... See you all on February 8th! ... David Lechter, Outreach Chair 2 February 2011 Amateur Astronomers Association of Princeton Mars Rovers Celebrate 7th Anniversary on the Red Planet NASA's twin Mars rovers Spirit and Opportunity surely rank as one of the greatest triumphs in the history of space exploration. ... 4 February 2011 Amateur Astronomers Association of Princeton Opportunity is driving to different vantage points around the steep walled crater and snapping a series of gorgeous Martian vistas....

. This image is a screen capture of the full width half max of the imager array taken on February 15, 2000. The left portion of the image is simply the fwhm calculations for each of the chips in the array. On the right side is the estimated fwhm corrected for wavelength. This takes all the different filters and converts the estimated seeing as if it were in i' I believe. It is useful as a measure of the consistency of image quality across the array. As you can see, it is quite good! . long@apo.nmsu.edu

... Eclipses of the Moon in 2009 : . In 2009 there are four eclipses of the Moon (tree penumbral eclipses on February 9, July 7, and August 5-6 and a partial eclipse on December 31). ... Moon enters penumbra (P 1 ) . ... Moon leaves penumbra (P 4 ) . ... Eclipse, lunar : . ... It may be total (the Moon passing completely through the Earth's umbra ), partial (the Moon passing partially through the Earth's umbra at maximum eclipse), or penumbral (the Moon passing only through the Earth's penumbra ). ...

... They are known: active quantum frequency standards on the ammonia molecules beams (molecular generator) on the hydrogen generator (hydrogen generator) passive quantum frequency standards on the Cs atoms’ beam (cerium atomic beam tube); active and passive quantum frequency standards with an optical pumping of Cs or Rb steams. The stability of atomic beam quantum frequency standard achieves 10^ - 14. ...

ECLIPSES, TRANSITS OF MERCURY AND VENUS . Year 1999 . Year 2000 . Year 2001 . Year 2002 . Year 2003 . Year 2004 . Year 2005 . ... Total solar eclipse . ... Transit of Mercury across the solar disk . ... Total lunar eclipse . ... Partial solar eclipse . ... Partial lunar eclipse . ... Annular solar eclipse . ... Penumbral lunar eclipse . ... big map . ... Transit of Venus across the solar disk . ... Annular-total solar eclipse . ... Non-central annular solar eclipse . ...

... 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 . ...

... Drop points . ... Pick ops use the point in a set nearest to the location of the pointer when clicked to select the set for the chosen operation. ... To activate a set, select the set number, specify the number of points in the set and click on "Accept." ... Press the button marked Accept . ... Press the button marked Accept to divide the selected set into (length of selected set) / N sets with the remainder to the last set. ... Press the button marked Accept to merge all sets to the selected set. ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... S.P. Korolev Rocket and Space Corporation Energia takes an active part in the proceedings of the 33rd Academic Lectures on Cosmonautics, which began at Bauman Moscow State Technical University (MSTU). ... The Chairman of the Central Election Commission (CEC) of Russia V.Y. Churov made a visit to S.P. Korolev Rocket and Space Corporation Energia. ... Contribution of RSC Energia to the Russian Rocket-Space Technology . ...

... Moon Phase below . ... ARTICLE: Why the moon always shows us the same face . ... Before you continue reading, you should know that this was not always the case, i.e. the Moon once was rotating with respect to the Earth, so that on every night a terrestrial observer (if there was one, because this was long, long before mankind appeared on our planet, and even before any major animals had appeared) saw another face of the Moon. ... Figure 1 (not to scale) shows how we can imagine the system Earth-Moon...

... Yu.A.Shokin Accurate positions of variable stars in the western part of the Large Magellanic Cloud bar (published in IBVS (No.5047, 14 March 2001) and SAI Proceedings) . B.S. Vozdvizhenskij The list of 2821 Venus positions (VINITI depository Oct 08 2007, N 956 B2007) . B.S. Vozdvizhenskij, E.N. Fedosseev The experience in processing long series of photographic observations of planetary positions (VINITI depository Apr 01 2008, N 274 B2007) . ...

... Synchrotron emission of a jet in the strong radial magnetic field of an AGN is analyzed. ... Often observed multi-component structures can be explained by the single jet in the model, if the flow of relativistic particles from the active nucleus varies in time. ... It is concluded that a narrow jet of relativistic particles emitted by the synchrotron mechanism in the strong radial magnetic field of an active galactic nucleus can be a real model for variable extragalactic radio sources. ...

The XIII Russian-Finnish Symposium on Radio Astronomy . Multi-Wavelength Study of Stellar Flares and the Properties . ... May 25-29, 2015 Pulkovo Observatory, Saint Petersburg, Russia . ... Plenary Session ( 09:10 11:10 ) . ... Sci. ... 4 talks 'Solar Physics' . ... Signs of preparation of strong solar flares based on simultaneous radio and magnetographic measurements . ... Current status of solar instrumentation in Mets hovi radio observatory . ... These diversiform solar flares (Plenary Talk) . ...

. To the main page . Skepticism . The following article is translated from Russian. If you find any grammatical errors, please send me a note . Active Skepsis .

Astronomical Data Analysis Software and Systems VII ASP Conference Series, Vol. ... A Parallel Procedure for the Analysis of Long­term Sequences of Light Curves A. F. Lanza, M. Rodon‘o 1 , U. Becciani and V. Antonuccio Delogu Osservatorio Astrofisico di Catania, Viale A. Doria, 6 ­ I 95125 Catania, Italy Abstract. ... 1995, Lanza et al. ... The minimization of the function Q for all the light curves of a given se­ quence, for fixed values of the system parameters, represents a cycle of the procedure. ...

... Towards a Truly Unified Model of AGN . ... The Unified Model holds that the aspect-dependent effects primarily determine the nature of the active galactic nucleus that we observe. ... The full postscript file can be obtained here: . The PASA Latex file can be obtained here: . The postscript file of Fig 1 can be obtained here: . ...

M87 Gas Disk and Optical Jet (STSci) . SEDS Messier Catalogue M87 Page (U. Arizona) . Black Hole and Jet in M87 (NASA/GSFC) . ... The large scale radio structure is shown in the 3CRR Atlas . Richard White's Virgo Cluster page has optical and X-ray images of the large-scale environment of M87 . ... HST Observes Distant Radio Galaxies (STScI) . HST Finds a Black Hole in NGC4261 (STScI) . HST finds a Bare Black Hole Pouring out Light in NGC6251 . ... Alan Bridle's Home Page . ...

This page is devoted to information on Supernova 1998T in NGC 3690 . Information on the original web pages for many of these images can be found on the Supernova links web page. ... According to http://www.cv.nrao.edu/~jhibbard/a299/a299.html and http://www.ifa.hawaii.edu/postdocs/vacca/images/arp299buv.html it follows that Arp 299 (aka Mrk 171) is made up of IC 694 (UGC 646471) on the east and NGC 3690 (H-247-1) (UGC 646472) on the west. ... Other images of 1998T . Ayabe image . ...

FF Aqr DW Period is significantly greater than typical value for DW type. According to Pojmanski [45] this star is DCEP-FU: variable. According to Sipahi et al. [263] it is one of the few binary systems which consists of the hot subdwarf and cool chromospherically active giant components. ... Belongs to long-period RS CVn systems, secondary is more massive and more larger (volume of the secondary is approximately 100 times larger than that of the primary component). ... So may be SA system? ...

. Cosmology . Very Early Universe . Cosmic Microwave Background Anisotropy . Dark Matter Models . Large Scale Structure . High Energy Astrophysics . Active Galactic Nuclei . Astrophysics of Compact Objects . Accretion Disks . Scientific Staff:

Neutron Monitors ] [ Solar Neutrons ] [ Muon Telescopes ] [ Base Potchefstroom University ] [ Magnetometers ] [ GPS systems ] [ Ionosphere ] [ Related Data ] [ Space Weather ] . ... All Cosmic Ray Stations + InterPlanetary Data: WorldNet . Alma-AtaB (Mt.Tien Shan) DataBase of Kazakhstan Spectrograph Alma-AtaB (Mt.Tien Shan) new . ... Nagoya Muon Telescope and DATA or mail . ... Belgrade Muon Telescopes and DATA or ">mail . ... Real-Time database for Cosmic Ray Anisotropy (DB10) . ...