... Sun images . ... Active areas . February : 2014 . ... The following regions with sunspots can be now observed on the Sun's surface . Group number . ... Group length (in degrees) . ... Beta-Gamma . ... Coordinates and other characteristics of active regions are issued for February 10, 2014 00:31 UT The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates and other characteristics of active regions are issued for February 10, 2014 00:31 UT . ...

Statistics of sunspot activity . The sunspot indices . ... The solar regions . ... 2016 . ... February . ... February, 2016 . Visual indices of solar activity by author's observations . ... Average . ... 0.00 . ...

... Observing . ... Home Education Workshops at Adorama Astronomy Workshop: Observing Variable Stars from the City ? February 15, 2015 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Presented by€а Adorama €аFor the Amateur Astronomers Association of New York . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

THE RELATIVE MONTHLY MEAN SUNSPOT NUMBER ON FEBRUARY 2014 HAS MADE W feb.= 102.8, THAT GIVES FOR 61 MONTH (2013, JULY) DEVELOPMENT CURRENT 24 CYC- LES OF SOLAR ACTIVITY THE SMOOTHED MONTHLY MEAN SUNSPOT NUMBER W*june = 69.0 THE BEGINNING 24 CYCLES OF SOLAR ACTIVITY - I 2009 with W*=1.8 THE MOST PROBABLE TIME OF THE MAXIMUM OF THE CURRENT CYCLE- XI.2013 - I 2014 THE MOST PROBABLE HEIGHT OF THE MAXIMUM - Wmax = 68 - 75. ... 170.3 THE MONTHLY MEAN OF GEOMAGNETIC Ap-index ON 2014, FEBRUARY Ap feb.= ...

These observations are aimed at fully charactering FORS1 photometric system (UBVRI zero-points, color-terms and extinction coefficients) for the Tektronix 2048x2048 pixel CCD (24µm px) . To this aim, the two Landolt/Stetson photometric fields SA95 and SA101 will be observed on a number of epochs and at different airmasses during February and March 2007. ... SA101 . ... OBs for SA101 have to be observed during evenigh twilight (exceptions are expected for the second half of March) . ...

Plans are under way to create a new way of performing non-interactive observations which will be called auto-observing . ... Non-interactive observing with CIMA has for a long time been available with the use of CIMA command files. Contrary to normal command file observing which requires a command file with a set of commands to be executed sequentially, auto-observing will use a list of sources and a list of instructions on how to observe each of the sources. ...

... Tonight's Sky . ... The Magazine . News . Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Asteroid DayУ?т??т??s Don Yeomans: Will asteroid 2013 TX68 strike Earth? ... February 2013 . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

Last modified: 26 February 2001 . ... VS codes are for the VSOP survey VT codes are for Test/Calibration Observations --------------------------------------------------------------------- EXPNO SOURCE FRQ Corr DOY DY: DATE UT RANGE #TEL TELESCOPES W412a J0433+05 C* Socr 52 We:Feb-21 20:00 - 06:00 12 VLBA AT W314a4 J1927+73 C Socr 58 Tu:Feb-27 19:00 - 05:00 12 VLBA EB V034b W027a W069a4 J1642+39 L* Socr 61 Fr:Mar-02 07:00 - 21:00 12 VLBA EB W419b W069b4 J1642+39 C* ...

... 2002 February 4 . Comet LINEAR (WM1) Shines in the South . ... Explanation: A new comet has brightened unexpectedly and is currently visible to unaided observers of southern skies. Comet C/2000 WM1 (LINEAR) is now reported by some observers to be at third magnitude , making it brighter -- although more diffuse -- than most visible stars. ... Pictured above is the center of Comet LINEAR (WM1) taken the morning of February 1 from 300 km north of Sydney, Australia . ... About APOD | ...

Instrument Science Report FGS 2005-01 The FGS Astrometry in the Feb 2005 On-orbit Two Gyro Mode Test E. Nelan August 17, 2005 A BSTRACT FGS1r Astrometry was tested under the Two-Gyro Mode (TGM) pointing control law during the February 2005 on-orbit test. ... In each of these orbits the visit contained a single (long) exposure that observed the visit's particular target star for the remainder of the visibility period. ... Visit 02: Visit 02 employed a bright (V=9.9) dominant guide star. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Space Flight . ... Posted on April 6, 2016 | No Comments Spring has truly sprung. ... Continue Reading.. Posted on March 1, 2016 | ... Posted on February 2, 2016 | No Comments Goodbye January blues, hello February fun! ... Posted on January 7, 2016 | ... Posted on November 4, 2015 | ... Posted on October 5, 2015 | ... Posted on September 3, 2015 | ... Posted on August 3, 2015 | ... Posted on June 25, 2015 | ...

... APT Activities and Science Results 3. ... APT Secretary Philip Edwards (ISAS) reviewed the aims of the APT (http://www.vsop.isas.ac.jp/apt/DefinitionAndAims.html). ... The Australia Telescope Compact Array, and Ceduna, Hartebeesthoek, Kashima, Mopra, Parkes, and Shanghai telescopes of the Asia-Pacific Telescope participated in these observations. ... In the absence of Tetsuo Sasao, Philip Edwards briefly described results of the APT 22 GHz observations conducted from October 1st to 5th, 1997. ...

On February 11-13 1998 at Kiljavanranta near Helsinki an Interball project meeting was organized by the Finnish Meteorological Institute and Russian Space Research Institute (IKI) . ... Main attention was devoted to mechanisms and manifestations of magnetospheric substorms, as observed from space and from ground observations. Four time intervals were selected for a coordinated data analysis. ... Magnetospheric storm on October 22, 1996 ( The LLBL-Driven Substorm? ... Programme of the Workshop. ...

Participants at the international meteor workshop held at the Armagh Observatory from January 30 - February 1, 2007. Armagh Observatory last week held an international workshop entitled тАЬCoordinated Meteor Observations in 2007 and BeyondтАЭ. ... This was the first-ever scientific workshop with a meteor theme to be hosted by the Observatory in its more than 210-year history, and the meeting attracted astronomers from Britain, the Netherlands, Germany, and as far afield as Japan. ...

... February 3, 1998 . A Magellanic Mural . ... Explanation: Two galaxies stand out to casual observers in Earth's Southern Hemisphere : the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud (SMC). ... Recent observations of the LMC (on the left) have determined that it is on a nearly circular orbit around our Galaxy, and have even helped in the determination of the composition of dark matter in our Galaxy . ... About APOD > . ...

January 7, 2000 Dr. Eric Torrence, University of Chicago . ... 3:00pm, 240D Willamette Hall . Dr. Torrence will also present the Physics Colloquium on January 6. return to top . ... Dr. Morii will also present the Physics Colloquium on January 24. return to top . ... return to top . ... The ratio of the inclusive jet cross sections at center of mass energies 0.63 TeV and 1.8 TeV is also presented versus scaled jet transverse energy x_T and compared to QCD predictions. 3:00pm, 472 Willamette Hall . ...

Astronomy Picture of the Day . ... In February 1987, light reached Earth from a star which exploded in the nearby Large Magellanic Cloud galaxy. ... Galaxy Cluster A2199 . ... In fact, it is a close, large cluster of galaxies, containing several thousands of galaxies centered around a central dominant galaxy. ... Black Hole Signature From Advective Disks . ... If alone, a black hole would indeed appear quite black, but many black hole candidates are part of binary star systems. ...

spaceweb@oulu.fi - last update: 18 February 1997, 1100 UT (RR) . Black aurora is a lack of auroral emission in a small, well-defined region within an otherwise uniform, diffuse background or within auroras exhibiting a degree of shear behaviour intermediate between that of diffuse and discrete aurora (e.g., Davis, 1978). It appears to be a common feature of the midnight sector during late substorm recovery phase (Trondsen and Cogger, 1997). ... 30 , 371-380, 1978. ... 102 , 363-378, 1997. ...

... 8 February , 2014 SAI seminar (Ryde et al 2010) 5 Thermal emission from GRB jet progenitor observer photon jet Photosphere (=1) · · · · Photons are not produced at the photosphere We have to calculate radiative transfer We need to know where the photons are produced We construct the expression for effective optical depth in relativistic flow considering random walk process in relativistic flow SAI seminar 6 8 ... 8 February, 2014 SAI seminar 28 ...