... X-rays are made up of photons that are emitted from stars, or quasars, or supernovae, the sun, or simply: anything that is undergoing a change either in size or temperature or giving out heat. ... in an X-ray binary star system, in which one normal star's orbit is crossed by a neutron star, when the neutron star by means of gravitational pull takes matter from the normal star X-rays form. ... Artists conception of a normal star (HDE 226868) and a black hole taking matter from the normal star. ...

... Like the night sky on the Earth, the martian sky hosts a plethora of astronomical phenomena occurring around the clock in a neverending space opera played out for the benefit of robotic and future human observers alike. ... Moons . Mars has two moons, Phobos and Deimos . ... Under the same conditions, Deimos would be as bright as -5, somewhat brighter than the planet Venus appears in Earth's sky. ... The moons are also eclipsed by Mars itself (a situation analogous to lunar eclipses at the Earth). ...

... Contacting and discussing with people sharing your interests, participating in night sky observations with telescopes as well as a large choice of astronomical books, magazines and video-tapes out of our club library. ... The seasons, the seeing ( a clear sky is not always associated to calm , stable air ) and most important how dark your observation site is. ... Therefore a dark site for observing is at least as important for deep sky observation as the diameter of your scope. ...

... Click here to go directly to the Orion Nebula Images. ... Copies of individual figures from this paper are available from John Bally . ... Figure 1: The core of the Trapezium showing the four energetic massive stars and a plethora of Sun-like stars with surrounding extended emission. ... Click to download figure in jpeg format. Click to download figure in tiff format. ... Figure 3: A gallery of star-disk systems in Orion's Trapezium. ... To Doug Johnstone's Scientific Home Page . ...

. [ Go back to Comet WWW site ] . Andrew A. Martis . martis @ sai.msu.ru .

... Seminar archive . ... Новиков И. Д. ( АКЦ ФИАН ) . ... 30 min. ... Дорошкевич А. Г. ( АКЦ ФИАН ) . ... Лукаш В. Н. ( АКЦ ФИАН ) . ... Комберг Б. В. ( АКЦ ФИАН ) . ... Курт В. Г. ( АКЦ ФИАН ) . ... Новиков И. Д. Download presentation . Черепащук А. М. Download presentation . Дорошкевич А. Г. Download presentation . Гнедин Ю. Н. Download presentation . Бисноватый-коган Г. С. Download presentation . Лукаш В. Н. Download presentation . Сажин М. В. Download presentation . ...

. " The Arecibo Observatory is sponsored by the National Science Foundation. Any opinions, findings and conclusions or recommendations . expressed in this publication are those of the author(s) and do not necessarily reflect the views of the National Science Foundation."

. Материалы XIV Нижне-архызской осенней астрономической школы в САО РАН . Лектор: Сергей Николаевич Фабрика . Презентации: . Жизнь звезд . Обсерватории и телескопы . Расписание школы здесь .

... Media Files . ... There are media files (ppt, pdf of presentations shared by authors) on this page. ... Alexander Gusev (SAI), Boris Artamonov (SAI) . ... Maidanak Observatory by AZT-22 1.5m telescope observations (poster) . PDF [2.3€аMB] . ... PDF [692.6€аKB] . ... PDF [704.7€аKB] . ... Some results after 10 years of site testing at Concordia . ... Giant Magellan telescope site testing summary (poster) . ... Peter Scheglov - pioneer of site testing in the Central Asia (poster) . ...

... Professor of the Moscow University, . Soros professor . New project: MASTER - Mobile Astronomical Systems of the TElescope-Robots. ... Drawing Books Scientific arts Colleagues Teaching . The Best City Vita Painters Fiction New Drawing . Recent popular papers . ... Recent review: . 1.P OPULATION SYNTHESIS OF HIGH ENERGY TRANZIENTS: . FORMATION AND MERGING OF RELATIVISTIC BINARIES( Roma, 1997) . ... lipunov@sai.msu.ru . Send! Send to galja rar . ...

... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

... StarCalc Home Page - Downloads . ... File . StarCalc (English version) . ... With minimal configuration, version 5.72 of StarCalc includes the next interfaces: "Horizon", "Horizontal coordinategrid", "Equatorial coordinate grid", "Constellation boundaries", "Constellation lines", "Constellation names", "Star proper names", "Bright Star Catalog", "Deep-sky objects", "Sun", "Moon" and "Planets and satellites" . Plugins for StarCalc . ... Interface to NGC 2000 (plugin + catalog file) . ...

... A star was observed at different zenith distances during one night at the Engelgardt's Astronomical Observatory in the program of atmospheric extinction study at blue. ... The determination of the star's brightness was performed with the method of photon counting. ... Variable star. ... The brightness of the variable star was measured occasionally during the other nights, and moments of maximal values of brightness (15.59m) were received on nights 2­5, the 2nd table. ... JD 2452805. ...

... Фаза луны = 9% . ... Солнечная система . ... Луна . Марс . ... Сравнение планет . ... Карты поверхности планет . ... Об астрономии . ... Галактики . ... Космос . ... Новости космоса . ... События в астрономии . ... Нужны ли Вам книги по астрономии . ... Фото космоса . ... Библиотека . ... Луна ON-LINE . ... Космос видео . ... Хронология астрономии . ... Периодическая система . ... Частушки о космосе . ... Фото дня . ... Символы планет . ...