... A Laser Strike at the Galactic Center . ... Constant imaging of high-altitude atoms excited by the laser -- which appear like an artificial star -- allow astronomers to instantly measure atmospheric blurring . ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: laser - adaptive optics - Galactic Center . Publications with words: laser - adaptive optics - Galactic Center . ... Sgr A*: Fast Stars Near the Galactic Center . ... Neptune through Adaptive Optics . ...

... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

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 Unit Telescopes Overview - This page is outdated, an update is in process.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 Secondary mirror (M2 Unit) - This page is outdated, an update is in process.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 Coating Unit - This page is outdated, an update is in process.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

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2009 January 4 . Breaking Distant Light . ... Explanation: In the distant universe, time appears to run slowly. ... Above , the light from distant galaxies has been broken up into its constituent colors ( spectra ), allowing astronomers to measure the redshift of known spectral lines . ... About APOD | ... A service of: ASD at NASA / GSFC . ...

... SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . ... Accidental Astrophysics: The Devil's In the Magnitudes, Part II . ... The star second to the Sun in brilliance is Sirius. ... Recall the magnitude system, passed down to us through a hundred generations of sky watchers, as a means of quantifying stellar brightness ("Accidental Astrophysics," May/June, p. 9). ... Yes, it is a magnitude difference, but that difference is due to the distance between us and the star. ...

... self-absorption - the absorption of light shining on an object by a process similar to that which produced the light originally; if a cloud emits less light than it absorbs from other clouds behind it, this net loss of light, termed self-absorption , causes the foreground cloud to appear darker than the background field (the term is from spectroscopy, where small absorption dips sometimes occur in larger emission lines, making the latter look as if it is absorbing part of itself) . ... HISA Main ...

INAF staff researcher at the Osservatorio Astrofisico di Arcetri in the Adaptive Optics Group. ... INAF - Osservatorio di Arcetri . ... pinna@arcetri.astro.it . ... Since 2004 I'm involved in the development of high order Adaptive Optics systems for ground based telescopes. ... Magellan Adaptive Optics system (collaboration with the Steward Observatory - USA) . ... The Giant Magellan Telescope adaptive optics program. ... MagAO: Status and on-sky performance of the Magellan adaptive optics system. ...

EMBARGOED UNTIL: 9:20 AM CST, January 6, 1999 CONTACT: John Biretta Space Telecsope Science Institute, Baltimore, MD (Phone: (410) 338-4917; Internet: biretta@stsci.edu) HUBBLE DETECTS FASTER-THAN-LIGHT MOTION IN GALAXY M87 Astronomers reported today discovering clouds which appear to move many times faster than the speed of light, shooting out from the region of a black hole at the center of the M87 galaxy. ... It's an illusion created by the finite speed of light and rapid motion," Biretta said. ...

... GSAOI Home . ... Picture Gallery . ... NIFS Cryostat and integration frame, as GSAOI will appear . NIFS cryostat, as GSAOI will appear . Cryostat in integration frame . Optical layout . ... Mechanical layout . ... Input beam splitter . ... Instrument integration ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... This shows the Sun, Moon and Earth (not to scale) together with the . ... They have tested the technique on the Earthshine, the light reflected from the Earth by the Moon, and showed that it can reveal the presence of life in our planet. ... This technique uses the fact that the light reflected from the planet is polarised, whereas that emitted by the star is not. ... Polarised light can tell us about the reflecting surface...

... Circumstellar disc of beta Pictoris: constraints on grain properties from polarization. To appear in the Astronomy & Astrophysics . abs , src , ps ] . ... Dust influx to Titan from Hyperion . ... abs ] . ... Characteristics of bulges and disks in interacting galaxies . ... Dust grains around Herbig Ae/Be stars: porous, cometary-like grains? ... To appear in the Astronomy & Astrophysics Supplement . ... Finally, Links may lead you to more options (e.g. via the LANL preprint system). ...

... Search . Email & phone search . ... Astrophysics Group . ... Optical Interferometry . Optical Interferometry Team Publications . Adaptive Optics Publications . ... SPIE 2000 Papers . SPIE 2002 Papers . SPIE 2004 Papers . SPIE 2006 Papers . SPIE 2008 Papers . SPIE 2010 Papers . SPIE 2012 Papers . Optical Interferometry Publications . ... Lucky Imaging Publications . ... 2013, Astrophysics Group, Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE . ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . ... Information & tools for observers . ... Digital systems . ... What is Adaptive Optics? ... Adaptive optics systems operate at high frequencies, typically about 1000 Hz. ... Australia is an active participant in the development of adaptive optic systems through the Research Network for Adaptive Optics . ... What are some advantages in using an adaptive optics system on a telescope? ...

An image of the grand design of spiral galaxy M100 obtained with NASA's Hubble Space Telescope resolves individual stars within the majestic spiral arms. ... Hubble has the ability to resolve individual stars in other galaxies and measure accurately the light from very faint stars. This makes space telescope invaluable for identifying a rare class of pulsating stars, called Cepheid Variable stars embedded within M100's spiral arms. ... 617) 495-7062 . Fax: (617) 495-7356 . ...

... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...

November 2006 Astronotes 1 Candles in the Dark Image Credit: Wikipedia.org By Colin Johnston, Science Communicator Since the mid-ninteenth century astronomers have used the principle of parallax to measure the distance to other stars. ... How then can we tell, for example, that M31, the galaxy in Andromeda, is 2.2 million light years away? It would be straight-forward to tell how far away a star was if it was exactly the same brightness as our own Sun. ...

... 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 . ...

. A bipolar nebula in M17 is home to the largest and most massive circumstellar disk yet known. White contours delineate the densest part of the disk. Visible stars appear slightly elongated due to the adaptive optics technique used. They are embedded within the M17 molecular cloud but are probably unrelated to the disk. The inset (bottom right) shows the central object, which measures 450 x 240 AU. M17 is 7,000 light-years away. ESO

... 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. ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... 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. ... Power Supplies and Adapters . ... Meade #607 DC Power Cord w/Cigarette Lighter Adapter . ... Meade #607 DC Power Cord w/Cigarette Lighter Adapter #07043. Lets you power most Meade models from a car cigarette lighter style power socket. ...