... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

Sloan Digital Sky Survey Telescope Technical Note 19970728 Edward J. Mannery and Walter Siegmund . ... Common corrector mount inspection . ... The corrector nearest the secondary mirror, the common corrector (so named because it is common to both imaging and spectroscopic configuations) is located with respect to the telescope optics support structure by the common corrector mount. ... The fused silica common corrector is 32.5 inches in diameter and is 0.47 inches thick. ...

. ATLAS is a project to image seven square degrees of sky, in two fields (CDF-S and ELAIS-S1), at radio wavelengths, to an rms of about 15 Jy, making it the widest deep radio survey aver attempted. The fields are chosen to cover the Spitzer Wide-Area IR Extragalactic Survey (SWIRE), and the radio images cut through the dust, to trace the cosmic history of AGN and star-forming galaxies. This page last updated by Ray Norris 5-Mar-2007

... 142,800 Mean density (kg/m^3) .. ... 5.203 Rotation period (length of day in Earth hours).. 9.8 Revolution period (length of year) (in Earth years). 11.86 Obliquity (tilt of axis) (degrees).. 3.08 Orbit inclination (degrees).. 1.3 Orbit eccentricity.. 0.048 Mean surface temperature (K)........................ 120 (cloud tops) Visual geometric albedo.. 0.44 Atmospheric components.............................. 90% hydrogen, 10% helium, .07% methane Rings.. ...

... The Large Magellanic Cloud is a Dwarf Irregular galaxy in orbit around our own Milky Way. It is a large object, several degrees in size, and easily visible to the unaided eye in Southern Hemisphere skies. The LMC is located in the constellation of Doradus at about 5h30m Right Ascension, -68 degrees Declination, and lies at a distance of roughly 50 kiloparsecs (160,000 light years) from Earth. ...

... UB313: Larger than Pluto . ... Credit: Thierry Lombry Explanation: What do you call an outer Solar System object that is larger than Pluto? ... The question arose recently when 2003 UB313 , an object currently twice as far out as Pluto and not in the plane with the rest of the planets, was verified recently to be 30 percent wider than Pluto . ... NASA Web Site Statements, Warnings, and Disclaimers . ... Публикации с ключевыми словами: Pluto - Solar System - Плутон - солнечная система . ...

... June 21, 1996 . A Very Large Array of Radio Telescopes . ... Explanation: Pictured above is one of the world's premiere radio astronomical observatories: The Very Large Array (VLA). ... The VLA is continually making new discoveries, including determining the composition of galaxies , passing comets , quasars , HII regions , and clusters of galaxies . The VLA is also used to receive the weak radio signals broadcast from interplanetary spacecraft . ... About APOD | ...

... The three optical trains for the cameras, and the pupil reimaging system, are mounted on a wheel, accurately driven by an external motor. ... The low-resolution spectroscopic mode uses the wide field camera and a suitable set of grisms and order sorting filters that are inserted in the parallel beam after the pupil. ... One of the five grisms can operate at four different orders, depending on the filter selected on the first filter wheel that acts as order sorter. ...

We present an analysis of the stellar kinematics of the Large Magellanic Cloud (LMC) based on ~5900 new and existing velocities of massive red supergiants, oxygen-rich and carbon-rich asymptotic giant branch (AGB) stars, and other giants. ... The metallicity differences provide strong evidence that the kinematically distinct population originated in the Small Magellanic Cloud. ...