... Her X­1 is one the first X­ray binary pulsar discovered by the eminent UHURU satellite in 1972 (Tananbaum et al. 1972, Giacconi et al. 1973) and since then remains one of the most studied accretion­driven X­ray stellar bi­ naries. ... 1972). The amplitude of the reflection effect strongly increases in ultraviolet and according to many optical UBV­photometrical data is \Deltam V = 1:45; \Deltam B = 1:6; \Deltam U = 2:55. ... 1982), HEAO­1 (Gorecki et al. ... 1984, Ohashi et al. ...

... Subject of Astronomy. ... Basis of Spherical and Practical Astronomy. ... Celestial Sphere. ... Changes of Star's Coordinates as a Result of Daily Rotation of Celestial Sphere. ... Time Measuring. ... Changes of Solar Equatorial Coordinates. ... Stellar Day, Stellar Time. ... Real Solar Time. ... Mean Solar Time. ... Connections between Stellar and Mean Time. ... Apparent Path and Configuration of Planets. ... Ways of Energy Transportation to Stellar Surface.Basis of Spectral Analysis. ... Solar...

HST Call for Proposals and HST Primer for Cycle 24 . ... Hubble Space Telescope Primer for Cycle 24 > Chapter 5: Observing Considerations > 5.3 Solar System Targets . ... Solar System Targets . Objects within the Solar System move with respect to the fixed stars. ... This is accomplished by maintaining FGS Fine Lock on guide stars, and driving the FGS star sensors in the appropriate path, thus moving the telescope to track the target. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... We present multi-wavelength observations of the helium-dominated accreting binary KL Dra which has an orbital period of 25 mins. ... Although KL Dra is a weak X-ray source we find no significant evidence that the X-ray flux varies over the course of an outburst cycle. We can reproduce the main features of the 60 day outburst cycle using the Disc Instability Model and a helium-dominated accretion flow. ...

Text of these problems is available also in other languages : . ... What can one see in the Moon's sky more often - the Sun or the Earth? ... There are about of 250 millions of stars in the elliptical galaxy M32 (a satellite of Andromeda galaxy). ... The masses of Capella's components. ... You are proposed to estimate the masses of Capella's components, using our observational data. ... A galaxy's mass. ... Estimate the mass of FGC 1908 and compare it to the mass of our galaxy. ...

... He considers some practical aspects of dependences of the optical properties of cosmic dust analogs on their parameters. ... First results of a systemtic study as well as a detailed comparison of different optical characteristics (cross-sections, phase function, etc.) of some complex shape and structure scatterers and their optical models are presented here and here . ...

Teaching courses . for student of the Department of Astrophysics and Stellar Astronomy . ... Geophysics and physics of the planets (Kurt, Panteleev) . ... Close Binary Stars . ... Solar Physics . ... This is introductory course for students of the third year of education which are familiar with elementary astronomy and general physics. ... The one-year course includes theory of radiation transfer, theory of internal stellar structure with account of binary systems with compact comapnions. ...

RADIO AND OPTICAL OBSERVATIONS OF THE PSR B1259-63/SS 2883 Be STAR BINARY SYSTEM . Simon Johnston (ATNF, CSIRO, and RCfTA, University of Sydney, Australia), . ... Abstract We report here on radio timing observations of the 47-ms pulsar PSR B1259-63 (PSR J1302-6350) and optical observations of its binary companion Be star, SS 2883. ... The system is a likely progenitor of the high-mass X-ray binaries and double-neutron-star systems such as PSR B1913+16. simonj@physics.usyd.edu.au ...

... LABORATORY OF RADIO ASTRONOMICAL OBSERVATIONS . Radio sources identification is one of the most important tasks of the current radio astrophysics. ... Optical idetification. ... Optical identifications of subsample of steep spectra radio sources from RC catalog using 6m SAO telescope of SAO RAS: optical observations. ... Astronomy Reports. ... Identification of radio sources with data of various radio catalogs allows one to construct continual spectrum of the object and its radio structure. ...

... title='Софтбокс Lumifor LS-30120-5GRID Соты' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> . 3 in 1 Practical Mini USB Cool Bottle Humidifier / Aromatherapy Machine / LED Nightlight for Car Office Home . ... Occasion: Home, Dining Room, Living Room, Others, Office, Outdoor, KTV, Kitchen Room, Car, Bar, Bathroom, School, Bedroom . ... Home Appliances . ... Package contents: 1 x Cool Bottle Humidifier, 1 x USB Cable . ...

NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Astronomy . ... Visitor Center . ... Optical . Lidar . At Arecibo we have a variety of optical instruments that we use to study terrestrial airglow emissions. ... This equipment is located in our Optical Laboratory, which is on site about 1000 feet from the center of the incoherent scatter radar. ... The various observational modes that are available are described in supplementary documentation for the Arecibo Observatory Optical Laboratories. ...

... Events . ... Events XI International Forum 'Optical Systems and Technologies - OPTICS- EXPO 2015' . ... Scientific and practical conference 'Optics in Science and Technology'; . Specialized scientific and practical conference 'Innovative optical technologies for the manufacture of electro-optical devices and complexes'; . VI Topical scientific and practical conference 'Research and development in the field of advanced electro-optical and laser systems and technologies for aircraft'; . ...

... XRB SEDs | ... This site provides spectral energy distributions (SEDs) of X-ray binaries from optical to X-ray energy range as a function of binary type (BH, NS, HMXB, LMXB), orbital phase, superorbital phase, and aperiodic X-ray spectral states. ... X-ray binaries (XRBs) owe their prominence to one of the most efficient energy release mechanisms known: accretion onto a compact object. ... What are X-ray Binaries? A brief definition of X-ray Binaries . ... Comparing SEDs by binary type . ...

... Science . ... Science Users Information > Science Publications > Science Announcements . 10 Apr 2016 jump to navigation jump to content . ... Observing with ESO Telescopes . ... Phase 1 Proposals . ... Phase 3 . ... Data Handling and Products . ... Science Data Products Forum . ... ESO Data . ... Science Announcements . ... Published: 18 Jan 2016 . ... The submission deadline for Phase 2 Service Mode observations is 4 February 2016 ; see separate announcement . ... Published: 17 Dec 2015 . ...

... In the very first iteration, the user is required to input the true coordinates of at least two sources interactively. For this Ds9 is launched showing an image that has been accumulated from the input event list with all found sources marked through excluded circles . For each source that is to be used as a reference source the user needs to: . ... There is an alternative reference source input method available that is activated with the withrefsrclist parameter. ...

Общая Астрономическая Конференция > Товары для астрономов > Полезное для астрономии . The Urban Astronomer's Guide (Patrick Moore's Practical Astronomy Series) . ... Астрономический Online журнал . ... Лунные феномены (редкие, необычные явления) Жизнь астрономов-любителей Анонсы астрономических мероприятий Астрономические клубы Наш "Старлаб" . ... Astronomy with a home Computer (Patrick Moore's Practical Astronomy Series) . ...

The AstroGuide . ... AstroGuide | ... Other Sites . ... AstroGuide Listing . Login . See many more Astronomy Listings by: Category or Alphabet . ... Listed Since December 26, 1998 . ... Web Site . ... However, you must Login to submit a comment. ... Web . www.astronomy.net . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

THE RELATIVE MONTHLY MEAN SUNSPOT NUMBER ON JULY 2015 HAS MADE Wjuly = 66.4, THAT GIVES FOR 72 MONTHS ( 2015 , January DEVELOPMENT CURRENT 24 CYCLES OF SOLAR ACTIVITY THE SMOOTHED MONTHLY MEAN SUNSPOT NUMBER W*dec. = 56.0 (old system ); 93.3 - new system W*jan. = 63.9 c (89.8 - http://www.sidc.be/silso/newdataset) - On July 1, 2015 Centre in Brussels moved to a new system of cal- culation the relative ... Preliminary table of reliable solar cycles in new system look down. ...

... Over the first 4 years, its X-ray telescopes eROSITA and ART-XC will survey the whole sky with a record sensitivity in the 0.5-10 keV energy band. ... The goal of the second international Spectrum-RG conference is to discuss the different scientific topics addressed by the mission, synergies with surveys at other wavelengths, and requirements to follow-up observations.Contributed talks and poster presentations are invited on the topics related to the SRG science goals. ... Active galactic nuclei . ...

... Space flight . Crew training . ... honing the skills of performing the tasks of operating the orbital (suborbital) spaceship in a normal autonomous flight and in case of occurrence of off-optimum situations; . ... preparing for conducting visual observations, photographing and video filming envisaged by the flight program; . ... preparing the astronaut's body to the effect of space flight factors, honing the skills of operating the spaceborne medical facilities, rendering self and mutual aid; . ...