Phase Retrieval Measurements of Antenna Surfaces Using Astronomical Sources Bojan Nikolic, John Richer, Richard Hills Mullard Radio Astronomy Observatory, Cavendish Laboratory, Cambridge, U.K. Abstract We present a novel technique for accurate measurement of the largescale errors in an antenna surface using astronomical sources and detectors. Out-of-focus images of compact astronomical sources contain a wealth of information about the telescope optics. ...

... All the galaxies are divided into 4 groups depending on the environment type; every subsample contains more than 10 galaxies. ... An effect of environments is seen both for the nuclei and for the bulges: if we consider the clusters (Virgo and Ursa Ma jor) and group centers as dense environments and the field and group periphery as sparse environments, then in the dense environments the stellar populations of S0s are in average older by 4­5 Gyr than in the sparse ones. ...

To see a Russian version of this page, click here . ... Bochkarev Nikolai Gennadievich . astrophysics researcher: . born: Moscow, May 19, 1947; . ... Jr. researcher Sternberg Astronomical Inst., ... Soviet (Russian) Working Group on Interstellar Matter, Moscow , 1979-; . ... Madison, 1991. ... ALocal Interstellar Matter, 1990, . Basic Physics of the Interstellar Matter, 1992; co-author: . ... Physics of Interstellar Matter, 1979; . ... All-Union Astronom. Geodesical Soc., ... Astronom. ...

... Report on Cosmic Call 1999 . ... Cosmic Call Sessions . ... This Report outlines methodology, hard- and software, which were developed to transmit first public Interstellar messages from Evpatoria Deep Space Center (EDSC), and describes four Cosmic Call Sessions, which were fulfilled in EDSC on May 24 and June 30 - July 1, 1999. ... Each Cosmic Call consists of two parts. ... Dutil Message, . ... The software for gathering all messages and creating the Cosmic Call stream, was written on C language. ...

... astro-ph/0303500 . ... В Архиве электронных препринтов появилась интересная и важная обзорная работа с юбилейным номером 0303500. Космический телескоп им. Хаббла . ... Благодаря столь широкому охвату читатель может узнать о множестве открытий последнего десятилетия в астрономии. Существенно и то, что Ливио не просто перечисляет открытия, он много рассказывает о физике явлений. ... Список ссылок занимает 15 страниц. ... Галактики на больших красных смещениях глазами Космического телескопа . ...

... MASTER Net is 56 square degrees per 1 exposition . ... 06 Dec 2015: GRB 151205B: MASTER-NET early optical observations GCN18665 . ... 18 Nov 2015: GRB 151118A: MASTER-NET optical observations GCN18613 . ... 12 Nov 2015: GRB 151112A: MASTER-NET optical limit GCN18591 . ... 07 Nov 2015: GRB 151107A: MASTER-NET optical observations GCN18565 . ... 31 Oct 2015: Five OTs detected by Global Robotic MASTER Net ATel8232 . ... 02 Oct 2015: GRB 151001B: MASTER-NET early optical observations GCN18380 . ...

In this version .. Uses Phidgets USB servo motor control . Provides telescope temperature sensors . Adaptable to Planewave Hedrick focusers and others using small brushed encoded DC servo motors . ... All-in-one standalone version . ... PyFocus provides for local or remote operation of an astronomical telescope focuser. While specific to the hardware we use for the Shared Skies programs at Moore and Mt. ... Latest version 1.0 updated July 23, 2012 . Hardware installation . ...

Last updated 22 October 2004 by JCB . Width (arcsec) Location Material Note 0.9 DIS Steel 1.0 3.5m Storage Quartz 1.1 ?? 1.2 DIS Steel 2.0" occulting bar; unpolished near edges 1.5 DIS Steel 1.6 ?? Does this slit really exist?) ... Does this slit really exist?) 2.0 3.5m Storage Quartz 5.0 DIS Steel NOTES: 'Locations' were as of October 2004. DIS" refers to slits which remain permanently availablein the so-called default slit wheel. ...

... Astronomy news . ... Saturnian Moon Shows Evidence Of Ammonia . Data collected during two close flybys of Saturn's moon Enceladus by NASA's Cassini spacecraft add more fuel to the fire about the Saturnian ice world containing sub-surface liquid water. ... In space, the presence of ammonia provides strong evidence for the existence of at least some liquid water. How could ammonia equate to liquid water inside an ice-covered moon in one of the chillier neighborhoods of our solar system? ...

... ASTRONOMICAL TELESCOPES . ... HOME . ... Home Products Telescopes Astronomical Telescopes . Recreational astronomical telescopes (ASTELE™) feature Maksutov Cassegrain or Maksutov Newtonian optical design. ... These telescopes (except ASTELE ™ 70, 95) are available in three configurations: OTA (Optical Tube Assembly), G (German Equatorial Mount) and EL (with motorized base). ... These telescopes are available in two configurations: OTA (Optical Tube Assembly) and G (German Equatorial Mount). ...

Общая Астрономическая Конференция > Все про астрономическое оборудование > Астрономическое оборудование . Есть перевод книги "Star Testing Astronomical Telescope . ... Поиск . ... Есть немного отредактированный текст книги Star Testing Astronomical Telescopes http://www.willbell.com/tm/tm5.htm . ... Может и астрономические книги переводить также? ... Лунные феномены (редкие, необычные явления) Жизнь астрономов-любителей Анонсы астрономических мероприятий Астрономические клубы Наш "Старлаб" . ...

... Конференц?я "Р?внодення 2016". ... Киевский клуб любителей астрономии "Астрополис" > . ... Астрософт (Модератор: tlgleonid ) > . Astronomical Net of Ukraine . ... 10 Апрель 2016, 04:19:28 . ... Новости . ... Бердянское общество любителей астрономии "ОРИОН" . ... Одесское общество любителей астрономии ?АСТРОДЕС? Портал белорусских любителей астрономии - BelAstro.Net . ... предыдущая тема следующая тема . ... 21 Декабрь 2011, 19:30:05 ? В общем рекомендую любителям астрономии ценный ресурс! ...

Stellarium 0.12.3 . ... Classes . ... ClassљList . ClassљIndex . ... Skybright Class Reference . Compute the luminance of the sky according to some parameters like sun moon position or time or altitude etc.. ... setDate (int year, int month, float moonPhase) . ... Set the moon and sun zenith angular distance (cosin given) and precompute what can be This function has to be called once before any call to getLuminance() More... љ . ... cos(angular distance between moon and the position) . ...

RUSSIAN . The Centre for Astronomical Data (CAD) of the Institute of Astronomy (INASAN) of the Russian Academy of Sciences was established in 1980 as a branch regional center of the Centre de Donnes Stellaire (CDS) with the purpose of astronomical data dissemination among Soviet and Eastern Europe astronomers and for providing the CDS with Soviet machine readable astronomical catalogues. The CAD archive is based on astronomical catalogues received from Strasbourg since 1980. ...

... Практическая астрономия ? Астрономия и компьютеры (Модераторы: Deimos , Ed_Vazhorov ) ? astronomical widgets . ... Сообщений: 2 512 . Рейтинг: +61/-1 . Stellarium Developer, Astrotop Member . ... Записан . ... Астрономия для школьников | ... Stellarium | ... Сообщений: 2 526 . ... Ответ #1 : 09.02.2006 [16:04:05] ? ... Сообщений: 1 351 . ... This widget allows the user to perform a very simple search in the NASA Astrophysica Data System (ADS). ... Opera Widgets: . ...

... Yerga Expedition . ... Novaya Yerga Expedition . ... I n 1662 a meteorite shower fell near the village of Novaya Yerga. ... In 2002, the Meteoritics Laboratory of the Vernadsky Institute of Geochemistry And Analytical Chemistry of the Russian Academy of Sciences (GEOKHI) organized an expedition to search for the location and any traces of the Novaya Yerga meteorite shower. ... After visiting the town of Kirillov, the expedition returned to Novaya Yerga, i.e. to near the village of Nekrasovo. ...

. ИЗГОТОВЛЕНИЕ . АСТРОНОМИЧЕСКИХ ПРИБОРОВ И ОПТИКИ . ДЛЯ ЛЮБИТЕЛЕЙ И ПРОФЕССИОНАЛОВ . FABRICATION . OF ASTRONOMICAL INSTRUMENTS AND OPTICS . FOR AMATEURS AND PROFESSIONALS . о компании . оптика . телескопы . контакт . 300 мм телескоп Ньютона на установке Добсона . about company . optics . telescope . contact . Тел./Факс.536-89-22 .