TWO IMPORTANT ISSUES FOR FFT SPECTROMETERS June 28, 2003 Carl Heiles ABSTRACT We discuss two important issues for power spectra derived from FFTing a time series. These are weighting, which eliminates spectral leakage, and \overlapping the chunks", which eliminates the nonessential increased variance that results from dividing the time series into chunks. ... We have M consecutive chunks of N-point time series, so that we have a continuous time series of length NM with no gaps. ...
... Выложена полная версия каталога 2MASS в формате SIMFOV и версия программы, поддерживающая этот каталог. ... Звезды в поле зрения изображаются фигурами (кружки, крестики, квадраты), размер которых пропорционален блеску, а цвет определяется спектральным классом, если в каталоге спектр указан. Для каталога TYC_2 звезды изображаются цветом лишь при наличии файла TYC_2.ADD, в котором содержится информация о величинах BT и VT. ... Вывод информации о звездах в текущем поле зрения в файл SIMFOV.OUT . ...
... Moon . ... Earth Satellites . ... M42 Orion Nebula (M42) showing complete nebulous complex, including M43, and the combined emission/reflection nebulous complex consisting of NGC 1973, NGC 1975, NGC 1977 (left of frame).( ... Our next spooky spectacle is not too far away as its hiding around the right foot of Orion, at the bright blue supergiant star of Rigel shining like a torch in the dark, and this stellar torch lights up a mischievously secret nebula, IC2118 or the Witch Head Nebula ! ...
... Ciel Espace, le magazine qui vous guide toujours plus loin . ... les plus belles images de l'Univers dУ?cryptУ?es pour vous . ... des pages consacrУ?es Уљ la publication de vos photos Mais c'est aussi une vraie communautУ? avec laquelle partager votre passion et nourrir votre curiositУ?. Accueil Lire/Voir/Ecouter Lire/Voire/Ecouter . ... Proposant de nombreuses destinations selon le mois de l'annУ?e, ce guide vous offrira des conditions mУ?tУ?o idУ?ales pour dУ?couvrir les ciels lointains. ...
... Home Articles NYC Urban Starfest ? Background & History of the Event . ... Urban Starfest in Central Park . ... Beyond New York City . ... A History of the First Forty Years of the Amateur Astronomers Association . ... NYC Urban Starfest - Background History of the Event . ... Today the NYC Urban Starfest, while somewhat smaller in nature & scope, but still a most wonderful event, is solely coordinated and directed by the Amateur Astronomer?s Association and the NYC Urban Park Rangers. ...
АстроФест XVIII Всероссийский фестиваль любителей астрономии и телескопостроения . 21 - 24 апреля 2016 г. О фестивале . Что такое ?АстроФест? ... В программе . В программе фестиваля . ... Фотогалереи АстроФестов . Астрофест-2001 . Астрофест-2006 . Астрофест-2015 . ... Видео об ?АстроФесте? Буклеты ?АстроФеста? ... Программы прежних лет . ... Форум . ... О программе ?АстроФеста? ... 4 года . ... Апрель 2016 . ... Май 2014 . Апрель 2014 . ... 2002-2016 "АстроФест" . ...
... Developed by AMD and key industry partners, the Super7 platform supercharges Socket 7 by adding support for 100-MHz and 95-MHz bus interfaces and the Accelerated Graphics Port (AGP) specification and by delivering other leading-edge features, including 100-MHz SDRAM, USB, Ultra DMA, ACPI, and PC 98. Other planned enhancements based on the AMD-K6® processor family include support for a full-speed backside L2 cache and an optional frontside L3 cache. ... AMD had revenues of $2.4 billion in 1997. ...
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Ссылки http://www.arcetri.astro.it/irlab/doc/library/amd/super7wp.pdf -- 55.6 Кб -- 07.10.1999 Похожие документы
... Lyndon B. Johnson Space Center . ... Joan E. Higginbotham . NASA Astronaut (former) . ... AWARDS: NASA Exceptional Service Medal; Keys to the Cities of Cocoa and Rockledge, Florida; Group Achievement Award for STS-26 Return to Flight; Kennedy Space Center Public Affairs Certificate of Appreciation for Service; Commendation of Merit for Service to the Department of Defense (DOD) Missions; Presidential Sports Award in bicycling and weight training; Outstanding Woman of the Year ...
Разработка, исследование и изготовление мощных полупроводниковых лазеров, излучающих в диапазоне длин волн 800 - 1800 нм. ... 30-летний опыт работы по разработке и изготовлению полупроводниковых лазеров . ... Диапазон длин волн - 800 - 1800 нм . ... Ознакомление с физическими и технологическими принципами работы мощных импульсных полупроводниковых лазеров с интегрированным тиристорным переключателем . ... Мощные импульсные полупроводниковые лазеры - физические основы и практическое применение . ...
President's Message STAR FIELDS Newsletter of the Amateur Telescope Makers of Boston Including the Bond Astronomical Club Established in 1934 In the Interest of Telescope Making & Using Vol. ... 6 June 2012 We have a fresh long range plan for the club! ... Bob has written a paper on the history of Venus transits for publication on the Sky and Telescope web page at skyandtelescope.com and it will run in two or three installments on the web page during the next few weeks from the date of the meeting. ...
... Each pixel has its nominal position at the center of the integral interval. ... We call this normal sampling because both the integral and sampling intervals are equal to the pixel size . x D Integral interval x D 1/ 2 Sampling interval x D Integral interval x D Sampling interval x D Integral interval x D Sampling interval ( ) n c k ( ) n k * 1 Kernel Normal sampling 0 0 1 1 1 0 0 1 1 2 0 0 1 1 0 x D 1/ 2 Integral interval x D 1/ 2 Sampling interval ( ) a x ...
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Ссылки http://www.stecf.org/conferences/adass/adassVII/reprints/wun.ps.gz -- 97.5 Кб -- 12.06.2006 Похожие документы
... 9 AAAP meeting (8:00 Peyton Hall). ... November 2004 Number 10 From the Director Lunar Eclipse. ... The ancient Greeks first inferred that the earth was round from observing eclipses of the moon. ... Please pay $40 to AAAP, c/o Ms. Jane Lanahan 335 Wayland Rd, Cherry Hill NJ 08034 Simpson Observatory (609) 737-2575 General Membership Meeting Director Rex Parker called the meeting to order at 8:05 PM. 53 club members, guests and general public were in attendance. ...
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Ссылки http://www.princetonastronomy.org/newsletters/11_2004sidereal.pdf -- 542.8 Кб -- 02.11.2004 Похожие документы
Sp ecific features of differential motions in the DIMM V. Kornilov, B. Safonov May 28, 2010 1 Intro duction Differential image motion monitor DIMM widely used in studies of optical turbulence, is destined to measure the integrated effect of the Earth's atmosphere on the image quality. ... In the work of Martin, they are obtained by gradual spatial filtering 1 of the power spectrum of phase perturbations in the assumption of Kolmogorov's model of the optical turbulence (OT). ...
... Properties of Stellar Populations in Isolated Lenticular Galaxies I. Yu. ... The resulting average ages of the stellar population in bulges and discs fill an entire range of possible values from 1.5 to 15 Gyr which indicates the absence in the isolated lenticular galaxies, unlike in the members of groups and clusters, of a certain epoch when the structural components are formed: they could have been formed at a redshift of z > 2 as well as only several billion years ago. ... 69 NGC 2350 No. ...