... 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...

Crater Gassendi . ... I made this drawing was made on the 26th of november 2001. If you compare this one with the previous drawing of Gassendi (below) the differences are clear. ... This drawing was made on the 28th of september 2001. After nearly a full month without observations I had a one hour gap between the thicker clouds. ... This drawing was made on the 29th of august 2001. ... This drawing was made on the 27th of august 2001. ... This drawing was made on the 25th of august 2001. ...

. Departement of Quantum Astrophysics . Head: Kurt V.G. , Prof. ultraviolet spectroscopy of planetary upper atmospheres and interplanetary/interstellar medium; . observations of gamma-bursts and optical identification of their sources; . long-base optical interferometry. Staff: .

... Full silvery Moon illuminates terrain. ... Begun a next moon eclipse, when Land barriers a Moon from the Sun and throws its shade on it. ... Drawing 1. ... Drawing 6 Drawing 6 shows a splendid photo of full moon eclipse 18-19 november 1975 during is packed phases doing Dennis de Chikko. ... Eclipse, which will occur 9 november 2003, is a repetition through сарос (cycle of repetitions of eclipses equal 6585 days or 18 years 11 days) full moon eclipse from 28 octobers 1985 with the maximum phase 1,07....

. 1.29. It's a railroad terminal created in the period of British occupation. 1.30. 1.32. This is a place when people celebrate weddings. 7.15. People sell things in the street. 7.19. 7.21. We are going to taste Hindu ice-cream. Does anybody remember, what the name of Hindu ice-cream is? . 7.22. 7.24. 7.27. 7.28. Return to the main page .

... Facts of the Tunguska paradox . Hypotheses about the nature of the Tunguska explosion . Bibliography . ... Puzzles of the Tunguska event . Tunguska sketches . ... Review of studies of the Tunguska phenomenon . ... Vasilyev . ... Map and photos of the Tunguska site . Detailed maps of the epicenter of explosion . ... Photos . ... The expedition "Tunguska 2004" . ... The expedition "Tunguska 2001" . The expedition "Tunguska 2000" . ... The expedition "Tunguska 2002" . ...

... The source exhibits a mas-scale structure which, according to the USNO multi-epoch monitoring at 2.3 and 8.4 GHz over the period from 1994 July through 1998 April, undergoes considerable changes in the brightness distribution and positions of the major structural features. Our image is qualitatively consistent with the structural pattern of the source. ... We note a difference of ~90 in position angles of secondary components in our image and the 5 GHz VLBI image by Shen et al. 1998). ...

... 110, A09S07, doi:10.1029/2004JA010931, 2005 CORONAS-F/SPIRIT EUV observations of October ­ November 2003 solar eruptive events in combination with SOHO/EIT data V. V. Grechnev,1 I. M. Chertok,2 V. A. Slemzin,3 S. V. Kuzin,3 A. P. Ignat'ev,3 A. A. Pertsov,3 I. A. Zhitnik,3 J.-P. Delaboudinie e,4 and F. Auche e4 `r `r Received 30 November 2004; revised 2 March 2005; accepted 8 April 2005; published 28 July 2005. ... Events of the First Rotation 3.1. ... SPIRIT AND EIT OBSERVATIONS A09S07 Figure 1. ...

... Advises . Contact Advises . As an advise for amateurs we would like to underline: if it's possible, try to observe 3 asteroid positions per night and do not neglect to observe the Numbered Minor Planets in your telescope field of view as a "by product" of your observational programs. ... We think such estimations ought to be produced every morning after CCD observations of the moving celestial objects by observer himself. ...

... Space flight . ... The L-39 two-seat training jet plane is intended for flights in regular and complex meteorological conditions at day and night time, as well as for acrobatic flying. ... A cockpit canopy is pressure-tight with a single layer glazing, the back-folding parts can be thrown off under abnormal condition by pyrotechnical systems. ... Comparable on size and assigned tasks with the American F-16 and F/A-18 fighters, the MIG - 29 is presently in the service of 23 countries of the world. ...

... In accordance with assignment she was sent to Nikolaev branch of the Pulkovo observatory. At the Nikolaev Observatory Eugene Khrutskaya worked with the meridian circle, she made a lot for automatization of observational process, and in 1973 she created the catalog of right ascensions obtained for more than 6000 stars, and she defended her thesis. ... From 2004 to the present, Evgenia Khrutskaya was Head of the Laboratory of astrometry and stellar astronomy. ... Pulkovo observatory . ...

... Soc. 376, 1033­1046 (2007) doi:10.1111/j.1365-2966.2007.11549.x Kinematics and stellar populations of the dwarf elliptical galaxy IC 3653 I. V. Chilingarian,1 1 2 ,2,3 P. Prugniel, 2,4 O. K. Sil'chenko1 and V. L. Afanasiev 5 Sternberg Astronomical Institute of the Moscow State University, Universitetsky pr. ... Fitting the spectra with synthetic single stellar populations (SSP), we found an SSPequivalent age of 5 Gyr and nearly solar metallicity [Fe/H] =-0.06 dex. ... 2007 The Authors. ...

... It is created for freeware distribution as an attempt to show the achievements of the Russian space industry and tell a story of the reusable orbital ship "Buran" . On your screen you will see a stunningly realistic picture of near-Earth space, as well as several spacecraft, created or envisaged by the really talented Russians: . ... demonstration mock-up of the military orbital laser station "Polyus" ("Pole") , which suffered a failure during its launch on May 15, 1987; . ... Texture . ...

THE 7-TH G. GAMOW'S ODESSA ASTRONOMICAL SUMMER SCHOOL «Astronomy and beyond: Astrophysics, Radioastronomy, Cosmology and Astrobiology» (Ukraine, Odessa, Chernomorka,7-12 August, 2007) SCIENTIFIC PROGRAM Tuesday, August 7 ­ 5.11, ­ 5.45, ­ 20.20 , ­ 20.55 THE DAY OF ARRIVAL 8.00-22.00. ... OPENING SUMMER SCHOOL MEMORIAL: Lection 1 10.00-10.20. ... LUNCH AND SEA COAST WALK AFTERNOON LECTURE: Cosmology: Lection 6 15.00-15.45. ... HOT COFFEE AND COLD WATER BREAK AFTERNOON SESSION: Cosmology: 17.00-17.20. ...

Personal Pages of Astronomers . ... home | ... Jarle Aasland (Comet Hale-Bopp: Norwegian Images) . ... Howard C. Anderson (Astrophotography Images and Information) . ... Patrick J. Anway (Lookum Observatory) . ... Peter Armstrong (ScanCam Home Page) . ... Bill Arnett's Astronomy Page . ... Astro Nights home page ( Australia ) . ... Alex Michael Bonnici (Space Exploration) . ... Michael Boschat . ... Brendan's Astronomy Page ( Republic of Ireland ) . ... Steve's Astronomy and Astrophotography page . ...

... an error occurred while processing this directive] . Satellite passes used for composition: . ... an error occurred while processing this directive] [an error occurred while processing this directive] . For information send a mail to: info@sputnik.infospace.ru . ...

University Satellites and . Space Science Education . ... Abstract Submission List of submitted abstracts . ... Night atmosphere UV radiation as measured by the UV detector on board the "Unversitetsky-Tatiana" satellite . ... Results of measurements of the night atmosphere UV radiation (wavelengths 300-400 nm) by the UV detector on board the "Universitetsky-Tatiana" satellite are presented. ... Skobeltsyn Institute of Nuclear Physics, Moscow State University, 2005-2006 . ...

... Электронная музыка ] [ Зодиакальные мифы ] [ Полезные ссылки ] [ Викторина ] . ... According to myth, Taurus represents the bull-form taken on by Jupiter when he became enamored of Europa, princess of Phoenicia: . ... Согласно легенде, Телец - это бык, в которого превратился Юпитер (Зевс), очарованный красотой Европы, принцессы и дочери финикийского царя Агенора. ... Близнецы - это зодиакальное созвездие, изображающее двух братьев-близнецов, Кастора и Поллукса. ...

gamma Cephei A . HD 222404 . ... Расстояние от Солнца . ... Масса ( солнечных масс ) . ... масс Юпитера . ... Расстояние в перицентре - 1.95 а.е. Расстояние в апоцентре - 2.15 а.е. Радиус эффективной земной орбиты (показана зеленым цветом) - 3.38 а.е. На расстоянии 1.467 угловых секунд (20 а.е. в проекции на небесную сферу) расположен звездный компаньон. По данным астрометрии наклонение орбиты гамма Цефея b составляет 5.7 +15.1/-1.9 градусов, а истинная масса объекта - 5-27 масс Юпитера ...

... Ф. В. Петров планирует провести 4 занятия. ... Дан планарный граф (возможно, с кратными ребрами), степень каждой его вершины равна $r$. ... Для натуральных $\alpha,\beta,\gamma$ имеет место равенство $$ {\int}_0^1\dots{\int}_0^1 \prod_{i=1}^nt_i^{\alpha}(1-t_i)^{\beta} \prod_{1\leqslant i<j\leqslant n}|t_i-t_j|^{2\gamma} dt_1\dots dt_n =\prod_{j=0}^{n-1}\frac{(\alpha+j\gamma)!(\beta+j\gamma)! ((j+1)\gamma)!}{(1+\alpha+\beta+(n+j-1)\gamma)!\gamma!} ...