... of the shadowing on the right side of the image and the depth of the shadowing are ... shadows observed are straight across the detector and have fairly fast transitions ...
... for this are twofold: (1) the slit windscreen is physically farther from the telescope and so it casts a shadow at a smaller off-axis angle (effectively shadowing the telescope at approximately ± 20-25 degrees off-axis) and (2) the black shroud can itself ...
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Ссылки http://www.apo.nmsu.edu/Telescopes/eng.papers/SPIEpapers/0902straylight.pdf -- 1606.0 Кб -- 20.09.2002 Похожие документы
... -instrument capability: manual at first; heading toward multi-port fast change capability [got it] Excellent pointing and tracking: 1 arcsec goal; can usually point to within ~few arcsec [or better] Excellent delivered image quality: 0.5 ...
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Ссылки http://www.apo.nmsu.edu/Telescopes/ARCprogress/051214ARC20Anniv/Presentations/History/BG_20-yrAnniversaryTalk.pdf -- 953.7 Кб -- 01.08.2014 Похожие документы
... for this are twofold: (1) the slit windscreen is physically farther from the telescope and so it casts a shadow at a smaller off-axis angle (effectively shadowing the telescope at approximately ± 20-25 degrees off-axis) and (2) the black shroud can itself ...
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Ссылки http://www.apo.nmsu.edu/arc35m/Instruments/ARCTIC/Development/TechnicalDocuments/ScatteredLight/Pompea%20Stray%20Light%20Report%202001.pdf -- 2893.1 Кб -- 07.02.2014 Похожие документы
... maximize its stiffness, all possible use is made of the secondary shadow area and the corresponding large primary perforation ... Since there is ample room in the secondary shadow, a circular rather than elliptical flat will be used since it is a more ...