... You are here: start €Ё difx €Ё difx2.0multipc . ... In a single pass, you can generate a near-arbitrary number N of independent phase centres, each of which are written out as an independent data file, just as if you had run the correlator N times. ... However, imaging that entire primary beam at VLBI resolution is prohibitive - it requires 10s or 100s of TB of visibilities to be produced, and the end result would be an image with 100s of Gpixels, 99.9999999% of which would be noise. ...

... INTEGRAL Science Data Centre, Chemin d'?cogia 16, CH-1290 Versoix, Switzerland . ... The INTEGRAL Science Data Centre, implemented by a consortium of scientific institutions, is the part of the ground segment which deals with the interface between the scientific community and the INTEGRAL data. ... This has led to the concept of the INTEGRAL Science Data Centre (ISDC). This centre is the interface between the INTEGRAL data and the users' community. ... 200 housekeeping records per instrument . ...

... But infrared light can more easily penetrate the dust and this recently released Infrared Space Observatory ( ISO ) mosaic, together with other similar images, shows about 100,000 previously unseen stars of the Milky Way's central regions. ... The stars are mostly evolved red giants , intrinsically cool, large, bright stars that have swollen after exhausting their central supply of hydrogen fuel. ... Publications with keywords: infrared - red giant - Galactic Center . ... Infrared Andromeda . ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Observing Podcasts . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... French National Centre for Scientific Research . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... Frequency: 30 GHz Bandwidth: 20% Edge taper: 30dB@22° Cross-polar level: <-25 dB Return loss: >25 dB Features: 1. ... Compactness Phase centre near to the radiating aperture Noticeable secondary lobe level in the upper frequency band Noticeable pattern differences over the band Related notes: 1. Improved throat features for machine tool 2. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... When Venus is on the far side of the Sun, we see the entire near side lit by the Sun. ... When it is on the near side of the Sun, it shows a beautiful thin crescent, because it is between us and the Sun and we see the mostly unlit dark half. ... To see this for yourself, draw a circle one centimeter across, then, next to it, draw a circle 6 centimeters across. ... 2008 Phil Plait. ...

... Recherche dans le site : . Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualit†йs . ... 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 Plong†йe au centre de la Voie lact†йe . ... Ce n'est pas la premi†иre fois que le t†йlescope Hubble est point†й en direction du centre de la Voie lact†йe . ... 02/02/2016 - Panorama lunaire dans la mer des Pluies . ...

Magnetic Stars, 2011, pp. ... 2010). ... 463 Figure 2: Difference between individual and average spectra in Fig. 1 with phase (vertically, on the right) Figure 3: Almost in a year repeatability of spectral lines form (2009.07.05 and 2010.05.31) in an identical phase 464 CHOUNTONOV 4000 3000 Magnetic field, Bz(G) 2000 1000 0 -1000 -2000 2008/05/23 2010/05/31 -3000 0.0 0.2 0.4 0.6 0.8 1.0 phase Figure 4: Longitudinal magnetic field variations with phase (the sine curve, Rivinius et al., ...

... Par une nuit noire, ces ?toiles forment une bande lumineuse ? travers le ciel -- "la Voie Lact?e" des observateurs de la Gr?ce antique, et pour nous, c'est notre galaxie. ... Les astronomes ont longtemps soup?onn? qu'il s'agissait d'un trou noir tr?s massif, et que, de m?me, chaque galaxie pr?sentait une masse centrale, apparue rapidement dans l'histoire de l'univers. ... Les lois de la physique ont ?cart? toutes explications, sauf une : c'est incontestablement un ?norme trou noir. ...

... Milky Way . ... Map of the Milky Way (based on data from NASA's Spitzer Space Telescope) showing its two major stellar arms and central bar. ... ТљIn written science fiction, one often encounters another navigational convention, where towards the Galactic Centre is described as т??Corewardт??, away from the Centre towards the rim of the Milky Way is т??Rimwardт??, objects in the direction of the Galaxyт??s rotation are т??Spinwardт??, while objects in the opposite direction are т??antispinwardт?? ...

... The distributions of orbits eccenttricities and of angular momenta for the halo stars and the old disk population are considered. The distributions have gaps separating the halo from the disk and dividing the halo population into three groups. ... Рассмотрены распределения звезд гало и старого населения диска по величине эксцентриситета орбит и угового момента. Распределения имеют провалы, отделяющие гало от диска и делящие населения гало на три группы. ...