... Spherical aberration, coma, and astigmatism are also easily observed using the star test. ... Off-axis images are complex. ... Fig. ... Diffraction by a circular aperture as a function of defocus for no aberration Airy Disk 1 wave defocus Less than 1 wave defocus Fig. ... Diffraction by a circular aperture as a function of defocus for third-order spherical aberration Paraxial Focus Small distance inside paraxial focus Moderate distance from marginal focus Immediate neighborhood of marginal focus Fig...

... Научная панорама ? arxiv:1411.6009 Множественные изображения сверхновой, значительно усиленной линз . ... arxiv:1411.6009 Множественные изображения сверхновой, значительно усиленной линзированием на галактике раннего типа в скоплении (Multiple Images of a Highly Magnified Supernova Formed by an Early-Type Cluster Galaxy Lens) . ... Впервые поймали множественное изображение сверхновой, сформированное гравитационной линзой. ... Появилось новое изображение сверхновой Рефсдала! . ...

MAIN PAGE . ... Nova Cygni August 1975! ... 1975/76: Comet West! ... Dr. Richard West (4th from left) & AAL members visiting SES Betzdorf on occasion of our club's 25th anniversary - October 1996 . Comet West Information . ... It was the brightest comet visible from Earth since Comet West in 1976. ... 1997: Comet Hale-Bopp! ... Thus Comet Hale-Bopp never got closer to Earth than Earth gets to the Sun. ... Comet Hale-Bopp JPL Page . ... 1999: Total solar eclipse over Luxembourg! ...

The Mass Function of Dark Halos in Sup erclusters and Voids E. P. Kurbatov1 1 ,* Institute of Astronomy of the Russian Academy of Sciences A mo dification of the Press­Schechter theory allowing for presence of a background large-scale structure (LSS) ­ a sup ercluster or a void is prop osed. The LSS is accounted as the statistical constraints in form of linear functionals of the random overdensity field. ... Variance as a function of mass for different sets of constraints. ...

... http://www.heavens-above.com/skychart.aspx?SL=1 =1 =56.19448 =94.74609 =Unspecified =200 =CET . ... Далее указаны непосредственные значения широты (lat=56.19448) и долготы (lng=94.74609) места наблюдения, а также его название (loc=Unspecified - т.е. в данном случае не определено), высота над уровнем моря в метрах (alt=200) и временная зона - tz=CET - Всемирное эфемеридное время - сайт сам посчитает вашу поправку за долготу, которую вы можете подправить, если в этом возникнет необходимость. ...

. To IUM main page . Algebraic groups and Lie groups(background) . Arithmetic group -what is it? . Cofinite and cocompact arithmetic subgroups. Constructions and examples. The Tamagava measure and local calculations in SL(2). Covolumes of the arithmetic subgroups in SL(2) (Borel Theorem). Congruence-subgroups and the congruence problem in SL(2)(Serre theorem). Hyperbolic 3- orbifolds and arithmetic groups in SL(2).

sw@newmail.ru THE PROBE LAYER METHOD IN THE CALCULATIONS OF CONTRIBUTION AND RESPONSE FUNCTIONS S.G.Mozharovsky Ussuriysk Astrophysical Observatory of FEB RAS, Ussuriysk, Russia sw@newmail.ru The method of probe layer for the calculation of response and contribution functions is discussed. ... This allows us to turn from the response functions to the contribution functions calculated with help of the probe layer (CFPL). ... V- VMAX . ... Solar Phys., v.136, p.239-250. ... Solar Phys., v.35, p.11-29. ...

... 0,50-0,59 (0,50-0,59) µm . ... Swath Width . ... at end of visibilty area . ... Visibility Area Width . ... Ground Resoultion in Nadir: . along swath . ... across swath . ... Ground Resolution at End of Visibilty Area: . ... 200 lines per second . ... at least 200 . Ground resolution corresponds to normal flihgt altitude 650 km. For more information send a mail to: info@sputnik.infospace.ru . ...

An Electronic Version of Volume I of the General Catalogue of Variable Stars with Improved Coordinates N.N. Samus', V.P. Goranskii, O.V. Durlevich, A.V. Zharova, E V. Kazarovets, E.N. Pastukhova, M.L. Hazen, and T.M. Tsvetkova ======================================================================== Astronomy Letters, Vol. ... This version incorporates the name lists of variable stars from no.67 to no.76 for the same constellations. ... GSC - The Guide Star Catalog (Lasker et al. ...

CLEAN Map ps -- is a plot of the naturally weighted CLEAN image. The lowest contour levels (2 steps) on image is plotted at "clev" levels [Jy/beam], the peak brightness -- "max" values [Jy/beam]. The dashed contours indicate negative flux. The beam is shown in the bottom left corner of the images. The plot is in postscript format.

The Ministry of Education and Science of the Russian Federation Samara State Aerospace University (National Research University) CONCEPTUAL AIRCRAFT DESIGN Term Project Guideline SAMARA 2011 629. ... THE PROJECT CONTENT, VOLUME AND SUBJECTS The term project "Conceptual airplane design" is carried out according to curriculum for MSc of the specialty 160100 "Aircraft construction" and Msc program "The airframe design and CALS-technologies" developed and implemented in SSAU. ... Airplane design /S.. ...

... Fifteen years ago, on February 20, 1986 the launching of the Core Block marked the beginning of the Mir Orbital Station construction. Currently the Mir Station consists of 6 modules. ... The Mir Station total mass is near 130 tons. ... For sinking unburned Mir Station fragments after reentering atmosphere a Southern Pacific Ocean area limited by the following point coordinates: 53 њ S, 175 њ W; 23 њ S, 175 њ W; 23 њ S, 132 њ W; 30 њ S, 127 њ W; 30 њ S, 90 њ W; 53 њ S, 90 њ W is choosen. ...

Электронная библиотека астронома-любителя. ... архив RSN . ... Ru.Space.News: . Март 1998 . ... Дата: 03 марта 1998 (1998-03-03) От: Alexander Bondugin Тема: Detailed Images From Europa Point To Slush Below Surface Привет всем! ... Recently transmitted from the Galileo spacecraft, the images provide three key pieces of evidence supporting the idea that water may lurk beneath Europa's surface. ... Europa's blindingly bright ice surface makes it one of the brightest objects in our solar system. ...

... РЕШЕНИЕ ЗАДАЧ СФЕРИЧЕСКОЙ АСТРОНОМИИ . ... Вычисление точных топоцентрических эфемерид планет . ... В качестве примера в нем приведены исходные данные сервера для расчета эфемерид Марса. Ниже списка располагаются четыре кнопки для модификации исходных данных. ... Через некоторое время, которое в основном определяется скоростью передачи данных по сети, на экране появиться большая таблица рассчитанных значений параметров, снабженных многочисленными комментариями. ...

... A non-linear relationship is observed between the sky brightness on clear and overcast nights, with a change in behavior near the rural to urban landuse transition. ... The great variation in skyglow radiance observed from site-to-site and with changing meteorological conditions underlines the need for a long-term international monitoring program. he introduction of artificial light has caused an unprecedented disruption to the nighttime environment over large areas of the Earth. ... Data processing...

ABSTRACTS 10-th International Gamow Summer School "Astronomy and beyond: Astrophysics, Cosmology and Gravitation, Cosmomicrophysics, Radio-astronomy and Astrobiology" (Ukraine, Odessa, Chernomorka, 23-28 August, 2010) MEMORIAL SESSION SERGEY ALEKSANDROVICH SNEGOV (1910-1994) ­ OUSTANDING PHYSICIST, COSMOLOGIST, ASTRONOMER AND WRITER ­ VISIONARY TO A 100-ANNIVERSARY FROM BIRTHDAY Pahomov A.G. PFUM, Moscow It is possible to judge a condition of an astronomical science on literary works of time. ...

. Comment on J1130-1449 . There are two dominant components in our image. Comparison with the 15 GHz image of Kellermann et al. (1998) reveals that the western component is brighter at the higher frequency, indicating that the brighter (eastern) component in our image may have a steep spectrum. VLBApls home page . Last modified: 16 Oct 2000

... Research objects and scientific purposes . Space scientific program includes development and launch of two supersmall spacecrafts "Universitetskiy" and "Kompas-2" intended for monitoring of radiation conditions near the Earth. ... All the studies conducted in the near-Earth space are characterised by strong radiation fields. ... The circular polar orbits, which cover all the near-Earth space, are the most favorable for comprehensive studies of the radiation conditions near the Earth. ...

... SUPER RATIO . ... On this page I will present the most important (on my opinion) idea on Intellegence Life in the Universe . ... On the problem of the Super Ratio in astrophysics" . ... As a matter of fact, this is the main problem of the modern natural science. ... Here I shall try to speak about the most important problem of the modern natural science, the problem which is undoubtedly, of more importance than discovery of Blacks Holes, creation of Grand Unification Theory or Artificial...