... 2009 July 30 . 6 Minutes 42 Seconds . ... Explanation: The July 22nd total solar eclipse was the longest of the 21st century . From the point of maximum eclipse along the Moon's shadow track across the Pacific Ocean, the Moon completely blocked the Sun for a total of 6 minutes and 39 seconds. But from the deck of this cruise ship the duration of the total eclipse phase was extended to a whopping 6 minutes and 42 seconds by the ship's motion along the shadow track. ... About APOD | ...

... Credit: Mike Simmons ( Astronomers Without Borders , TWAN ) Explanation: Contrary to the famous myth , you can't see the Great Wall of China from the Moon ... even during a total solar eclipse . But on August 1 you could see the Moon eclipsing the Sun from the Great Wall. In fact, from this location near the Great Wall's western end, the Moon completely blocked the Sun's overwhelming disk revealing a shimmering solar corona and bright planets in the briefly darkened sky. ... August Moons . ...

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

Filename completion is only available if the the environment variables EDITOR and/or VISUAL are set to either emacs , gmacs or vi . For example: EDITOR=emacs . ... To complete a file or directory name with emacs or gmacs set press the ESC key twice. ls -l on<ESC><ESC> line_help . If the filename is not completed enter more characters until the filename can be uniquely identified. ... To complete a file or directory name with vi set press the \ (backward slash) key. ls -l on\ line_help . ...

Armagh Observatory, 17 January 2000 . Sky watchers will be treated to the first total lunar eclipse of the year on the morning of Friday, 21st January, weather permitting. A total lunar eclipse occurs when the Moon completely enters the dark shadow cast by the Earth. ... The most spectacular part of the eclipse, the total phase, lasts from 4:04 a.m. until 5:23 a.m. when the whole Moon is within the Earth's dark (umbral) shadow. ... Last Revised: 18th January 2000 . ...

Next: Accretion Disks with Up: StarsStellar Populations, Previous: Spectroscopic Analysis of . ... We present and discuss spatially resolved spectra of the accretion disk and the gas stream region as a function of distance from disk center, the spectrum of the uneclipsed light, and the radial temperature distribution in the ultraviolet. Keywords: Accretion disks, Cataclysmic variables . ... In this paper we report on the HST spectral mapping of the nova-like UX UMa. ...

... On the morning of Thursday, 26 February, amid the Gal pagos Islands, the Sun will fade from view. Not the culmination of ancient prophecy, but none less mystical, Earth's small Moon will be executing a slow slide past the enormous Sun. ... And anyone living in southern North America, Central America, northern South America, or on islands and cruise ships in the Caribbean Sea will, weather permitting, have the opportunity to experience the wonder of a solar eclipse. ...

... We present a computer program for modelling energy flux distribution and light curves of eclipsing binaries from far ultraviolet to infrared regions. The Roche model is assumed. Proximity effects of components (reflection of radiation and surface gravity darkening) are taken into account. ... Figure 1: The surface temperature distribution for Algol A-B system before (upper plot) and after (lower plot) correction for temperature due to the irradiation effect. ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Submit a letter to the editor . ... Astronomy Letters . ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... LWN.net Weekly Edition for March 18, 2004 . ... LWN.net FAQ . ... This article is part of the LWN Porting Drivers to 2.6 series . Completions are a simple synchronization mechanism that is preferable to sleeping and waking up in some situations. ... When your driver begins some process whose completion must be waited for, it's simply a matter of passing your completion event to wait_for_completion() : . ... void complete(struct completion *comp); void complete_all(struct completion *comp); . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. August 18, 1999 . Sun Block . ... Explanation: During a total solar eclipse, Earth's moon blocks the sun - almost exactly. While the sun is about 400 times wider than the moon, it is also about 400 times farther away and each appears to be half a degree or so in diameter. ... Tomorrow's picture: Light From The Dark Sun . ... About APOD > . ...

... Solar Eclipses in 2009 : . There are two eclipses of the Sun (an annular eclipse on January 26 and a total eclipse on July 21-22 ) in 2009. ... Annular Solar Eclipse . ... Annular Eclipse of the Sun on January 26, 2009 . ... Beginning of northern limit of umbra . ... Beginning of center line; central eclipse begins . ... Central eclipse at local apparent noon . ... Total solar eclipse . ... An annular eclipse occurs when the apparent disk of the Moon is smaller than that of the Sun. ... Umbra: . ...

The Sun's corona . ... For instance, short "plumes" rising from the polar regions of the Sun look very much like field lines coming out of the end of a bar magnet, and they therefore suggest that the Sun, in addition to the intense fields of sunspots, also has a global magnetic field like the Earth's. Arches above the . Sun's surface . ... It is brightest near sunspots, whose arched field lines apparently hamper the outflow of solar wind which carries away energy and helps cool the corona. ...

The Astronomy Shop . ... AstroGuide | ... Books | The Under-Standing of Eclipses - A Complete Reference . ... Guy Ottewell answersthe What, Where, When, and How in layman's language and diagrams. ... Diagrams of solar eclipses through 2009. ... This is the best reference on the mathematicsbehind eclipses I've read. ... www.astronomy.net . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Astrophysics graduate student programs . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

... Twenty Years in Space: The Hubble Space Telescope’s Greatest Achievements . Robert Naeye, Editor in Chief of Sky Telescope magazine . ... Join ATMoB member and Sky Telescope editor Robert Naeye as he describes some of Hubble’s most significant contributions to human understanding of our amazing universe. ATMoB member Robert Naeye is Editor in Chief of Sky Telescope, the world’s most respected and influential popular astronomy magazine. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

This section describes the calculation by which Aristarchus used the duration of a total lunar eclipse to deduce the distance of the Moon. ... This lesson plan supplements: "How Distant is the Moon--1", section #8c: on disk Shipprc2.htm , on the web . ... The shadow of the Earth at the Moon's distance is narrower than the Earth, because the Sun is seen not as a point but as a disk 0.5 degrees wide. ... An eclipse of the Moon is the passage of the Moon through the shadow of the Earth. ...

... The commands in the internal command buffer may also be edited. On Unix systems MIDAS comes (since the 94NOV release) with two different line-editors: TermWindows (the one developed at ESO) and readline (which is from the GNU project). ... To edit a MIDAS command, type the command number preceded by a dot (period) or followed by a dot. ... So if you repeat or edit a certain command via its MIDAS command--number at least once in 15 command inputs, this command will always be kept in the buffer. ...

... Class . ... PREV CLASS NEXT CLASS . FRAMES NO FRAMES All Classes . ... FIELD | CONSTR | METHOD . DETAIL: FIELD | ... java.lang.Object ij.plugin.LUT_Editor . ... public class LUT_Editor . ... This method is called when the plugin is loaded. Methods inherited from class java.lang.Object . ... Constructor Detail public LUT_Editor () . ... This method is called when the plugin is loaded. 'arg', which may be blank, is the argument specified for this plugin in IJ_Props.txt. ...

... Science . ... Science Users Information > Science Publications > Science Announcements > Completion of ALMA Early Science Cycle 1 and start of Cycle 2 . ... Observing Facilities . ... ALMA . ... The ALMA Cycle 1 Early Science observing season ended in May 2014. ... Cycle 2 science observations started on the 3 June 2014 and will extend until October 2015 with two pauses: SeptemberтАУNovember 2014 (commissioning of long baselines) and FebruaryтАУMarch 2015 (annual engineering and computing activities...