1,344 research outputs found

    Mahnruf an die Diener der evangelischen Kirche / Neu hrsg. von Pfarrer Oehler

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    Mahnruf an die Diener der evangelischen Kirche / Neu hrsg. von Pfarrer Oehlerhttps://scholar.csl.edu/ebooks/1035/thumbnail.jp

    Image quality and high contrast improvements on VLT/NACO

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    NACO is the famous and versatile diffraction limited NIR imager and spectrograph with which ESO celebrated 10 years of Adaptive Optics at the VLT. Since two years a substantial effort has been put in to understanding and fixing issues that directly affect the image quality and the high contrast performances of the instrument. Experiments to compensate the non-common-path aberrations and recover the highest possible Strehl ratios have been carried out successfully and a plan is hereafter described to perform such measurements regularly. The drift associated to pupil tracking since 2007 was fixed in October 2011. NACO is therefore even better suited for high contrast imaging and can be used with coronagraphic masks in the image plane. Some contrast measurements are shown and discussed. The work accomplished on NACO will serve as reference for the next generation instruments on the VLT, especially those working at the diffraction limit and making use of angular differential imaging (i.e. SPHERE, VISIR, possibly ERIS).Comment: 14 pages, 5 figures, SPIE 2012 Astronomical Instrumentation Proceedin

    7 kirja Karl Morgensternile, Dorpat

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    http://tartu.ester.ee/record=b2502841~S1*es

    11 kirja Karl Morgensternile, Dorpat

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    http://tartu.ester.ee/record=b2502999~S1*es

    10 kirja Karl Morgensternile, Dorpat

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    http://tartu.ester.ee/record=b2501890~S1*es

    Glossarium Vindicum

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    Slovenec Janez Žiga Valentin Popovič (1705–1774), v času Marije Terezije profesor nemškega jezika na dunajski univerzi, je poleg drugih rokopisov zapustil tudi osnutek slovarja s kakimi tisoč slovenskimi in drugimi slovanskimi besedami, ki se hrani v Narodni in univerzitetni knjižnici v Ljubljani. Popovičevo delo, ki predstavlja zametek slovenske dialektologije in predznanstvena iskanja etimologij, so črpali in uporabljali mnogi (Marko Pohlin, Anton Breznik), širše dostopno pa postaja šele z objavo, ki je opremljena s spremnimi besedili ter kazali slovenskega in drugega slovanskega
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