1,355,917 research outputs found
AHC interview with Eric Offner
No full textDigital recordingJuly 16, 2013Eric (Erik) Delmonte Offner was born on June 23, 1928. he grew up in a well-to-do Viennese family. His father Sigmund worked for a bank, and he was also a writer and columnist for a left wing newspaper. His mother Kaethe came from a wealthy family of bankers. Erik Offner attended school in Vienna’s 19th District (Doebling). After Anschluss, his father left for England, but Erik, his mother and his grandmother were arrested on Kristallnacht. They were released soon through the intervention of SS officer Riehmann, who had worked for Erik’s father. In December 1938, Erik and his mother left for England via Holland. The family then moved to Brazil in 1940 and immigrated to the US in 1941. Eric Offner later became a lawyer and a jazz producer.Austrian Heritage Collectio
OPTICAL DESIGN OF A FREEFORM OFFNER SPECTROMETER ENABLING A VERY LARGE FIELD OF VIEW
No full textAn Offner spectrometer with a freeform grating has been designed. The aim of the introduction of freeform technology on the spectrometer is to enhance the field of view of the instrument, while meeting specific performance requirements The Offner spectrometer comprises three concentric mirrors creating a telecentric imaging system, by introducing the freeform element, the spectrometer's layout is optimized without altering its fundamental structure. The design study started with a layout employing only standard optics, and the maximum operable field of view was investigated (51mm). The implementation of a freeform polynomial to the grating’s surface resulted into a significant expansion of the field of view, up to 58mm. The chosen polynomials for the description of the new surfaces are Zernike FRINGE sag up to the 21st order coefficients. During this phase, all variables of the layout are free to be changed, including all positioning variables. Performance benchmarks such as smile and keystone distortion, Modulation Transfer Function (MTF), and dispersion grating specifications are consistently taken under control during the design development. This study underscores the efficacy of freeform optics in pushing the boundaries of optical technology, with promising implications for imaging systems and optical instrumentation optimization. The successful application of freeform optics in this Offner spectrometer design exemplifies its potential for advancing optical engineering in various fields
Luquet (A.). — Recherches sur la géographie botanique du Massif Central. Les colonies xérothermiques de l'Auvergne.
No full textOffner Jules. Luquet (A.). — Recherches sur la géographie botanique du Massif Central. Les colonies xérothermiques de l'Auvergne. . In: Revue de géographie alpine, tome 26, n°2, 1938. pp. 467-470
Offner, Jerome A., Law and Politics in Aztec Texcoco.
No full textSoustelle Jacques. Offner, Jerome A., Law and Politics in Aztec Texcoco.. In: Journal de la Société des Américanistes. Tome 70, 1984. pp. 223-224
J. A. Offner, Law and Politics in Aztec Texcoco
No full textDurand-Forest Jacqueline De. J. A. Offner, Law and Politics in Aztec Texcoco. In: L'Homme, 1986, tome 26 n°99. pp. 152-154
Jerome A. Offner, Law and Politics in Aztec Texcoco
No full textde Durand-Forest Jacqueline. Jerome A. Offner, Law and Politics in Aztec Texcoco. In: Caravelle, n°55, 1990. pp. 121-125
TSC-1 Offner Spectrometer Prototype Characterization
No full textThe Thai Space Consortium (TSC) has undertaken the development of an Offner spectrometer prototype for the TSC-1 satellite mission, aiming to enhance Earth observation capabilities. Through systematic parameter selection and radiometric analyses, optimal performance of the hyperspectral imager within established specifications was achieved in the previous study. The design phase involved selecting a two-mirror off-axis telescope coupled with the Offner spectrometer for its diffraction-limited performance. Rigorous testing validated the prototype’s alignment with simulated performance, affirming its ability to meet demanding Earth observation requirements. The experimental results demonstrate that the Offner spectrometer prototype has been successfully developed. The spatial resolution ranges between 21.0 and 24.1 µm, and the spectral resolution ranges between 7.3 and 8.7 nm, with no significant distortion. Furthermore, the signal-to-noise ratio at 550 nm is 100. This achievement positions the TSC at the forefront of innovative Earth observation instrumentation in Thailand, with implications for future space missions requiring precise and efficient hyperspectral imaging
Jerome A. Offner, Law and Politics in Aztec Texcoco
No full textde Durand-Forest Jacqueline. Jerome A. Offner, Law and Politics in Aztec Texcoco. In: Caravelle, n°55, 1990. pp. 121-125
Offner, Jerome A., Law and Politics in Aztec Texcoco.
No full textSoustelle Jacques. Offner, Jerome A., Law and Politics in Aztec Texcoco.. In: Journal de la Société des Américanistes. Tome 70, 1984. pp. 223-224
Robert Offner új orvoslástörténeti forrásközlése
No full textRober Offner, a most bemutatott könyv szerkesztője fáradhatatlanul
dolgozik az erdélyi orvoslástörténet elfeledett alakjainak
bemutatásán. Alig tíz éve az 1997-ben elhunyt művelődéstörténész,
Arnold Huttmann tanulmányait szedte össze egy hatalmas kötetbe
(Medizin in alten Siebenbürgen. Beiträge zur Geschichte der Medizin
in Siebenbürgen. Hora Verlag, Hermannstadt, 2000)
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