... More information on books, telescopes, clubs, etc. is available in the Getting Started section. ... For more information call 617-495-7461. Boston University Astronomy Department - Public telescopic observing is held every clear Wednesday night. ... Boston Museum of Science - For more information and admission prices call 617-723-2500. ... For information and admission prices call 508-929-2700. ... Springfield Telescope Makers , VT. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... The conference will be also partially hosted by the Steklov Mathematical Institute, Gubkin 8, 119991, Moscow . The nearest metro stations are: Akademicheskaya (orange line) from which there is a 15-minute walk or Leninsky Prospekt (orange line) and Universitet (red line) from which one may take a tram No. 3 or 39 to the stop ?ulica Gubkina?. ... The location of the conference room at the building of the Steklov Institute will be announced later. ... Location of the Steklov Mathematical Institute . ...

Measurement of Sky Brightness at the Iranian National Observatory Davoud Afshari1 and Sadollah Nasiri1,2 1Physics Department, Zanjan University, Zanjan 45195-313, Iran; Institute for Advanced studies in Basic Science (IASBS), Zanjan 45195-1159, Iran; Measurement of light pollution 2 Introduction Among 34 candidate sites at the central part of the country, 5 sites namely Garkesh (in Kashan ), Kolahbarfi(in Kashan ), Deynava (in ... One of these is light pollution. ...

... Набор Vintaj "Цветочек с бусинами" состоит из 4 декоративных элементов, изготовленных из металла в виде цветков. ... Декоративные элементы в наборе имеют оригинальный дизайн. ... Диаметр элемента: 24 мм. Тип: газовая; Рабочая поверхность: эмаль; Объем духовки: 50 л; Класс энергопотребления: - . ...

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

... We then take dark subframes in each binning mode (to check that binning isn't making a difference) with the exposure time set to 1ms (to ensure that no stray light is recorded). ... Dark frames with old and new drivers in place (while observing): 1000 frames in t0 mode 1000 frames in d0 mode 400 frames in r0 mode - in three binning modes(1,2,4) and exposure time 1ms, subframe of any size will do (position doesn't matter either). ... Take 50 frames in each mode. ...

Общая Астрономическая Конференция > Товары для астрономов > Полезное для астрономии . Книга Light_and_Dark . ... Поиск . Сообщения за день . ... Olegus . ... Сообщений: 2,999 . ... Отправить личное сообщение для Olegus . Найти еще сообщения от Olegus . ... Звездочет . ... Отправить личное сообщение для Звездочет . Найти еще сообщения от Звездочет . ... В общем книги прекрасно дополнят друг друга . ... Созвездия (поиск и описание) .. Созвездия южного неба (поиск и описание) .. ...

... The Seasons . ... Section #1 Stargazers and Skywatchers described the observed motion of the Sun across the sky, in different seasons of the year. ... If the Earth's axis were perpendicular to the ecliptic, as in the drawings here, the Sun's position in the sky would be halfway between the celestial poles, and its daily path, seen from any point on Earth, would stay exactly the same, day after day. Each point on Earth would be carried around the axis AB once a day. ... The Sun and Seasons . ...

... In the center is a massive red galaxy 7 billion light-years from Earth that acts like a cosmic magnifying glass, distorting the light from an even more distant galaxy. The result is a spectacular Einstein ring image of the background galaxy. ... Using this gravitational lensing effect the mass of the dark galaxy was found to be 200 million times the mass of the Sun, which is similar to the masses of the satellite galaxies found around our own Milky Way, but is 9.8 billion light-years further away. ...

Classification of Sunspot Groups Using SOHO/MDI Magnetogram and White-Light Images Tuesday, November 3, 2009 Background/Motivation · Sunspot classification is (for the most part) done manually by experts in the field. ... Tuesday, November 3, 2009 The Plan An automatic sunspot detection and classification procedure will be developed using SOHO/MDI magnetogram and whitelight images. ... Tuesday, November 3, 2009 Then, we cut out a region on the white-light image that matches the magnetogram. ...

A computer controlled low light photometer for nightglow observations. Hardware units of portable photometer for low light measurements, especially night glow emission is described. ... Interface card contain three channels of 24 bit counter, 4 channels of 12 bit ADC and the buffer bus for the controlled motors of the altazimuthal fork mounting and filters wheel, the position encoders. ... Where N( ) is output signal photometer generated input light flux F( l ) . ... PMT # . 599 . ...

... Астрофотография . ... Наблюдения и астрофотография . ... Справочная информация . ... 1) Light = (Signal * Flat Signal) + Dark + Offset . где Signal - это изображение целевого объекта, который мы хотим получить в идеальных условиях. ... Light - (Dark + Offset) . ... Flat Signal . ... 3) Flat Signal = Flat Light - (Flat Dark + Flat Offset) . ... Flat Light - (Flat Dark + Flat Offset) . ... Аналогично, Flat Dark ' = Flat Dark + Offset . ... Light - Dark' . ... Flat Light - Flat Dark' . ...

... 8, ``Celestial Mechanics'', 2002 Earth penumbra effects on AES motion taking into account the refraction and the extinction of the light in the atmosphere A. M. Fominov Institute of Applied Astronomy, St. Petersburg, Russia The perturbing acceleration F of the Artificial Earth Satellite (AES) due to the solar ... In step 1, the table of the shadow function values with the angle distances d between the solar disk and the earth disk edge may be calculated. ...

... The eleven years cycle of Sun's activity is approaching its maximum! From August 24th to 29th a team of astronomers, engineers and astro-photographers will travel to southern Greenland to observe the Northern Lights (Aurora Borealis), a phenomenon expected to be particularly spectacular during this period. ... Auroras . The wonderful celestial spectacle of the aurora occurs when very energetic particles from the Sun reach the Earth's atmosphere via the solar wind. ... About GLORIA . ...

. Cosmology . Very Early Universe . Cosmic Microwave Background Anisotropy . Dark Matter Models . Large Scale Structure . High Energy Astrophysics . Active Galactic Nuclei . Astrophysics of Compact Objects . Accretion Disks . Scientific Staff:

... Continuous Wavelet Transform in Quantum Field Theory: An application to the Casimir effect . ... Nuclear structure effects in light muonic atoms . A.A. Dzyuba on behalf of the LHCb collaboration . Overview of LHCb results . ... Korzinin, S.G. Karshenboim . The relativistic two-loop electronic-vacuum-polarization contributions to Lamb shift in muonic hydrogen . ... Problems in determination of the Planck constant and redefinition of the SI units in terms of fundamental constants . ...

On' failures in the NIRSpec MEMS ST-ECF Instrument Science Report NGST 2002-02 The effects of `on' failures in a MEMS array for the NGST NIRSpec Santiago Arribas, Robert Fosbury Peter Jakobsen --1-- ST-ECF Instrument Science Report NGST 2002-02 The effects of `on' failures in a MEMS array for the NGST ... Assuming that the spectrum of a single facet uses 2000 detector pixels, only 0.01% of `on' failures is acceptable (i.e., 400 facets in a 2k в 2K MEMS array). ...

... Contacting and discussing with people sharing your interests, participating in night sky observations with telescopes as well as a large choice of astronomical books, magazines and video-tapes out of our club library. ... A reasonable compromise for observing both planets and brightest deep sky objects ( nebulae, galaxies) are either a 4 to 8 inch mirror telescope ( Newton, Schmidt-Cassegrain ) or a 3 to 4 inch refracting ( lens) telescope. ... Where can I buy a telescope in Luxembourg ? ...

... This is usually defined as the direction pointing toward the center of the primary body. ... NODE: The place where the plane of one orbit crosses the plane of another. ... ORBITAL PLANE: The flat surface that would result if every point on the orbit of a body was connected to the center of its primary. ... PENUMBRA: The edge of the primary body's shadow. ... PERIOD : The time required for one body to orbit the primary body. ... PROBE: A vessel designed to pass and observe an astronomical object. ...

Here are the images reconstructed using our Static EIT Reconstruction Server . You can add your images to the gallery. This is possible after data file uploading and image reconstruction. Object: thorax . Data type: POLAR, 16 electrodes . ... This is static EIT image of healthy male thorax. ... This is static EIT image of the left crus (lower part of the leg) obtained with dipole current injection and true dipole reconstruction algorithm (TRUEDIP keyword in the data file). ...