometric techniques. The SAT lies halfway between the Michelson stellar interferometer and the standard telescope with circular aperture. The authors present the principle of an image processing algorithm which could be used associated with a space-SAT for astronomical image reconstruction. A full coverage of the two dimensional Fourier plane of the astronomical object can be obtained by rotating the SAT around its optical axis. The method of image reconstruction is analogous to those used in computerized tomography and uses Fast Fourier Transform algorithm. The interest of the use of a rotating space-SAT among synthetic apertures is its capability of giving a reconstructed image of the astronomical object simultaneously in several light wavelengths, each colored image being comparable with the others for fruitful astrophysical applications. 3, record 1, English, - slit%20aperture%20telescope
Record 1, French
Record 1, Domaine(s)
- Installations et instruments (Astronomie)
- Télédétection
Record 1, Main entry term, French
- télescope à pupille fente
1, record 1, French, t%C3%A9lescope%20%C3%A0%20pupille%20fente
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Le télescope à pupille fente fournit des images unidimensionnelles et opère en synthèse d'ouverture. En l'absence de turbulence atmosphérique, l'image focale fournie par un télescope à pupille fente est quasiment une projection unidimensionnelle de l'objet observé. Après une rotation complète autour de son axe optique, on obtient un ensemble de projections de l'objet observé qui n'est autre que la transformée de Radon de l'objet. 1, record 1, French, - t%C3%A9lescope%20%C3%A0%20pupille%20fente
Record 1, Spanish
Record 1, Textual support, Spanish
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