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Hourly values of parameter foF2 (F2 layer critical frequency) The description of letters in the tables of parameter foF2 A blanketing. ... C non-ionospheric (equipment). D above upper frequency range of equipment. E below lower frequency range of equipment. F frequency spread. ... K particle E layer. L no sufficiently defined cusp between F layers. ... N superimposed layers. O measurement refers to o component. ... Q range spread. R attenuation near critical frequency. ...

... Solar System . ... Milky Way . Stars . ... Blue-white Vega is of course one of the brightest stars in our night sky lying about 25 light years from us in Lyra. ... Also in Lyra is the double star Beta Lyrae (Sheliak). This is in fact a close eclipsing pair of B-class stars about 960 light years from the Sun and was only the second eclipsing binary system to be discovered after Algol. ... Planet of Beta Lyrae (from The New Challenge of the Stars by Patrick Moore & David Hardy 1977) . ...

... Астрономия для всех (Модераторы: Deimos , AAV ) ? Нулевой меридиан . ... Сообщений: 164 . ... Скажите пожалуйста, как определяется нулевой меридиан для Луны, планет (в особенности, Марса) и их спутников? ... Записан . ... Они выбрали маленький круг (кратер) как точка справки когда они произвесли первую систематическую карту черт Марса в 1830-32 г. Нулевой меридиан Луны находится прямо в середине стороне Луны видна с Земли. ... Вот, нашел немножко на http://en.wikipedia.org/wiki/Prime_meridian . ...

... Activity 3: Measuring the Position of the Sun in the Sky . Purpose: To give students the opportunity to measure the position of the Sun in the sky using simple tools and methods. ... Alternatively, you may have students devise their own methods of relative measurement and apply them to measuring the position of the Sun in the sky. ... Rangi is the sky, and when the Sun is near Rangi's head it is summer in New Zealand. ... Read the Maori story to students. ... back to Teachers' Newsletter Main Page ...

Russian version of HP . ... StarCalc is the fastest professional astronomy planetarium & star mapping program for Windows 9x/ME/NT/2000/XP (StarCalc version for PocketPC computers you can found here ). ... Extensibility : This program is based on common "Plugin StarCalc interface to catalogs and object groups", which allows program to add new modules as Plugins. ... Welcome to the Pocket StarCalc Home Page: . ... Some bugfixes in eclipses" and line" plugins - see the new versions in downloads page. ...

Information Technology - Test methods for measuring conformance to POSIX. ... The general requirements and test methods for measuring conformance to POSIX standards are defined. ... asssertion, assertiobn test, base assertion, conditional feature, extended assertions, POSIX, POSIX Conformance Document, POSIX Conformance Test Procedure, POSIX Conformance Test Suite, test method, test result code . ... Section 4: Testing Levels and Complexity Levels . ... Section 7: assertion Test Output . ...

... We have compared visualized fields of GSC and USNO A1.0 catalog with unpublished photographic finding charts that were sent by L. Plaut to the compilers of the GCVS. ... 7-15 A9 --- GCVS GCVS or NSV name 17-25 F9.4 --- GSC GSC number 26 A1 --- NoteFlag *Nonstar (GSC) flag 28-29 I2 h RA2000GSC.h Hours RA (GSC), equinox 2000.0 31-32 I2 min RA2000GSC.m Minutes RA (GSC), equinox 2000.0 34-38 F5.2 s RA2000GSC.s Seconds RA (GSC), equinox 2000.0 40 A1 --- DE2000GSC.- ... Plaut, L., 1966, Bull. ...

University Satellites and . Space Science Education . ... Accurate Satellite Trajectory Determination Using IGS Precise Ephemeris . ... International Global Navigation Satellite Systems Service (IGS) let users of satellite navigation systems free access to the information of rather precise coordinates of every satellite in Greenwich coordinate system with two week delay. ... As a result of applying this algorithm the trajectory of every satellite was defined as precise as IGS data. ...

Download Izmccd (~2.7 MB). ... for 1-5 bytes is number of a numbered minor planet, . ... Positions 1-80 file "mpcreportiz.txt" are similar to positions of file "mpcreport.txt". 83-95 – errors of unit weight, . ... If this tag is " 1 0 " , this record contains results of measurements of an image of object (approximation by "PSF"),  . ... 57-66 – error in X (pixels), for first star in a multicentric image, for subsequent it is error in (distance between first star in the image and this), . ...

. The sharply-defined crater just above the center of this Cassini image shows layers of alternating bright and dark material. A thin dark layer on the crater wall appears to define the base of an ejecta blanket. Cassini was 8,314 miles (13,377 km) from Phoebe when this image was taken. NASA / JPL / CICLOPS

... GA89 GK89 weight 1 H 1.008 0.911 2 He 4.003 0.089 3 Li 6.939 -10.88 -10.98 4 Be 9.013 -10.89 -10.89 5 B 10.81 - 9.44 6 C 12.01 -3.48 -8.39 7 N 14.01 -3.99 -4.09 8 O 16.00 -3.11 -3.14 9 F 19.00 -7.48 10 Ne 20.18 -3.95 11 Na 22.99 -5.71 -5.72 12 Mg ... -7.44 31 Ga 69.72 -9.16 32 Ge 72.60 -8.63 33 As 74.92 -9.67 34 Se 78.96 -8.69 35 Br 79.91 -9.41 36 Kr 83.80 -8.81 37 Rb 85.48 - 9.44 - 9.44 38 Sr 87.63 -9.14 -9.14 39 Y 88.91 - 9.80 - 9.80 40 Zr 91.22 - ...

OpenFlow. ... tcpdump Nebula Server Floodlight HP 3500yl Server 1 Server 2 Node-1 1­ Node-2 Node-6 Server 1 ) 17Server OpenNebula [4], Node . OpenFlow ( Floodlight Open SDN Controller , Node, , OpenNebula ( ). tcpdump, . Nebula Server Floodlight . tcpdump HP 3500yl Server 1 Server 2 Master Slave-1 ­ Slave-2 Slave-16 511 1CPU, ( 8 3). ... 1500 Master ­ , 4 . ... Slave iperf Master 04, Master 80, 44, 145 17. ... 18 17670 Server (#monitor all both mirror 1), Server 2. tcpdump. ...

. Computer Ephemeris. Lunar equatorial positions. Explanations. Each row contains at 0 h and 12 h of Time Dynamical Terrestrial: month, day, apparent right ascension (hours, minutes, seconds), apparent declination (degrees, minutes, seconds of arc) and geocentric distance (in Earth's radii).

... This file descrip.doc 80 984 Authors' description ppmsouth.dat 131 197179 Positions and Proper Motions - South ppmsofmt.dat 138 197179 PPM South - in format of old PPM North -------------------------------------------------------------------------------- Byte-by-byte Description of file: ppmsouth ... Note on pmRA and pmDE: Proper motion in right ascension fro epoch and equinox J2000.0, on the system of FK5 given in seconds of time per Julian year. ... Part I. The Basic Fundamental...

... 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 . ...

SINGULAR POINTS IN THE SOLAR CHROMOSPHERE . ... In the structure of the solar chromosphere, containing information on the configuration of the magnetic field, we have found and identified all the main types of the singular points ( see Fig. 1 ), which are known as inherent features of the 2-D vector field. ... The main types of the singular points are the node, the focus, the center, and the saddle. ... Singular point of the focus type in the solar chromosphere. ...

This section of library contains information about "classic" Star Catalogs. ... For a Henry Draper Catalog 272149 stars have received a total of 531,211 identifications in 7 сatalogs: . 270456 - in Astrographic Catalogue ( "Carte du Ciel", 4M), . 251943 - in Guide Stars Catalog (GSC), . ... A file with information on the components of 1788 of multiple systems in catalog HDEC (3681 component, or a combination thereof, with 4054 recording). ... A file with information about 21971 variable stars. ...

... The overall globular cluster population is divided by gap in the metallicity function at [Fe/H]=-1.0 into two discrete groups with well-defined maxima at [Fe/H]=-1.60?0.03 dex, and -0.60?0.04 dex. ... Clusters with extremely blue horizontal branches occupy a spherical volume of radius ~ 9 kpc, have high rotational velocities ( V rot =77?33 km/s), have substantial and equal negative radial and vertical metallicity gradients, and are, on average, the oldest group (the old-halo subsystem). ...

... Space flight . ... On-line Data . ... a - defines the size of the orbit . ... i - defines the orientation of the orbit with respect to the Earth's equator . defines where the low point, perigee, of the orbit is with respect to the Earth's surface . ... defines where the satellite is within the orbit with respect to perigee . Info / On-line data: General description Position J-Track J-Track 3D Explanation . Info: Industry news On-line Data Company ATLAS news Events We in press Contact . ...