... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Bright planets meet at dusk . ... Astronomy magazine subscribers can read the full article for free. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

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... ESO, the European Southern Observatory . ... Images . ... These are the first images of both of the jets in the giant galaxy Messier 87. They were obtained with the 2.5 metre Nordic Optical Telescope at La Palma, Canarian Islands, Spain under near-perfect conditions. ... The main jet which has been known since long is seen on the right-hand side, while the newly discovered arc-like structure which represents the end of the counter-jet is visible at the extreme left (indicated by a vertical arrow). ...

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• Visible and infrared views of giant, cannibal galaxy Centaurus A | ESO

... 2014 December 9 . The Flame Nebula in Visible and Infrared . ... Explanation: What lights up the Flame Nebula? Fifteen hundred light years away towards the constellation of Orion lies a nebula which, from its glow and dark dust lanes, appears, on the left, like a billowing fire. ... The above false-color picture of the Flame Nebula (NGC 2024) was taken is a composite of both visible and infrared light , the later energy band being where a young star cluster becomes visible . ... About APOD | ...

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• APOD: 2014 December 13 - The Infrared Visible Andromeda
• APOD: July 13, 1997 - Vela Supernova Remnant in Optical
• APOD: 2010 June 7 - Comet McNaught Becoming Visible to the Unaided Eye

... The Flame Nebula in Visible and Infrared . ... Fifteen hundred light years away towards the constellation of Orion lies a nebula which, from its glow and dark dust lanes, appears, on the left, like a billowing fire. ... Rather the bright star Alnitak , the easternmost star in the Belt of Orion visible just to the right of the nebula, shines energetic light into the Flame that knocks electrons away from the great clouds of hydrogen gas that reside there. ... Dust of the Orion Nebula . ...

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• Астронет > The Flame Nebula in Visible and Infrared
• Vela Supernova Remnant in Optical
• Vela Supernova Remnant in Visible Light

... Astrophysics Group . ... Optical Interferometry . OIFITS: A Data Exchange Standard for Optical (Visible/IR) Interferometry . ... OIFITS is a standard for exchanging calibrated, time-averaged data from astronomical optical interferometers , based on the FITS Standard (OIFITS is a registered FITS convention ). ... The OIFITS standard is used in the biennial optical interferometry Imaging Beauty Contests: . ... A data exchange standard for optical (visible/IR) interferometry. ...

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• Astrophysics Group Optical Interferometry
• G184.6-5.8
• Astrophysics Group SPIE 2002 Papers

... DP = dirty picture Dust specks or dirt are evident on the finding chart. ... Identifications Within 2 Arcmin of Known Clusters of Galaxies The letter preceding the cluster catalog number: a = Abell Cluster z = Zwicky Cluster The notations following the catalog number: cc = at cluster center nc = not at cluster center mc = near cluster center ni = not identified with probable cluster member c: = cluster not obvious on finding chart ef = identification is EF (empty ...

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• Telescope optics
• Optically detected galaxies with POSSI-E in the "zone of avoidance. I-V
• SS433

Next: CCD Scientific Performance Up: CCD Operation Previous: CCD Operation . A visible light photon releases only one electron-hole pair, and consequently many photons must be collected in each pixel for a measurable signal to be produced. ... This use as an imaging X-ray spectrometer requires that no more than one photon is incident on each pixel in any image frame, which imposes a requirement that image collection times be limited to ~seconds for typical astronomical applications. ...

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• Optical loading
• User-visible functionality

... Бренд: Arte Lamp (Италия) . Коллекция: Invisible . ... Цвет арматуры: белый . ... title='Gien Toscana Сахарница 0,35 л - Gien' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> . ... Цвет: серый,черный . ... Цвет: Зеленый . ... Цвет: белый . ... Подвесная люстра Arte Lamp - Arte Lamp - Arte Lamp . Портмоне мужское Malgrado, цвет: коричневый. ...

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. B?rbel Koribalski (ATNF) . Baerbel.Koribalski @ csiro.au

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• NGC 2915: The Darkest Spiral Galaxy
• The Grus-Quartet
• ATNF Daily Astronomy Picture

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

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From: TerryMosel@aol.com Date: Tue, 18 Mar 2003 02:25:55 EST Subject: N.E. Sunspot, Lecture, Comet, Columbia Hi all, The Sunspot maximum may be over, but there have been a few giant sunspots lately! The latest one is also visible to the unaided eye. ... Finally, I have just received the following email from Leo Enright about the Columbia investiagtion. ... I didn't see it because I'm in Houston for a series of public hearings of the Columbia Accident Investigation Board. ...

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• ISS and ATV visible from Ireland in Evening Skies | International Year of
• Solar Eclipse 2008 August 1st
• Armagh Observatory

... 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 La com†иte Hartley 2 visible †а lтАЩЉУil nu ! ... Profitez des conditions id†йales de ce week-end pour observer la com†иte Hartley 2. ... Elle n'a pas encore d†йploy†й de queue ( voir quelques clich†йs de la com†иte sur Ciel & Espace Photos ). ...

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• Images de la com†иte Tempel 1 : le crat†иre de Deep Impact invisible | Ciel et
• La temp†кte g†йante de Saturne (visible depuis d†йcembre 2010) | Ciel et Espace
• Un jet de particules de 37 ann†йes-lumi†иre dans la Car†иne | Ciel et Espace

... In this optical CCD frame, taken at Lick Observatory, the dark spots are clearly visible. In fact, these should now be visible through a 4-inch telescope with good image scale and atmospheric conditions. ... HST comparison of Violet and Ultraviolet Images of Dark Holes . ... The contrast is best in the longest wavelength image as Jupiter is fairly dark there due to upper atmospheric absorption by methane. ... True Color IR image (jpeg format) . ... I will post some of those images here. ...

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• Astro-2 and the UIT Experiment
• Astronomy HyperText Book: Interstellar Medium
• Lecture IV.

The HyperNews Linux KHG Discussion Pages . Forum: The Linux Kernel Hackers' Guide . Date: Mon, 02 Feb 1998 13:00:01 GMT . ... I am working on the design of ISA board for a PC. It has 96 Kb of ROM with addresses between C800:0 and D000:FFFF. The board works ok in a pentium 75 but it does not work in more recent systems. The reason is that the segment D000 is not visible. Does anibody know what is going on and how to solve it ? Thanks in advance. ...

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• APOD: July 15, 1998 - Ghost Galaxy NGC 2915
• TRASP 5
• Home page Mauro Focardi

... HST . Achieving 10 -6 Contrast Visible Light Coronagraphy with BAR5 . ... Data . ... HST Overview . Overview . ... Phase I Proposing . ... Retrieving HST Data . ... These results demonstrate that high contrast imaging with STIS/BAR5 can achieve contrasts within a factor of 2 of the photon limit due to the wings of STIS?s point source function. More information on the details of these results are located at http://www.stsci.edu/hst/stis/strategies/pushing/coronagraphy_bar5 Copyright | ...

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• ACS Instrument Handbook
• ACS Instrument Handbook for Cycle 20
• Space Telescope Imaging Spectrograph Instrument Handbook

NATURE|Vol 450|15 November 2007 NEW S D. VAN RAVENSWAAY/SPL WHAT TO DO WITH A WORMHOLE OPTICAL CABLES: the wormhole could act as a perfect optical fibre that is invisible from the outside -- but only at a single wavelength, the one the tube is designed to carry. OPTICAL COMPUTERS: dataprocessing elements for conducting logical operations on light signals could be placed inside the wormhole, so that all one would see of the computer is input and output sockets. ... Science 314, 977­980 (2006). ...

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• Diffuse Galactic Light in the Large Magellanic Cloud
• The Large Magellanic Cloud
• Solar System Studies at AO

... Survey processing . ... ESO - Public Surveys . ... 21/12/2009 Release of Science Verification Data . ... 11/12/2009 Press release about VISTA (Text, Images and Videos) . The ESO press release is at www.eso.org/public/outreach/press-rel/pr-2009/pr-49-09.html . ... 10/12/2009 15:00+ Ownerhsip of VISTA accepted by ESO from STFC (UK Goverenment representative) . ... 15/10/2009 Science Verification period started (see 21/12/9 for release) . ... 17/04/2008 Press releases om M1 from ESO , STFC and QMUL . ...

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• Publications about VISTA

home publications > mercury . ... Publications of the ASP (PASP) . ... Exploring Invisible Skies . ... One of the tools these students are using?a radio telescope?explores an invisible part of the electromagnetic spectrum, radio waves. ... From listening to music on the radio to talking on our cell phones, radio waves are the means used to get information across large distances. ... Radio waves also give us information about the Universe complementing information obtained at other wavelengths. ...

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• ASP: Mercury Magazine
• ASP: Hawaii: Transit of Venus
• ASP: Mercury Spring 2011

... Orbiter . Payload of the Orbiter . ... the instruments . ... ORBITER . Index . Instrument . Mass (kg) . ARGUS . ... visible and IR mapping spectrometer . ... planetary IR Fourier spectrometer . ... mapping visible and thermal radiometer . ... mapping high-resolut. spectrophotometer . ... multichannel optical s spectrometer . ... quadrupole mass-spectrometer . ... fast omnidir. energy-mass ion analyzer . ... wave complex . ... platform for ARGUS instruments . ... MASS-MEM . ...

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• OFO IKI / OSD
• The Io Dynamo
• Satellites d'observation du Soleil et des Cieux

Next: The ``Reflection'' Effect Up: Ejectors in Massive Binary Previous: The Radiopulsar PSRB1259-63 - a . The radiopulsar PSRB1259-63 in a massive binary has an extremely high eccentricity (Johnston et al. ... We have assumed that explosion occurs at a random moment on the orbit and all the mass thrown off by a star instantly leaves the system because the characteristic velocity of matter from the exploded star is much higher than the orbital velocity. ...

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