Statistics of sunspot activity . The sunspot indices . ... Visual indices of solar activity . ... n - number of spot groups . A - Waldmeier class of unipolar spot groups without penumbra . B - class of bipolar spot groups without penumbra . C - class of bipolar spot groups with one penumbra pole . D - class of small bipolar spot groups with two penumbra poles . E - class of middle bipolar spot groups with two penumbra poles . ... H - class of unipolar penumbrated spot groups . ...

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

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The Second U.S. Naval Observatory CCD Astrograph Catalog ( UCAC2 ) Table of Contents 1) Introduction 2) Summary of the Project a) Observations and Instrumentation b) Reductions of UCAC Observations c) Computation of Proper Motions 3) Properties of the Catalog and Important Notes For the User a) Sky Coverage b) Completeness c) Positions, Proper Motions and Error Calculations d) UCAC2 Magnitudes e) 2MASS Photometry f) Non-stellar ... All stars in the UCAC2 have proper motions. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... les plus belles images de l'Univers d†йcrypt†йes pour vous . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Avis de temp†кte sur Saturne . ... Une violente temp†кte est apparue dans l'h†йmisph†иre nord de Saturne, elle est facilement observable dans le ciel du matin par les amateurs †йquip†йs d'un t†йlescope. ...

НАУЧНО-ПРОИЗВОДСТВЕННОЕ ОБЪЕДИНЕНИЕ им. С.А. ЛАВОЧКИНА . ... ЭкзоМарс 2016 . ... Социальные проекты . ... Проекты . ... ФГУП 'НПО им. С.А. Лавочкина' - крупное конструкторское и научно-производственное предприятие, проводящее работы по проектированию, изготовлению, испытанию и комплексной отработке ключевых автоматических космических аппаратов для фундаментальных научных исследований. ... Новости Проекты . ... 2016, ФГУП "НПО им. С.А. Лавочкина" - все права защищены ? ...

... Научная панорама ? arxiv:1408.4987 Влияние социальных движений на политику в области космической ас . ... arxiv:1408.4987 Влияние социальных движений на политику в области космической астрономии (The Influence of Social Movements on Space Astronomy Policy) . ... Но ясно, что в стране, где у людей могут отбирать пенсии, лишать лекарств, препятствовать нормальному отдыху и т.д. и т.п., - а "народ безмолвствует", - все это не актуально. http://xray.sai.msu.ru/~polar/sci_rev/316.html#arxiv/1408.4987 . ...

Abstract -- Calculations are performed for the linear polarization of starlight due to extinction by aligned dust grains when the starlight traverses a medium with irregular magnetic fields. This medium is intended to represent the optically thick components of interstellar clouds which are observed to make little, if any, contribution to the polarization of starlight. ...

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GPS GP-37 () GPS . ... GPS- (John A. Klobuchar) [3]. ... GPS GP-37, Furuno. ... Datta-Barua S., Doherty P.H., Delay S.H., Dehel t., Klobuchar J.A. Ionospheric scintillation effects on single and dual frequency GPS positioning. ... Air Force Surveys in Geophysics, No. ... Klobuchar, J. A. Ionospheric Time-Delay Algorithm for Single-Frequency GPS Users. ... Global Positioning System Standard Positioning Service (SPS) Signal Specification. 2nd Edition. ... Klobuchar, J. A. Ionospheric Effect on GPS. ...

... Spherical aberration, coma, and astigmatism are also easily observed using the star test. ... Off-axis images are complex. ... Fig. ... Diffraction by a circular aperture as a function of defocus for no aberration Airy Disk 1 wave defocus Less than 1 wave defocus Fig. ... Diffraction by a circular aperture as a function of defocus for third-order spherical aberration Paraxial Focus Small distance inside paraxial focus Moderate distance from marginal focus Immediate neighborhood of marginal focus Fig...

... 35, No. 2, pp. 87­99. i Star Formation History in the Central Region of the Barred Galaxy NGC 4245 O. K. Sil'chenko1* , I. V. Chilingarian1, 2 , and V. L. Afanasiev 1 2 3 Sternberg Astronomical Institute, Universitetskii pr. ... The galaxy has been found to possess a pronounced chemically decoupled compact stellar nucleus, which is at least a factor of 2.5 richer in metals than the stellar population of the bulge, and a ring of young stars with a radius of 300 pc. ... NGC 4245. ...

... Catalog . ... This web application is brought to you by the following people (in alphabetical order): . Alexey Sergeev, markup issues . Artemy Tregoubenko , JavaScript code . Elena Glushkova, content management . ... We would like to acknowledge the usage of these open source technologies: . Django , web framework . PostgreSQL , database management system . ... SAMP-Webtools , set of JavaScript tools for SAMP-enabled web applications . Developed by the Team . ...

Download Izmccd (~2.7 MB). The program Izmccd is intended for precision astrometric processing of a CCD frames. This program allows to determine an equatorial coordinates of minor planets, comets, satellites of major planets, visually double stars and other objects. Also you have an opportunity of identification of known minor planets and a detection of moving objects. ... Using of program. ... Solution of problems at identification of star field. Designation of objects on image. ...