... 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 Unit Telescopes Overview - This page is outdated, an update is in process.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 Secondary mirror (M2 Unit) - This page is outdated, an update is in process.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 Coating Unit - This page is outdated, an update is in process. ...

... 2002 September 6 . HESS Gamma-Ray Telescope . Credit: The HESS Collaboration . Explanation: Most ground-based telescopes with lenses and mirrors are hindered by the Earth's nurturing, protective atmosphere that blurs images and scatters and absorbs light. ... As the gamma rays impact the upper atmosphere they produce air showers of high-energy particles. ... About APOD | ...

... Credit: The HESS Collaboration Explanation: Most ground-based telescopes with lenses and mirrors are hindered by the Earth's nurturing, protective atmosphere that blurs images and scatters and absorbs light. But this telescope was designed to detect extreme gamma rays - photons with over 100 billion times the energy of visible light - and actually requires the atmosphere to operate. As the gamma rays impact the upper atmosphere they produce air showers of high-energy particles. ...

... Apr 14, 2016 - Monthly Meeting . ... The Amateur Telescope Makers of Boston, Inc. ATMoB) is an astronomy club devoted to telescope making, observing, and studying the heavens. ... CURRENT MOON . ... April Sky . ... Lyrids Meteor Shower . ... Sources: NASA JPL Space Calendar , StarDate Online , Sky Telescope , Harvard-Smithsonian Center for Astrophysics , RASC Observer’s Handbook , Abrams Planetarium Sky Calendar and Astronomy Magazine . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . Australia Telescope Compact Array . ... CSIRO, Australia's national science agency, operates a number of world-class radio astronomy observatories that are collectively known as the Australia Telescope National Facility or ATNF. ... CSIRO also manages the Murchison Radio-astronomy Observatory, where the Square Kilometre Array telescope infrastructure in Australia is to be centred. ...

... 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. ...

The focal plane window shows the orientation of the sky and axes relative to the focal plane, and also (via the outer spiral) the wrap of the instrument rotator. ... The coordinate frames are shown with respect to the CCD; i.e. they show how things look on your image (unless your image viewing software introduces a flip). ... All axes will either be right handed or left handed, depending on how many mirrors are in the light path and which corner of the CCD is read out. ...

... Meteors and Meteorites . ... By admin August 2, 2011 Posted in: August . 13 August 2009: A perseid flashes through the sky (Image credit: Andreas M†ґller via wikimedia.org) . ... Not all meteors are sporadic events, the regular meteor showers occur when the Earth bulldozes through a great swarm of meteoroids drifting in orbit round the Sun. ... They are at their best in the pre-dawn hours, as the face of the Earth turning towards the Sun catches more meteors as the Earth moves through space. ...

... This past spring, as Comet Hyakutake decorated our evening skies, I received a telephone call from an upset parent. We bought our daughter a telescope to see the comet," she said, "and we can't see anything!" The exasperated mother said they found binocular