Static Fourier spectrometers are often used for spectral measurements of the ionosphere emissions. There are two main advantages of Fourier spectrometers (FS) - large geometric factor and high spectral resolution; these parameters are two orders better than for grating spectral instruments. ... In scanning Fourier spectrometer optical and electric modulation of signal is used to avoid this problem, for static Fourier spectrometer there are no such ways. ...

Armagh Planetarium Special Visitors . Images of the various people who we have been honoured to have visit the Planetarium . ... Right click on the larger image and choose 'save as' to save a copy. In Mozilla Firefox right click on image and choose 'view image' to open image in a new browser window or in Safari choose 'open in new window' . GALLERY . ... Historical Images . ... All images are Armagh Planetarium, if you would like to use any of them please contact us for permission. ...

... All rights reserved. ds. The New User Interface for the OVRO Millimeter Array Steve Scott and Ray Finch Owens Valley Radio Observatory, PO Box 986, Big Pine, CA 93513 Abstract. A new user interface for the OVRO Millimeter Array is in the early phase of implementation. ... The New User Interface for the OVRO Millimeter Array 51 The rectangles containing text on a light background are instances of the realtime data cell (RDC) that are the critical building blocks of the windows. ...

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

СТУДЕНЧЕСКИЕ ОЛИМПИАДЫ МЕХМАТА МГУ И. В. Аржанцев, 1 В. И. Богачев, 2 А. А. Заславский, 3 В. Ю. Протасов, 4 А. М. Райгородский, 5 А. Б. Скопенков 6 n=1 Мы приводим задачи всемехматовских олимпиад 2001 (второй тур), 2008 и 2009 годов, а также указания, решения и комментарии. ... 2008-1. ... Обозначим через m(k) максимальное число попарно не ортогональных векторов из {-1; 0; 1}2k , ровно k координат каждого из которых нулевые. (а) Докажите, что m(k) 22k-1 при нечетном k. (б) Докажите, что 80 m(4) 140. ...

... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Saturn . ... Star Atlas . ... stars . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Tour the Deep Sky . ... Lab mimicry opens a window to the deep interiors of stars and planets . ... PLANET | STARS . ... On Saturn, it would remain an insulator, and as such, an ocean-like envelope of undissolved neon could collect deep within the planet and prevent the erosion of Saturn s core compared to its neighbor, Jupiter. ...

... Обнаружение метана в атмосфере Марса . ... Мы сообщаем об обнаружении метана в марсианской атмосфере с помощью Планетарного Фурье-Спектрометра на борту аппарата ?Марс Экспресс?. ... Структура атмосферы и метеоданные похожи на наблюдавшиеся посадочным модулем Викинга-1 21 год назад на такой же широте, высоте и в такое же время года, но имелись различия, связанные с суточными эффектами и свойствами поверхности в месте посадки. ... Марсианское время" - общественный научно-популярный журнал о Марсе. ...