We present the results of our observations of the white-light corona in polarized light performed at Criciuma eclipse, Brazil. During the observation of 3.11.94 we have made five couple of pictures of the solar corona in polarization light. ... Koutchmy S., Molodensky M., Starkova L., Ershov A., Matsuura O .: ... Molodensky M., Starkova L., Koutchmy S., Ershov A .: ... Koutchmy S., Molodensky M.M., Starkova L.I . ... Koutchmy S., Molodensky M.M., Starkova L.I. Koutvitsky V. and Ershov A . ...

Еще в разделе: (Показать все результаты (>569) - www.izmiran.rssi.ru/ )

• Heliophysical Laboratory of IZMIRAN (Solar-Terrestrial Physics Division)

The examples of the errors. ... Observations with ordinary values of the "Mean error of single observation" Obj Code DT RA (O-C) DEC (O-C) mag z h m s " ° ' " " ° 3907 761 1998 08 24.383673 3 17 44.739 0.28 +30 46 00.84 -0.08 15.8 18 3907 761 1998 08 24.409133 3 17 46.152 0.28 +30 46 10.85 0.12 15.8 11 3907 761 1998 08 25.392523 3 18 40.107 0.33 +30 52 27.69 0.04 15.4 15 Total mean value of 3 observations 0.297±0.017 0.027±0.058 Mean error of single observation 0.029 0.101 COMMENT. ...

Еще в разделе: (Показать все результаты (>343) - www.gao.spb.ru/ )

• Pulkovo NEO Page: Ephemeris Support
• Pulkovo NEO Page: Estimation of Accuracy of the Observations

The beam pattern and the polarization characteristics . of the radio telescope RATAN-600 . The Mueller matrix elements was computed via formulas [1]: . ... The BP were computed by the aperture method, proceeding from the fild distribution in the aperture of the primary mirror. The components of the main and cross-polarization components of the electric field in the vertical aperture of the primary mirror was computed in Frenel diffraction approximation. ...

Еще в разделе: (Показать все результаты (>914) - jet.sao.ru/ )

• shmidt_e
• Optimization of spectroscopic observations
• Line-of-sight velocity field of NGC 157.

... Visible Distribution of Galaxies. ... Features of Elliptical, Lens-Shaped, Spiral and Irregular Galaxies. Galaxies with Bar. ... Distribution of Surface Brightness of Surface and Spiral Galaxies. ... Color Characteristics of Galaxies. ... Methods of Galaxies' Mass Determination. ... Hidden Mass of Spiral Galaxies. ... Features of Dark Matter Distribution in E and SO Galaxies. ... The Whole Number of Galaxies and Their Density by the Results of Observation on the 'Hubble' Space Telescope. ...

Еще в разделе: (Показать все результаты (>153) - space.univ.kiev.ua/ )

• Observatory Lisnyky
• A computer controlled low light photometer for nightglow observations
• Researches of Astronomy and Space Physics Department

... Searching for Far Out and Wandering Worlds . ... The Real Reality Show: Would aliens be anything like us? ... The SETI Institute is after alien signals. Assuming another world is beaming a 1-million-watt radio signal in our direction, how far away can that source be before the signal is lost in intergalactic noise? ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ...

Еще в разделе: (Показать все результаты (>6029) - www.astronomy.com/ )

• ALMA disentangles complex birth of giant stars | Astronomy.com
• First direct distance to Andromeda | Astronomy.com

N. A. Vavilov Department of Mathematics and Mechanics, State University of Saint-Petersburg St. Petersburg, Russia nikolai-vavilov@yandex.ru Calculations in exceptional groups Let be a reduced irreducible root system, R be a commutative ring with 1. ... The Steinberg group St(, R). ... 2] R. Hazrat, N. Vavilov, K1 of Cheval ley groups are nilpotent, J. Pure Appl. ... 6] N. Vavilov, An A3 -proof of structure theorems for Cheval ley groups of types E6 and E7 , Int. J. Algebra Comput. 17 (2007), no. ...

Еще в разделе: (Показать все результаты (>450) - www.mccme.ru/ )

• http://www.mccme.ru/tg2007/talks/Raghunathan.pdf
• http://www.mccme.ru/tg2007/talks/Suprunenko.pdf
• http://www.mccme.ru/~smirnoff/papers/oberwolfach11.pdf

Next: Polarization efficiency: size/shape/orientation effects Up: Optical properties of cosmic Previous: The 2175? feature . To model the interstellar polarization one needs to calculate the forward-transmitted radiation for an ensemble of non-spherical aligned dust grains. ... Let non-polarized stellar radiation passes through a dusty cloud with a homogeneous magnetic field. ... The angle between the line of sight and the magnetic field is ( ). ... where the angle is connected with and ( ). ...

Еще в разделе: (Показать все результаты (>290) - www.astro.spbu.ru/ )

• Wavelength dependence
• Generalizations of the RDG approximation
• A Nature of Polar-Ring Candidate Galaxy ZGC 2315+03

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

Еще в разделе: (Показать все результаты (>17) - www.vista.ac.uk/ )

• VISTA ETC - Exposure Time Calculator

... The extinction in terrestrial atmosphere. ... 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. ... Calculate the air mass for given zenith distances in 1st 54.9 11800 column, and write the result into the 2nd column. ... Spectral observations. ... Calculate the radial velocity Vr of the star on each date, the results of measurements and write calculations into the table. ...

Еще в разделе: (Показать все результаты (>839) - www.issp.ac.ru/ )

• http://www.issp.ac.ru/iao/apao/2015/booklet/b02_ap15_t_en_a.pdf
• Comet Observation Home Page (Chernogolovka)
• IV International Astronomy Olympiad, Problems to solve

PENTICTON SOLAR RADIO FLUX VALUES (from SGD Explanation of Data Reports) Daily Solar Flux Values - Penticton -- Daily measurements of the integrated emission from the solar disc at 2800MHz (10.7cm wavelength) have been made by the National Research Council of Canada since 1947. ... The data are tabulated in two forms: the "observed flux" (S), and the "adjusted flux" (Sa). ... The "observed flux" values are useful in ionospheric physics and other terrestrial consequences of solar activity. ...

Еще в разделе: (Показать все результаты (>127) - www.wdcb.ru/ )

... They are concerned with Attitude Control System of the spacecraft, satellite visibility from tracking stations, limits on the satellite autonomous operations during the orbit, and needs for auxiliary operations with the spacecraft. ... Among the operational constraints the most important one is the number of programmed slews per orbit, which determines the maximum number of radio sources to be observed during one orbit. ... System temperature (K) . ... Progress of the RadioAstron Project in Pictures...

Еще в разделе: (Показать все результаты (>175) - www.asc.rssi.ru/ )

• DPC Post-Observations Products
• Ground Radio Telescope (GRT) Products
• RSOG Pre-Observation Products

Peremennye Zvezdy", . ... Star Name: . GSC 3710-00312, USNO-A2.0 1425-04252279 . ... Variability type: . ... USNO-A2.0 1425-04252279 is located at the distance of 15?.7 from the X-ray source 1RXS J031707.9+572942, which is larger than the position error of the source (12?), but its hardness ratio HR1 = 0.03 0.29, typical of chromospherically active stars, and its character of variability allow us to assume that the star is related to the X-ray source. ... Eclipsing variability . Sine wave 1 . ...

Еще в разделе: (Показать все результаты (>48707) - www.astronet.ru/ )

• XWare > APOD

The ESA/ESO Astronomy Exercise Series 2 . The Distance to Messier 100 as Determined by Cepheid Variable Stars . ... The small variations in distance to the individual Cepheid variable stars in the Cloud are negligible compared with the much larger distance to the SMC. ... In this way Cepheid variable stars can be used as one of the 'standard candles' in the Universe that act either as distance indicators themselves or can be used to calibrate (or set the zero point for) other distance indicators. ...

Еще в разделе: (Показать все результаты (>757) - www.astrosociety.org/ )

• ASP: An Ancient Universe - The Age of the Expanding Universe
• ASP: The Goddess of Love & the Hand of God: American Observations of the 1769
• ASP: A Good Definition of the Word "Planet": Mission Impossible?

... Editor's choices for the most educational Astronomy Pictures of the Day about neutron stars: . ... Observations by the Hubble Space Telescope have been combined with previous observations by the X-ray ROSAT observatory and ultraviolet EUVE observatory for the isolated star at the location of the arrow. ... APOD: 1998 April 25 - Supernova Remnant and Neutron Star . ... These X-ray images from the orbiting ROSAT observatory may offer a premier view of such a recently formed neutron stars' X-ray glow ....

Еще в разделе: (Показать все результаты (>2161) - www.sai.msu.su/ )

• Europa
• Kuiper-Oort
• Uranus' New Moons

... Courtesy of NASA/ESA Observation data (J2000 epoch) Constellation Right ascension Declination Redshift Distance Type Serpens Caput 15h 17m 14.4s[] +21° 35 08[] 12,740±50 km/s[][1] 600±30 Mly (183±8 Mpc)[1] SA0(r) [citation needed ] [a] Apparent dimensions (V) 0.28 в 0.28[] Apparent magnitude (V) 16.0[] Notable features Ring galaxy Other designations PGC 54559,[] PRC D-51[] See also: Galaxy, List of galaxies Hoag's Object is a non-typical galaxy of the type known as a ring galaxy. ...

Еще в разделе: (Показать все результаты (>288) - www.astro.louisville.edu/ )

• http://www.astro.louisville.edu/shared_skies/archive/select/ic/ic348/20121109/ic348_wikipedia_20130415.pdf

Blueshifted galaxies in the Virgo cluster I. D. Karachentsev, O. G. Nasonova (Kashibadze), Special Astrophysical Observatory, Russia We consider a sample of 65 galaxies with negative radial velocities with respect to the Lo cal group in the Virgo cluster. ... E, S0 20 ° The radial velo city VLG ­ magnitude mB distribution of sample ob jects. ... The centroid drift for galaxies ranged by VLG from zero to the extremal negative velo city (-866 km/s). ...

Еще в разделе: (Показать все результаты (>303) - mavr.sao.ru/ )

• Hardware sector, archive 2007
• RCJ0311+0507
• Catalog of the LV Galaxies

To main of Laboratory . The research work and design of optical and optical-electronic devices are carries out by laboratory staff: . ... Lens: . ... In the layout 1 prism systems perform functions of dispersive element, corrector of aberrations, optical reducer. ... Spectral range 200 - 400 nm; . ... Back Forward . ... The main corrector's function are compensation of field aberrations of the main spherical mirror of a telescope (diameter of 600 mm, f'=1200 mm) and increase aperture ratio. ...

Еще в разделе: (Показать все результаты (>294) - www.mao.kiev.ua/ )

• Observations - Page 2
• MAO NASU :: Topic: The third-order space-by-time relation (1/1)

... Time calculated from Fermi GBM Trigger Time = 14:12:08.67 ( Connaughton, GCN 9230 ). 1% coincident with our start zero image time. 3x3 degrees around Swift XRT position . ... SUBJECT: GRB 090424 : MASTER-Net prompt optical limit DATE: 09/04/25 20:29:42 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski ... Our observations results: ---------------------------------------------------------------------- Fermi GRB Trigg.* ...

Еще в разделе: (Показать все результаты (>241) - observ.pereplet.ru/ )

• MASTER GLOBAL ROBOTIC TELESCOPES NET
• Обсерватория

Term mixture regarding solar chemical composition refers to relative abundances of heavy elements. Abundances of hydrogen and helium cannot be determined reliably from observations, therefore concentration of these elements are not taken from observational data. ... Table contains only elements which are abundant enough to be included into opacity and equation of state computations. ... First "low-Z abundances" to be published were AGS05. ... 5.5 . ... 6.22 AG89 : Anders E., Grevesse N. 1989. ...

Еще в разделе: (Показать все результаты (>1181) - crydee.sai.msu.ru/ )

• Explanations for solar physics computing page
• Analysis of a cosine wave
• ApSA courses

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? ...

Еще в разделе: (Показать все результаты (>532) - lnfm1.sai.msu.ru/ )

• Natural Satellites Service. Apparent Encounters of the Tycho-2 Catalogue stars
• Y.Kupryakov, SAI, MSU
• ji0003