... Thomson's multiple window method of spectral estimationthomson provides a very good estimate of the power spectrum by measuring the energy contained within a collection of rectangular shaped frequency intervals. ... Often, much of the fine structure of a spectral estimate is due to noise. It should be stressed that while other methods of spectral estimation (such as the Welchoppenheim method) exist, the Thomson method is particularly noteworthy for its precisely defined rectangular frequency bins. ...

... Data extracted from CCD frames may be accompanied by error estimates, which can be used in determining weights in the general solution. These should be in the same intensity units as the data in the SIGNAL column. ... The column label for estimated errors is ESTERR. This column should not be used for ordinary photometric data (i.e., do not put estimates of ``photon noise'' here). ... If the data were expressed as magnitudes (column RAWMAG), any error estimates should also be in magnitudes. ...

... Countrates can, however, be estimated in a simple way, but with less accuracy than for example a maximum likelihood fitting method. Countrates are estimated using a countrate image. ... Multiplying this maximum correlation with gives an estimate for the source countrate. In a separate routine the best correlation for a given source for all different wavelet scales will be compared and the most appropriate wavelet scale will be used, in order to obtain the source countrate. ...

... We demonstrate through numerical simulations that model parameters estimated with our technique are essentially bias-free, even when the average number of counts per bin is 1. ... The IW technique avoids such biases by estimating through successive iterations, where for each iteration, j, , and the best-fit parameters are determined by minimization of . ... In our sample, we find that the minimum values and best-fit parameters converge after about 6 iterations. ...

. Space Telescope Science Institute . http://www.stsci.edu . Voice: (410) 338-1082 . help@stsci.edu .

January 1998 One of the great unsolved problems in software development is the task of estmating time required for a software project. ... Rather than focusing on causes, or theoretical approaches, I herein offer a practical guide to improving time estimates for the worst-case scenario, the dreaded Five Minute Task . ... deal with the compile-time errors you failed to anticipate: . ... install software: . ... deal with installed software changes crashing all systems at random intervals: . ... test: . ...

Next: BH+BH merging Up: The Present Situation in Previous: Observational Data . At present, it is possible to estimate binary NS merging rate in two ways: using the binary radiopulsar statistics observed and making various computations of binary stellar evolution. toPhinney,1991,ApJ, 380, L17 yr . ... 1991, ApJ, 397, L17 yr . ... toLipunov et al. ... We emphasize that although theoretical merging rates are systematically higher than observational ones, both estimates do not contradict each other. ...

Pulkovo NEO Page . ... NEA Accuracy Estimation . ... The estimation of accuracy of the current CCD observations of asteroids and comets is constantly performed at Pulkovo Observatory. ... The (O-C) values, so called "Observed" minus "Calculated" positions, characterize numerically the observations of any observatory, both professional and amateur, during a short period (one or several close nights). ... So the (O-C) values for these objects nearly entirely define the errors of observations. ...

... Главная . ... О метеоритах . ... Музей . ... О лаборатории . ... Фотокаталог КМЕТ . ... Пресса о метеоритах . ... Метеориты, лунное вещество, космическая пыль, ударные процессы - те области, где ведут исследования сотрудники лаборатории. ... Вы нашли метеорит! ... Новый метеорит Нагорный . ... Как добраться до ГЕОХИ . ... НАШ АДРЕС : Москва, 119991, ул.Косыгина, 19; тел. (7-495)-939-70-70; факс: (7-495)-938-20-54; e-mail: meteoritika @ gmail.com . Телефонный справочник ГЕОХИ РАН (PDF, 0.5 Mб) . ...

Atmospheric influence on the different radio-engineering system functioning . ESTIMATION OF ATMOSPHERIC OPTICAL CHARACTERISTICS AND REMOTELY SANSED IMAGE CORRECTION . ... Direct transmittance estimation results for 12 channels of the spectrometer CHRIS. ... We have managed to develop a direct method of estimating the discrete Normalized Atmospheric Point Spread Function (NAPSF) from available images alone, not using any external sources of information about the atmosphere. ... IRE RAS 1996-20 11 ...

The black hole (BH) masses in the centers of active galactic nuclei (AGNs) have been estimated for a sample of radio-selected, flat-spectrum quasars to investigate the relationship between BH mass and radio properties of quasars. ... In contrast to previous studies, we find no correlation between BH mass and radio power in these AGNs. We find a range in BH mass similar to that seen in radio-quiet quasars from previous studies. ... You can now find me in room 99 at Epping. ...

... Пьесы . ... Другие пьесы . ... Подумал Бог и подарил Человеку Пьесу: . Такой драгоценный подарок вы сможете найти на этом сайте. ... Здесь вы сможете найти тексты пьес, которых ранее не читали, которые уникальны своей свежестью. ... На сайте вы сможете найти пьесы, которые помогут сделать ваши театральные постановки еще интереснее и колоритнее. ... Подарите себе островок радости и счастья, прочитав интересную пьесу, которую вы сможете выбрать на свой вкус здесь - на сайте. ...

список проектов . представление проекта: . анализ проекта . учебный материал . ... Учебный материал . Ажурную ограду ты можешь сделать сам вырежи ее из сложенной цветной бумаги или сконструируй из узких полосок. ... Когда строились такие храмы, костюмы людей напоминали образы архитектуры . Какие разные бывают фонари! этот похож на хрупкий колокольчик, склонивший голову к земле. ... Ты можешь сам сконструировать фонари самой необычной формы. Бумага -замечательный материал. ...

... The Round Earth . ... Aristarchus around 270 BC derived the Moon's distance from the duration of a lunar eclipse (Hipparchus later found an independent method). ... Let R be the radius of that circle and T the time it takes the Moon to go around once, about one month. ... Viewed from Earth, a "new Moon" (occuring between the time a thin crescent is last seen before sunrise and the time one is seen shortly after sunset) happens when the Moon in its apparent motion around the sky overtakes the Sun. ...

... Планеты . ... Снимки космоса . ... Коллекция снимков русскоязычных астрофотографов . ... Солнечная система . ... Меркурий Венера ИСЗ Марс Юпитер Сатурн Уран Нептун Кометы . ... Парад" планет солнечной системы. ... Снимок кометы Хейла - Боппа, полученный на Сев. ... Снимки планет солнечной системы и космических аппаратов размещены с любезного разрешения сайта Astronominsk , авторы Константин Морозов , Юрий Горячко , Михаил Абгарян . ... Фотографии планет солнечной системы через телескоп . ...

... 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 . ...