Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

... IKI STRUCTURE . ... Dr. Evgeny Lupian , Earth remote sensing projects support . ... Ilya Chulkov , instrument design and development . ... head - Prof. Dr. Nikolai Erokhin Theoretical and numerical approach to study Earth and space multi scale phenomena, such as tornadoes, plasma waves and Earth-ionosphere-magnetosphere interactions. ... Very Long Base Interferometry Integrated Departments Onboard and Special Instruments R head - Ilya Chulkov Complete cycle of instrument development . ...

... Keck spectropolarimetry, giving spectral coverage from Ly- to beyond CIII], and HST imaging of a sample of powerful radio galaxies with has been obtained. ... This is a short progress report on a rather extensive programme we are carrying out to study the structure and composition of high redshift radio galaxies (HzRG) -- and, by implication, the host galaxies of radio quasars -- using observations in the optical, IR and mm bands. ... An example of the NICMOS and WFPC 2 imaging is shown in Figure 2 ...

Orbit . ... The orbit of the RadioAstron provides four types of study: . rough images of radio sources with ultra-high angular resolution, using all baselines up to the radius of the apogee, that is much larger than Earth diameter; . ... high quality imaging of radio sources, with moderate resolution, by observing either with small projected base lines Earth-spacecraft, i.e. close to the orbital plane, or near the perigee. ... high accuracy orbit determination. ... Space Radio Telescope . ...

... FileљStructure . ... After downloading all the catalogues, the paths to the various files should look like this: Installation Data Directory / stars / default / stars _0_0v0_1.cat Installation Data Directory / stars / default / stars _1_0v0_1.cat Installation Data Directory / stars / default / stars _2_0v0_1.cat Installation Data Directory / stars / ... In this case, all the files would be in the <Installation Data Directory>/stars/default directory. ...

LBO LBO has many unique characteristics that contribute to its wide use as a nonlinear optical crystal. ... LBO Specifications Wavefront Distortion Dimension Tolerance Clear Aperture Scattering Sites Flatness Surface Quality Parallelism Perpendicularity Angle Tolerance Damage Threshold /8 at 633nm (W: +/- 0.1mm ) x (H: +/- 0.1mm ) x (L: + 0.2mm/- 0.1mm ) 80% of central area No visible scattering centers when inspected by a 30 mW green laser /8 at ...

... Research of an atmosphere of the Earth and other planets of Solar system by optical methods . ... The long-term experience of study of atmospheres of planets of Solar system in a department of physics of planets has defined directions and methods of researches spent for laboratory . ... The tasks of laboratory are researches by optical methods of structure of a Terrestrial atmosphere, namely study of spectra of absorption of its compound radiation of natural and artificial sources. ...

Physical Properties and Internal Structure of Near-Earth Objects . ... The review contains the most recent data on near-Earth objects such as their sizes and densities, rotation and shapes, taxonomy and mineralogy, optical properties and structure of their surfaces, binary systems among the NEOs and internal structure of asteroids and comets constituted the NEO population. ... The European space mission ISHTAR, NEO 4660 Nereus, NEO 5797 Bivoj. ...

The Earth. ... The middle raiding of the Earth is 6371,032 km, the pole 6356,777 km equatorial - 6378,160 km. The Earth surface area is 510,2 mln km^2, 70,8% of which is the World ocean. ... According to the modern cosmogonical views the Earth was formed 4,6 - 4,7 billions years ago from the protoplanet cloud captured by the Sun. ... The Earth is conditionally divided into 3 parts: a bark a cloak and a core (in the centre). The external layer - the bark is 35 km thick. ... Above the Earth. ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Star Atlas . ... Astronomy for Kids . ... Is there evidence of Oort-Cloud-like structures around other stars? ... We showed that if the solar system is typical, then Oort-Cloud-like structures should commonly exist around other stars. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

... Carefully measure the diameter of the craters formed by the impact without disturbing the sand. ... Crater diameter increases with increasing mass. ... Without disturbing the sand, carefully measure the crater diameter. ... Did you measure any difference in the diameters of the craters? Yes, as velocity increases, so does crater diameter. ... Impact cratering. ... Impact craters can be demonstrated with younger or less advanced students using mud instead of sand and ball bearings. ...

... Primary Mirror after being stripped and recoated in 3-layer protected silver (NiCr-Ag-NiCr) on 12 September 2009. image: CIMG7901.jpg . ... Primary Mirror held by (yellow) handling tool being lifted off transport container (note the tennis balls it rested on), to be put on wash cart during unpacking at VISTA on 29 March 2008. image: P1060207.jpg (taken 29/03/08) . ... VISTA Mirror Blank: Shape of 4m primary mirror blank being tested at Schott Glas in Germany. image: M1_shape_checking-300dpi.jpg . ...

... 2001 - present-day Researcher in Theoretical Department of Astro Space Center of Lebedev Physical Institute ot RAS . ... Department Number . ... Astro Space Center . ... arna@lukash.asc.rssi.ru . ... Arkhipova N.A., Komberg B.V., Lukash V.N., Mikheeva E.V., "Population of Cosmic Voids", Astronomy Reports 51, pp 787-796 (2007) . ... Surdin, V.G., Arkhipova, N.A., "Influence of dissipation and dynamical friction on the number of globular clusters in a galaxy", Astronomy Letters, Vol.24, p.343 (1998) ...

... It is reasonable to expect that UV part of the irradiating spectrum is most influenced by the grain evolution (growth and sedimentation ) which marks the very initial stage of planet formation. 2 log J [erg s­1 cm­2] 1 0 -1 -2 -3 1000 BB 40 0 0 (A5 ) BB 20 0 00 (A5) Drai ne (A5 ) BP Ta u (A5) BB 40 0 0 (GS) BB 20 0 00 (GS) Drai ne (GS) BP Ta u (GS) Disk Model Density distribution is based on a 1+1D disk ... Green lines are used for a model with dust growth and sedimentation. ...

Structure of the supersmall satellites . Scientific equipment . Supersmall satellite "Universitetskiy" is manufactured by Production Corporation "Polyot" (Omsk, Russia) in the interests of Lomonosov Moscow State University. Supersmall satellite "Kompas-2" is a pilot project of multi-satellite system which is intended for prediction and motnitoring of natural and technologenical disasters. ... Composition of the scientific equipment of the "Universitetskiy" satellite. ...

... IAU planet classification Observing with a Telescope Large Scale Structure The observables: Local Group (size 1 Mpc) Virgo cluster (size 2+ Mpc) Virgo supercluster (size ~33 Mpc) Voids (size ~ 10-150 Mpc), Walls and sheets, aka filaments (size ~ 50-80+ Mpc) 1 parsec The nearest star is 1.2 parsecs away (Proxima Centuri). ... Virgo supercluster Voids, Sheets Filaments The Virgo Cluster is a cluster of galaxies at a distance of about 18.0 Mpc away in the constellation Virgo. ...

StarShine-3: . ... The satellites are covered by nearly 1000 small, front-surface aluminum mirrors that are machined by technology students in Utah and polished by tens of thousands of students all over the world. ... And this is only small story about it. ... We will be able to measure the angular position of that satellite by observing sunlight flashes from small mirrors mounted on the surface of the satellite, as it passes across the starry sky before sunrise and after sunset.. ... Starshine 3 . ...

... The words are numbered according to the reference mentioned above. ... 59 WORD wSecond ; // 0 .. 59 satellite tracking start time (GMT) float fStep ; // reserved WORD wMass ; // reserved BYTE reserved [12] ; // reserved WORD wExtraBytes ; // reserved } TRAJECTORYHEADER ; NOTE: the satellite tracking start time is a hardware operating start time to follow satellite. typedef struct { // ephemeris at satellite tracking start time double time ; // Epoch time (yyddd.ddddddddd)...

... Polish scientists at the Space Research Centre, Polish Academy of Sciences, in Wroclaw, south-west Poland, have constructed an instrument called SphinX (short for Solar PHotometer In X-rays), which is an X-ray spectrophotometer, that will obtain spectra in the energy range 0.5--15 keV in 256 energy channels with frequency of up to 100 times a second. ... SphinX is part of a package of instruments known as TESIS (PI Prof. Sergei Kuzin, Lebedev Institute, Moscow). ... Space Research Centre, . ...

... IONOSPHERIC DATA IN THE INTERACTIVE SPIDR SYSTEM . ... The Ionosphere The ionosphere is that part of the upper atmosphere where free electrons occur in sufficient density to have an appreciable influence on the propagation of radio frequency electromagnetic waves. ... These regions may be further divided into several regularly occurring layers, such as F1 or F2. ... E Region: The region between about 95 and 150km above the Earth that marks the height of the regular daytime E layer. ...