... Science User Portal . ... ESO, the European Southern Observatory . ... ESO Acronyms . ... A second shell mirror of remarkable quality has been delivered to ESO by SafranтАУReosc . ... Both mirrors are a mere 2 millimetres thin but 1.12 metres in diameter, and will be crucial for the upgrade of Unit Telescope 4 of ESOтАЩs Very Large Telescope (VLT) to a fully adaptive system. A thin shell mirror is deformed several thousand times per second to compensate for turbulence in the EarthтАЩs atmosphere. ...

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Another method is to take very fast exposures of an object; in effect taking images faster than the seeing can blur the image. ... A third, relatively new method, is to try to detect just how the seeing is affecting the image, and actually warp the telescope mirror to compensate. ... The advantage of the second method is that it's easier to make many small mirrors than one big one. ...

... GSAOI Home . Instrument . ... The Gemini South Adaptive Optics Imager (GSAOI) is a near-infrared adaptive optics camera that will be used with the Multi-Conjugate Adaptive Optics (MCAO) system on the Gemini South 8-m telescope . ... Gemini's major instrumentation goal is to develop its Multi-Conjugate Adaptive Optics (MCAO) system for scientific use on Gemini South. ... Existing adaptive optics systems use a single natural guide star or artifical laser guide star to measure this image blur. ...

Astronomy Picture of the Day . ... 18.02.2000 . ... Credit: AO Staff , Keck , LLNL Explanation: From the Earth's surface, Neptune usually appears as a fuzzy blotch. The blurring effects of the Earth's atmosphere deny clearer images. ... February 2000 . ... 1999 2000 . ... NASA Web Site Statements, Warnings, and Disclaimers . ... U. Based on Astronomy Picture Of the Day . Publications with keywords: neptune - adaptive optics . Publications with words: neptune - adaptive optics . ...

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... Primary Mirror after being stripped and recoated in 3-layer protected silver (NiCr-Ag-NiCr) on 12 September 2009. image: CIMG7901.jpg . ... Primary Mirror held by (yellow) handling tool being lifted off transport container (note the tennis balls it rested on), to be put on wash cart during unpacking at VISTA on 29 March 2008. image: P1060207.jpg (taken 29/03/08) . ... VISTA Mirror Blank: Shape of 4m primary mirror blank being tested at Schott Glas in Germany. image: M1_shape_checking-300dpi.jpg . ...

... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... Meade Series 5000 2" Enhanced Diagonal Mirror with SC adapter . ... Meade Series 5000 2" Enhanced Diagonal Mirror #07680. ...

Risulta chiaro che Giorgio Abetti era completamente dipendente da Hale a proposito delle caratteristiche tecniche del telescopio. ... Hale ed Abetti approfittano di questo evento “straordinario” e dell'interesse di Ellsworth per un curioso orologio di scarso valore conservato presso la cupola del vecchio osservatorio per chiedere ad Ellsworth, ed ottenere, un finanziamento per la costruzione della torre solare. ... In una lettera del 7 maggio 1924 Hale scrive ad Abetti: . ... La costruzione della . ...

... Up: Adaptive and Active Optics . ... 216, Astronomical Data Analysis Software and Systems IX, eds. N. Manset, C. Veillet, D. Crabtree (San Francisco: ASP), 381 . ... ESO is developing an array of software analysis packages to perform Photometry and Astrometry on both stellar and diffuse objects observed with Adaptive Optics (AO) Systems. ... Results of this astronomical AO data analysis are presented, i.e. photometric precision of 0.03 magnitudes, astrometric precision of 0.1 pixel in crowded fields...

... 2000 February 18 . Neptune through Adaptive Optics . Credit: AO Staff , Keck , LLNL . Explanation: From the Earth's surface, Neptune usually appears as a fuzzy blotch. The blurring effects of the Earth's atmosphere deny clearer images. ... The above image of Neptune in three infrared colors demonstrates the clarity of the new technique - as compared to an image of Neptune from Keck II without AO . ... About APOD | ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Australia Telescope Online Archive (ATOA) . ... ATCA | ... Australia Telescope 20GHz Survey . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

... Most Important Journals . Less Popular Astronomical Journals . Physics . Space, Selectial mechanics, .. Russian Journals . ... Astrophysics & Astronomy . ... Astronomical Journal . ... New Astronomy . ... Publications of the Astronomical Society of the Pacific . ... STScI News . Space Telescope Insitute Newsletter . ... Journal of Astronomical Data . ... Journal of High-Energy Physics (mirror in CERN ) [astro, grav, hi-energy .. ... Journal of Experimental and Theoretical Physics . ...

... The conference is organized by the Space Research Institute (IKI, Moscow), the Kazan Federal University (KFU), and the Academy of Sciences of the Republic of Tatarstan (ANT) . ... E. Churazov (IKI, MPA) . ... M. Gilfanov (IKI, MPA) . ... S. Sazonov (IKI), Deputy chair . R. Sunyaev (IKI), Chair . ... Co-chairs . ... Deputy chair: N. Sakhibullin (KFU) . ... First eROSITA International Conference: Mapping the Structure of the Energetic Universe 17-20 Oct 2011, Garmisch-Partenkirchen (Germany) . ...

Target Acquisition Reference Information . Figure 7.1 on page 88 shows mean predicted count rates as a function of (B - V) 0 color for the four acquisition mirrors. Also shown are the fits to the predicted count rates for different amounts of reddening. ... You can estimate target acquisition count rates using the plots instead of Table 7.1 on page 92 : . ... Read from the Figures (depending on the mirror used) the predicted count rate. ...

On April 14, 2000 UT a series of Shack-Hartmann measurements were made at varying altitudes. ... The tilts and sags shown are those given by the normal Shack-Hartmann analysis. ... Without this feedback, off-telescope tests showed positioning errors on the order of 10 arcseconds in the secondary mirror position. ... Tilt M2 Bk by X" . ... The coefficients m1 through m3 need to be added to those that are currently in the TCC to correct for the secondary translation with respect to the primary. ...

... Image Quality of the VLT . Total Optical Control . First light for the ESO VLT unit telescope 1 occurred during the workshop. ... The image shown (Figure 1 ) here was obtained with the VLT on May 16, 1998, in red light (R band), i.e. while the mirror was still uncoated. ... In this diagram (FIgure 2), the measured image quality of the VLT UT1 astronomical images is plotted versus the ``seeing", as measured by the Seeing Monitor, a small telescope also located on top of the Paranal Mountain. ...

Supernova 2008fv in NGC 3147 . This page is devoted to information on Supernova 2008fv in NGC 3147 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . ... We have images from 2008/09/23.9 showing no supernova, so we can farily easily pinpoint when this one started. This supernova is in the Constellation Draco . ... SNWeb has a 2008fv page . ... 2008/09/23.9 . ... Joel Nicolas . ... Jean Marie Llapasset . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Moon . ... Earth Satellites . ... By admin October 4, 2012 Posted in: Moon . A tiny second moon.This is Phobos (27 km across) seen over Mars by ESA's Mars Express (Image credit:ESA) . ... They concluded that at any given time Earth probably has a second moon. ... But, just perhaps, briefly the Earth had a second natural satellite seen by thousands of people.Remember the spectacular fireball witnessed over the UK and Ireland on 21 September 2012 ? ...

. The European Southern Observatory's Overwhelmingly Large Telescope (OWL) would consist of a 100-meter (330 foot) segmented mirror using adaptive optics. The telescope's protective enclosure has been retracted in this simulated view. ESO