... Bad Astronomy . ... Every few months, one of a series of questions comes up on the USENET group sci.astro involving tides, or the rotation of the Moon, or the recession of the Moon from the Earth. ... Why the Moon's rotation period is the same as the length of time it takes to orbit the Earth (same as number 1, but phrased differently). ... But when this happens, the time it takes for the Earth to rotate once will be slowed to exactly the same time it takes for the Moon to go around the Earth once! ...

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. ...

This page contains the table of contents and select excerpts only and is not a complete reproduction of this issue. Complete content for online Mercury is available to ASP members and institutional subscribers . ... New stars are shrouded in dust and gas, but thanks to data acquired by the Spitzer Space Telescope, we're finally uncovering their secrets. ... NASA's New Airborne Observatory Sees "First Light," Nicholas A. Veronico . ... Astronomy in the News . ... Editorial, Paul Deans . ...

... The numbers of three types of compact binaries containing accreting NSs and BHs, which are most interesting from the point of view of their observational appearances, have been calculated as a function of time: i) X-ray transient source containing a NS in an eccentric orbit around a main sequence Be-star (the observed prototype: A0535+26), ii) BH The evolution of the selected types of X-ray binaries during the first 10 million years after the starburst onset is presented in Fig. ...

... N.A.Bobylev, Yu.M.Burman, Morse lemmas for functionals of the variational calculus, Func.Anal.Appl., ... N.A.Bobylev, Yu.M.Burman. ... N.A.Bobylev, Yu.M.Burman, A.B.Shubin, Algorithms for control with a minimal number of switchings, Automation and remote control , V.53, 5:619, 1992. ... TeX file ) . ... Quadratic Poisson brackets compatible with an algebra structure . ... Yu.M.Burman. ... Yu.M.Burman, Whitney's index formula in higher dimensions and Laplace integrals , Preprint math.DG/9801044 . ...

. Quantum clock (atomic clock) - the time measuring device containing quartz generator, controlled by the quantum frequency standard . Atoms play a role of pendulum. The frequency of atoms radiation while the atoms passing from one energy level to another regulates the quantum clock. This frequency is so stable (error 10^-11 - 10^-13) that quantum clocks allow to calculate the time more exactly, then astronomic methods. Back .

hstpolima -- Reduce linear polarization data for HST instruments . ... Name of STSDAS table file giving the parameters for polarization determination for the instrument corresponding to the input images. ... The upper limit on the polarization error (%) for data to be included in the output files. Pixels in output images with polarization error greater than errlim have the values set to zero in all the output images. outroot = "" [name] . ... outroot + poler - error on linear polarization (%) . ...

... Master . Master net Homepage . ... MASTER-Amur . ... Amb: . Dust: . ... Direct . 23s . ... 45s . ... observed area: . best limit: . Cameras . ... MASTER-Tunka . ... MASTER-Ural . master.kourovka.ru . ... MASTER-Kislovodsk . ... MASTER-Crimea . ... MASTER-SAAO . ... MASTER-IAC . ... MASTER-Argentina . master.sai.msu.ru:8080 . master.sai.msu.ru . ...

... One of the oldes collection of benchmarks in light scattering looks to be the book of N.C.Wickramasinghe (1973, Light Scattering Functions for Small Particles with Applications in Astronomy, Chapman Hall, London). ... Voshchinnikov Farafonov (1985) Opt. Spectrosc. ... Voshchinnikov Farafonov (1986) Opt. ... Mishchenko (1991) J. Opt. ... 1992) J. Quant. ... 1996) J. Quant. ... Mishchenko et al. ... Opt. ... Mishchenko Mackowski (1996) J. Quant. ... Mishchenko (2000) Appl. ... 2000) J. Quant. ...

Добро пожаловать, Гость . ... На форуме начался конкурс - Астрофотография месяца: АПРЕЛЬ! ... Астрофотография (Модераторы: Павел Бахтинов , Ivan Mhitarov ) ? Logitech QC 4000 и 5000 . ... 0 Пользователей и 1 Гость просматривают эту тему. ... Рейтинг: +19/-3 . Ответ #40 : 08.01.2006 [00:19:13] ? ... Записан . ... Рейтинг: +126/-2 . ... Гость . ... Рейтинг: +369/-27 . ...

RADIOASTROPHYSICAL DEPARTMENT  INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . ... Radioastrophysical Department , Institute of Solar-Terrestrial Physics, Siberian Division, Russian Academy of Science. ... Head of Laboratory dr. Gubin A.V. LABORATORY of INFORMATION SUPPLY and METHODOLOGY of RESEARCH . ... Head of Observatory Kitsanov S.V. SIBERIAN SOLAR RADIO TELESCOPE . Siberian solar radio telescope data at 5.7 GHz in I SOHO EIT 171 SOHO EIT 195 SOHO EIT 304 MDI Continuum MDI Magnetogram . ...

. General Information . Media Files . Participants . Timetable . Local Information . Photos . We have added a photo gallery ( http://site2010.sai.msu.ru/photo ). It contains some pictures with area around ASM of SAI, Kislovodsk and several sigths. The gallery will being enlarged.

M obile A stronomical Sy stem of TE lescope- R obots MASTER-II Kislovodsk Lomonosov Moscow State University, Sternberg Astronomical Institute , Moscow Union "Optic" , Kislovodsk Solar Station Latitude = 43 o љ44'.767љN; Longitude = 42 o љ31'.417љE; Altitude = 2067љm MASTERљIIљ(8љsquareљdegress) + MASTERљVWF(VeryљWideљFieldљCameras (FOV=800 square degrees, Timeљresolutionљupљtoљ150љms, with unfiltered m_lim=14m on 5 sec. exposure, and ~10.5m with 0.15 sec) . ... 11h 38m 38.0s , -09d 59m 59s) . ...