RECREATIONAL TELESCOPES . ... ASTRONOMICAL TELESCOPES . ... Home Products Telescopes Astronomical Telescopes ASTELE™ 152MN . ... Whatever eyepiece you're using at the time is your finder eyepiece. ... 152MN is 4.4, so, unlike telescopes with much longer ?-ratios, you're able to use low magnification (27.4 X, 2.3° with the 25 mm PlЖssl eyepiece) which produces bright images and wide fields of view for those dim galaxies, nebulae, and very large star clusters, but the ASTELE? ... BK7 optical glass . ...
Добро пожаловать, Гость . ... Телескопостроение, оптика (Модераторы: I.A.R. , Ivan7enych ) ? Один вопрос по ZEMAX . ... Гость . ... Записан . ... Проблема в чем: Plynomial задается как z=sum a_i E_i(x,y), а мне надо чтобы степени были для координаты по оптической оси, при использовании поворотов тоже проблема, так как и x, и y входят только с квадратом. А в zemax все поверхности (если не ошибаюсь) задаются как z=f(x,y), но никак не с квадратом ( в смысле z^2=g((x,y) ). ...
... Field of research: Extragalactic astronomy. ... NASA Astrophysics Data System (ADS) Abstract Service . ... CADC Home Page . ... CCD Images of Galaxies . ... RUSSIAN LINKS . ... UA Astronomy Personal Home Page - Bill Keel . ... The Shape of the Rotation Curves of Edge-on Galaxies, by A.V.Zasov and A.V.Khoperskov, 2003. ... A Thickness of Stellar Discs, by A.V.Zasov, and D.V.Bizyaev, 2003 . Minimum Velocity Dispersion in Stable Stellar Disks, by A.V.Khoperskov, A.V.Zasov, and N.V.Tyurina, 2003 . ...
... Imaging GRIN Rod Lens (HAG's) | Relay Rod Lens (LAG's) | ... The Refractive Index Distributions (RID) in GRIN lens preforms are made by multi-stage optimized ion-exchange diffusion between silicate mineral glasses and salt melts. ... In the LAG lenses - L ow A perture GRIN the nature of the changing of refractive index in glass via ion-exchange lies mainly in molecular volume increase. ... LAG lenses are specially treated to create the dark anti-flick surface coating (Fig.2). ...
... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...
Super Rocket Targets . NPO MOLNIYA has been designing rockets-targets for over 30 years using the great experience in crea-ting anti-aircraft guided rockets (AGR) for C-25M. On the basis of B-300 anti-aircraft rockets which expired their service life, there were designed, tested and put into the serial production the following types of the rocket - ... The analogue of this system successfully passed the state tests with the ZVEZDA-4 rocket-target. ...
... part 1 | ... Part 3 . The new circuit of global tectonics of the planets and their satellites . ... The "too hot" substance (magma) is formed of combination of different sort of atoms of chemical elements, spontaneously arising in the entrails of the pre-Earth cosmogenic vortex (and equal in entrails of other celestial object of spherical form). ... The water dropped out from the last it gradually was condensed and formed the widths of uniform Global ocean. ...
Инженерная графика (ИГ) как учебная дисциплина о правилах построения и оформления технических чертежей базируется на фундаментальных положениях начертательной геометрии (НГ) о проецировании исследуемого объекта на две, три и более плоскостей проекций. ... Инженерная графика: . ... Оценивая результаты выполнения текущих заданий и зачетных работ по инженерной графике курсантами обеих специальностей, можно прийти к такому выводу: изучение НГ по программе дисциплины 'Начертательная геометрия. ...
GCVS Variability Types and Distribution Statistics of Designated Variable Stars According to their Types of Variability ======================================================================== I. GCVS Variability Types. ... Amplitudes usually do not exceed 0.1 mag. ... RR Variables of the RR Lyrae type, which are radially-pulsating giant A-F stars having amplitudes from 0.2 to 2 mag in V. Cases of variable light-curve shapes as well as variable periods are known. ... RV Variables of the RV Tauri type. ...
... A Р?galitР? d'objectifs, elles permettent d'obtenir des grossissements plus considР?rables, parce que les rayons lumineux qui traversent les lentilles perdent moins par l'absorption que par la rР?flexion sur le miroir mР?tallique des tР?lescopes. ... Le tР?lescope des montagnes Rocheuses. ... Qu'allaient-ils dР?couvrir dans le champ de ce tР?lescope qui grossissait quarante-huit mille fois les objets observР?s? Des populations, des troupeaux d'animaux lunaires, des villes, des lacs, des ocР?ans? ...
... What are mechanisms of secular evolution? ... Internal mechanisms of secular evolution may b e: · bar instabilities in dynamically cold disk galaxies , · deviations from circular rotation due to non-axisymmetric gravitation p otential effect which may b e produced by planar structures ... gravitational and energetic, effects of nuclear sup ermassive black holes they may provoke as attraction as well expansion, · certain gas expansion by galactic winds and fountains, etc ...
. Composition | Objectives | Capabilities and samples | Request for work | Back to main page . If you have any questions, please contact us: rp@iszf.irk.ru . http://esceir.iszf.irk.ru/lchmen/skhema2en.htm . Last modification: 2.06.01.
... astro-ph . ... Aims: We aim for an understanding of the morphological and spectral properties of the supernova remnant RCW~86 and for insights into the production mechanism leading to the RCW~86 very high-energy gamma-ray emission. ... Studies of the morphological correlation between the 0.5-1~keV X-ray band, the 2-5~keV X-ray band, radio, and gamma-ray emissions have been performed as well as broadband modeling of the spectral energy distribution with two different emission models. ...
... Р?С?С?С?Р?Р?Р?Р?РеС?Р?С?Р?РеР? ... Launched on February 17, 1996, the Near Earth Asteroid Rendezvous (NEAR) mission is to be the first of NASA's Discovery missions, a series of small-scale spacecraft designed to proceed from development to flight in under three years for a cost of less than $150 million. ... The ultimate goal of the mission is to rendezvous with and achieve orbit around the near Earth asteroid 433 Eros in February, 1999, and study the asteroid for approximately one year. ...
... The spectrum of the brightest star, our Sun, shows several dark gaps perpendicular to the flow of it’s colours (figure 1). These so called spectral absorption lines where discovered in 1802 by the English scientist William Wollaston. ... Some stars as Pollux show a spectrum similar to that of our sun with strong Ca II and Fe II lines, others as Sirius or Vega show strong absorption lines of hydrogen, others, as Mira show very complicated spectra due to molecular absorption lines (see figure 5). ...
Решение элементарных задач на построение евклидовыми инструментами на модели Пуанкаре (в круге) плоскости Лобачевского Автор работы Беспрозванных Анна Место выполнения работы МОУ «Гимназия ?17», 11 класс, Пермь Научный руководитель Шеремет Г.Г., каф. геометрии ПГПУ Евклидова геометрия - не единственно возможная геометрия для описания окружающей нас действительности. ... Из литературных источников мы узнали общие положения геометрии Лобачевского и описание построения модели Пуанкаре в круге. ...
Меркурий . ... Страница: История "Mariner-10" , КА "Messenger" NASA , 1-я встреча Messenger , Итог 1-я встречи , 2-я встреча Messenger , 3-я встреча Messenger , Выход на орбиту , Полгода на Меркурии , Год на орбите , Быть или не быть? Завершение миссии , Галерея Messenger ; . ... Отдельная страница/ссылка на новость: Магнитное поле Меркурия . ... В частности, магнитная полярная шапка, где поверхность планеты открыта для влияния межпланетной среды, гораздо больше на южном полюсе. ... MESSENGER . ...
... В труде, озаглавленном 'О шаре и цилиндре', есть такие слова: 'Я называю выпуклыми в одну и ту же сторону такие поверхности, для которых отрезки, соединяющие две точки, будут... находиться по одну сторону от поверхности'. ... Плоскость состоит из точек. Точки плоскости будем обозначать, как обычно, большими латинскими буквами А, В и т.д. Через каждые две различные точки можно провести единственную прямую. ... Множества точек плоскости называют также плоскими фигурами, или просто фигурами. ...
... A.Tsivilev (Pushchino Radio Astronomy Observatory) "Investigation of Orion A nebula by radio recombination lines". ... T.D.Dorokhova (Astronomical observatory of Odessa national university) «Researches of rapidly oscillating Ap stars». ... N.V.Grabko (Odessa State Ecological University), M.I.Ryabov (Odessa Observatory of IRA NANU) "Space Weather and us: influence of change of a condition of solar and geophysical activity on reaction of various systems of an organism of the person". ...
... Публикации: "Odessa Astronomical Publications", 1997, vol. ... There are four basic forms (REGISTRATION, HOTEL RESERVATION, PAPER % CONTRIBUTION and PAYMENT) to be completed and returned to the CONTACT % ADDRESS mentioned below. ... SUMMER SCHOOL 10 Dundee Remote Sensing Summer School 49 Scottish Universities Summer School in Physics Physical Processes in the Coastal Zone: Computer Modelling and Remote Sensing 12th August to 29th August 1997. ...