... Киевский клуб любителей астрономии "Астрополис" > . ... Запорожский клуб АЛЬТАИР > . SUN: Apparent Geocentric Positions, astronomical script . ... Жизнь клуба . ... 05 Май 2006, 03:02:20 ? ... SUN Apparent Geocentric Positions . ... 2006 May 05 00h00m00s 2h 47m 38.744s +16* 09' 09.47" . 2006 May 06 00h00m00s 2h 51m 30.299s +16* 26' 14.04" . 2006 May 07 00h00m00s 2h 55m 22.396s +16* 43' 02.11" . ... 2006 May 05 00h00m00s 2h 47m 38.729s +16* 09' 09.43" . ...

. Next: Faraday rotation and the Up: The Interstellar medium Previous: Distribution in size of . љ . Greater path lengths for scattered photons . Smearing of pulses by . Loosely correlated with DM . Scattering angles are sufficient to make the apparent angular size observable - diam . 0.1 arcseconds at 100MHz for the Crab pulsar . љ љ . Figure 14: Scattering of the Vela pulsar. From Lyne & Graham-Smith 1990 [ 23 ] . Jon Bell . Thu Dec 19 15:15:11 GMT 1996

Natural Satellites Service. ... Apparent Encounters . of the Tycho-2 Catalogue stars and the main natural planetary satellites . ... with the Tycho-2 Catalogue stars. ... Instead of three numbers (ntch1 ntch2 ntch3) describing a position of a star in the Tycho-2 catalogue, one conditional number is given. ... Apparent Encounters of the Tycho-2 Catalogue stars and the Galilean satellites of Jupiter . Apparent Encounters of the Tycho-2 Catalogue stars and the major satellites of Saturn . ...

... OOF . ... OOF Index . ... Why defocus? OOF software . ... The model beams with various amount of defocus for a telescope with moderate coma and the error beam for that focus setting, that is the difference between the model beam and the model beam for a perfect (no coma) telescope. Defocus . Beam . Error Beam . ... 1 rad . ...

... For calculation of apparent place of some star there are two methods. ... The second method is to use formulae of this page together with information from 'Mean places ...' and 'Reduction quantities' pages. ... Here: ALPHAmean, MUalpha - mean right ascension and mean proper motion in right ascension of some star at mean epoch of the year, . DELTAmean, MUdelta - mean declination and mean proper motion in declination of some star at mean epoch of the year, . ...

. Pulkovo NEO Page . Central Astronomical Observatory at Pulkovo . of Russian Academy of Sciences, St.-Petersburg, Russia . Apparent Close Approaches of Near-Earth Asteroids to the Stars for April 2016 . By these observations it is possible to obtain the positions of asteroids with higher accuracy. This page includes the ephemerides of such phenomena for some observatories, namely: . Pulkovo . CrAO . Kourovskaya . Majdanak . Pulkovo Obs. Mountain Station . Mondy .

Blackholes2 Forum Message . Forums: . Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... Discussion Forums | ... Apparently You Do Not Accept Conventional Physics . Forum List | ... Fields result from accelerating charges. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

The reduction of a given magnitude m to bt is given by: . bt = a.m + b + c.(logr25 - <logr25>) . ... e.(logd25 - <logd25>) . f.(de1950 - <de1950>) . where a, b, c, d, e, f, <logr25>, <t>, <logd25> and <de1950> are constant values given in the table here below for each reference taken into account. The mean bt magnitude is calculated as a weighted mean where the weight (last column) is derived from each source of magnitude as the inverse square of the mean standard deviation. ...

... Searching for Far Out and Wandering Worlds . An artificial comet holds secrets to Earths life . ... Supernova showered Earth with radioactive debris . ... How do scientists predict the orbit and apparent т??peakт?? magnitude of an incoming comet such as Comet ISON (C/2012 S1) when it is far from Earth? ... COMET ISON . ... Comets are like small planets that follow orbits of all shapes and sizes around the Sun. ... Get instant access to subscriber content on Astronomy.com! ... Trains.com . ...

... Hubble Detects Faster-Than-Light Motion in Galaxy M87 . ... Click on image for larger version. (100kB GIF) Sequence of Hubble images showing apparent motion at six times the speed of light in the galaxy M87. ... The slanting lines track the moving features, and the speeds are given in units of the velocity of light ``c." The images were made between 1994 and 1998 with the Faint Object Camera on the Hubble Space Telescope. ... PHOTO CREDIT: John Biretta, Space Telescope Science Institute. ...

... CoordConv is written in C++ and Python, using SWIG as the C++ wrapper. ... In Python the following will convert an FK5 J2000 position to apparent topocentric coordinates at a specified TAI date: import coordConv taiDate = 4916391905 # TAI date in MJD, seconds site = coordConv . Site (-105.822616, 32.780988, 2788) # Apache Point Observatory 3.5m telescope # For better accuracy you may also specify UT1- TAI and pole wander in site ; # these may be obtained from IERS Bulletin B fk5Sys = ...

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... Travel to La Silla . ... Travel to E-ELT Armazones . ... Survey Telescopes . ... Star Clusters . ... Stars@ESO . ... ESO Science Newsletter . ... ESO 3.6-metre telescope . ... NGC 5011C is a dwarf galaxy located in the Centaurus A group, while its companion on the sky is in fact an S0 galaxy, located 12 times further away and belonging to the Centaurus cluster of galaxies. ...

... 8, ``Celestial Mechanics'', 2002 Connection between apparent and real orbits of a binary system P. Descamps Institut de M'ecanique C'eleste et de Calcul des ' Eph'em'erides, Paris, France In a binary system, each body describes about the other an elliptical apparent orbit which is the projection of the real orbit on the tangential plane. ... 0.5 0.0 0.5 Dacosd (arcsec) ­0.5 0.0 0.5 Dd (arcsec) E N W ­0.5 0.0 0.5 Dacosd (arcsec) ­0.5 0.0 0.5 Dd (arcsec) E N W October 2001 November 2001 Fig. ...

XMM-Newton Science Analysis System . ... Input AHF file . Data set defining the position of the moving object as a function of time with the following minimal column structure: . column name . ... apparent geocentric Right Ascension . real32 . deg . ... apparent geocentric Declination . ... XMM-Newton SOC/SSC -- 2008-07-01 ...

Astronotes Armagh Planetarium's Stellar Blog! ... Space Flight . ... Earth Satellites . ... Leonid meteors seen from 13 km altitude aboard an aircraft during the 1999 Leonids Multi-Instrument Aircraft Campaign (Leonid-MAC). Comet Tempel-Tuttle provides the cometary debris for the Leonid meteor shower. ... Every 17-19 November Earth crosses Tempel-TuttleтАЩs orbit and the Leonids become visible. With clear, dark skies observers may see 10 to 15 Leonid meteors every hour on those mornings. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... 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 Le 27 ao†Ёt, Mars ne d†йtr†‡nera toujours pas la Lune . ... Le fait que la plan†иte Mars apparaisse plus grosse que la Lune dans le ciel nocturne est un canular d†йj†а d†йsamorc†й en d†йtail sur le site de Ciel et Espace dans un article du 18 ao†Ёt 2009 . ... Etat du ciel...

Physical limit to variability timescale 1 1 2 The central engine can change its state in a time Rg /c Rg ­ Schwarzschild radius The faster blob catches up with the slower one at the distance Lin Lsh = c 2 2 Lin 1 v2 - v1 L in ~ R g 2 1 L sh The minimum apparent duration of the light burst (at = 0): Lsh Rg 2 2 c c Geometrical implications Instantaneous and synchronous (in the lab frame) release of energy by the sho ck results in ...

... 2011: . ... The measurements of the apparent diameter of a long-period variable star R Leo, a cold pulsating giant in the last stage of evolution, the scales of which are hundreds of times larger than the Sun were conducted at the 6-m BTA telescope. ... The discovered effect explains the observed anomalously large values of the pulsar slowdown indices, as well as the known differences in the estimates of their ages with the ages of the corresponding supernova remnants. ... Archive . ...

Eyepiece Apparent Field of View (FOV) Table . Eyepiece . ... Celestron SMA . ... Celestron Ultima . ... Celestron Vixen Lanthanum . ... Meade Series 3000 Plossls . ... Meade Series 4000 Super Plossls . ... Meade Series 4000 Super Wide . ... Meade Series 4000 Ultra Wide . ... Orion Sirius Plossl . ... Orion Ultrascopic . ... Orion Explorer II . ... Orion Lanthanum . ... Orion Lanthanum Superwides . ... Table compiled by Bill Castro and Matt Oltersdorf ...