... V.V. Busarev, Sternberg State Astronomical Institute, Moscow University, . ... V. V. Busarev1, M. N. Taran2, V. I. Fel’dman3 and V. S. Rusakov41 Lunar and Planetary Department, Sternberg State Astronomical Institute, Moscow State University, 119992 Moscow, Universitetskij pr., ... 1 Sternberg State Astronomical Institute, Moscow University, Universitetskij pr., ... V. V. BUSAREV, Sternberg State Astronomical Institute, Moscow University, Russian Federation (RF) (E-mail: busarev@sai.msu.ru); . ...

... This course is an introduction to the theory of braid groups associated to finite reflections groups. ... To each finite reflection group, one may associate a braid group; the intuitive braid group on $n$ strings is a particular example, associated with the symmetric group. ... Brieskorn's theorem about presentations of braid groups; . ... cohomology of braid groups; . ... The course will be essentially self-contained, the only prerequisites being basic group theory and basic algebraic topology. ...

Pulkovo Photographic Plate Database . To find a certain plate, type its number, choose instrument and click button FIND Instrument: Normal Astrograph 26-inch refractor Plate number: . To find plates with a certain sky area: choose instrument, type coordinates (R.A. and Dec.) of the center of this area, type radius of this area, type (optionally) names of required objects, and click button FIND . ...

. SOME OF WELL-KNOWN DEEP SKY OBJECTS: . All images taken with 150/695mm homemade Newton reflector + SBIG ST6 CCD camera (falsecolors) . The treasures of Orion - some special images . Some galaxies on the Lion's mane . Messier 98, 99, 100 - three fine galaxies in Coma . NGC 6946 and NGC 6939 - nice galaxy and fine star cluster in one field of view. HOME (Eng) | HOME (Rus)

... SF-SERIES . ... LUMAM . ... Home Products Microscopes Lumam LUMAM objective series . LUMAM OBJECTIVE SERIES . The LUMAM objective series features infinity-corrected Plan Fluorite (PF) and Plan Achromat objectives all specially designed for phase contrast and/or fluorescence microscopy. They are: 10x 0.50 PF, 10x 0.40 PF Phase, 20x 0.45, 20x 0.70 PF, 40x 0.65, 40x 0.65 NCG, 40x 0.65 NCG Phase, 40x 0.75 NCG water, 40x 0.85 PF, 40x 0.85 PF Phase, 100x 1.25 water and 100x 1.30 PF oil/iris. ...

... Плоское облако Хиллса (Hills Objects). ... Облако Оорта (Oort cloud). В 1950 году Ян Хендрик Оорт (Jan Hendrik Oort) (1900-1992) [1,2] предположил существование массивного облака объектов, имеющего форму, близкую к сферической, возможного источника долгопериодических и гиперболических комет (в последний раз предположение исследовано Талкотом в 1999 году) в области от 10000 до 150 000 а.е. от Солнца (по ряду оценок, может простираться до одного светового года от центра системы). ... Облако Оорта. ...

... Home Articles Observing Resources for Amateur Astronomers ? Part 1: Beginning Observers Observing Resources for Amateur Astronomers ? Part 3: Advanced Observers . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . Observing Resources for Amateur Astronomers - Part 2: Intermediate Observers . Observing Resources for Amateur Astronomers - Part 3: Advanced Observers . Observing Resources for Amateur Astronomers - Part 4: Magazines and Miscellany . ...

... On-line Data . ... The program enables to find out the exact present Earth coordinates of the international space station and "Shuttle". ... J-Track - this program is similar to the previous one, however it knows how to display images and orbits of space vehicles. ... NASA SkyWatch - a program for those, who are fond of watching artificial space objects through the telescope, field - glass or with the unaided eye. ... Info: Industry news On-line Data Company ATLAS news Events We in press Contact . ...

... Астрософт (Модератор: tlgleonid ) > . Celestia или как там ее . ... Right drag: orbit the selected object . ... Ctrl + Left drag: adjust distance to selection . Shift + Left drag: change field of view (e.g. => telescopic view) . Wheel (middle button) click: toggle field of view between 45 degrees . ... Chase selected object (orientation is based on selection's velocity) . T : Track selected object (keep selected object centered in view) . ... Ctrl+P : Mark selected object . ...

... Bad Astronomy . ... Bitesize Astronomy . ... If you thought our tour of the solar system ended with Neptune and Pluto, you are setting your sights way too low. The planets of the solar system mark time relatively close to the Sun compared to interstellar space. Pluto orbits the Sun at an average distance 40 times that of the Earth, yet the nearest star (the Alpha Centauri system) to the solar system is a mind-numbing 260,000 times the distance of the Earth to the Sun. ... 2008 Phil Plait. ...

... Latest Supernovae . ... Sorted by Name For the years covered, 7501 supernovae and 114 extragalactic novae were reported. 376 of these supernovae were named by CBAT, 1714 were given possible supernova designations, and 5411 were not reported to CBAT. 219 supernovae were found in NGC/IC galaxies, 874 were found in named galaxies 341 objects were discovered by amateurs 4 were brighter than 13th Magnitude 208 were brighter than 16th Magnitude 1079 were brighter than 18th Magnitude 1349 ...

NAME apxs - APache eXtenSion tool SYNOPSIS apxs - g [ - S variable = value ] - n name apxs - q [ - S variable = value ] query ... apxs - c [ - S variable = value ] [ - o dsofile ] [ - I incdir ] [ - D variable [= value ] ] [ - L libdir ] [ - l libname ] [ - Wc, compiler - flags ] [ - Wl, linker - flags ] files ... apxs - i [ - S variable = value ] [ - n name ] [ - a ] [ - A ] dso- file ... apxs - e [ - S variable = value ] [ - n name ] [ - a ] [ - A ] dso- file .. ...

... Prague , 2006 . ... The draft classification (version August 9, 2006 ) for new GCVS versions . Along with the "+" sign (coexistence of two types), it is suggested to introduce the "|" sign (meaning "or") - for classification options for the same object, e.g. EC|Ell, EC|RR. Pulsating variables . ... DCEP , DCEPS , CEP ( B ) DCep , DCep 0, DCep 1, DCepB 01, DCepB 12 . ... Eruptive variables . ... PN, WD, WR Remove from the classification, indicate through the spectral type or Remarks . ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . Brief History of Rocket and Space Technology . ... Flights Chronology . ... Project History . ISS Russian Segment . Steps of ISS Assembly . Spaceflights Chronology . Chronology of Extravehicular Activity . ISS 45/46 . ... Rocket Space Complexes . ... Launches Chronology . ... Automatic Space Systems . ... HISTORY . ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

... The first column shows the kinematical diagrams, where is the angle between the line of sight on the object and the vector of rotation about Z -axis, and V S is objects line-of-sight velocity relative to an observer at rest at the position of the Sun. The straight lines are regression fits, whose slopes yield the subsystem’s rotation rate. The second column shows the relations between metallicity and distance from the Galactic plane. ... privious figure | next figure . ...

... Telescopes . ... But regardless of where you observe from or whether or not you have a telescope, exploring the many aspects of astronomy can be an exciting hobby. It can be an activity shared with thousands of other amateurs all over the world. ... Or it might be pursued more actively by joining a local astronomy club like the Amateur Telescope Makers of Boston and learning by direct association with other amateurs. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...