... Jupiters Great Red Spot from Voyager 1 . ... Credit Copyright: NASA , JPL ; Digital processing: Bjфrn Jяnsson ( IAAA ) Explanation: What will become of Jupiter's Great Red Spot? ... A hurricane larger than Earth, the Great Red Spot has been raging at least as long as telescopes could see it. ... Publications with keywords: Jupiter - Great Red Spot . Publications with words: Jupiter - Great Red Spot . ... Jupiter and Venus from Earth . Jupiter in 2015 . Venus and Jupiter are Close . ...

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• West Of The Great Red Spot
• XWare > APOD

... Tonight's Sky . ... Observing . ... Sky this Month . ... Astronomy for Kids . ... Can you explain Mercury's retrograde motion? Do other planets appear to do this also? ... When astronomers talk about retrograde motion, generally they refer to the apparent motion outer planets make as Earth passes them while orbiting the Sun. ... 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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• Why do some stars appear to flash a variety of different colors when you look
• Why do the constellations and the Moon appear upside down from the Southern
• How were the constellation boundaries set? They appear pretty arbitrary. |

... Date: 5 June 2010 01:19:14 GMT+01:00 . ... Solarfest, IAA/UAS sostice event, NLCs. ... 12:00 - Tea/Coffee . ... 15:30 - Solar Imaging Workshop - Dave Gradwell (IFAS) . ... 20:00 - Evening Public Lecture - "The Power of the Sun" - Dr. David Williams (UCL, MSSL) . ... ТљТљТљ At 8pm, our Evening Public Lecture will be presented by Dr. David Williams of the Mullard Space Science Laboratory, University College London http://www.mssl.ucl.ac.uk/~drw/ who is flying over just for the event. ...

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• Planetary positions
• Armagh Observatory
• Terry Mosely's Bulletins

... 2014 May 18 . Jupiter's Great Red Spot from Voyager 1 . Image Credit: NASA , JPL ; Digital processing: BjЖrn JСnsson ( IAAA ) . Explanation: What will become of Jupiter's Great Red Spot? Recorded as shrinking since the 1930s, the rate of the Great Red Spot 's size appears to have accelerated just in the past few years. A hurricane larger than Earth, the Great Red Spot has been raging at least as long as telescopes could see it. ... Poll: Do you like APOD's leading question? ...

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• APOD: 2003 March 19 - Jupiter's Great Dark Spot
• APOD: 2000 December 12 - Jupiter Eyes Ganymede
• APOD: March 11, 1997 - Jupiter: The Great Yellow Spot

... 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. ...

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• Phil Plait's Bad Astronomy: Mad Science

Contents] [Prev page] [Next page] [Index] . Navigator 4 from Netscape, which is part of the Communicator product suite, includes three new areas of functionality that taken together give you Dynamic HTML. The three components of Dynamic HTML are style sheets, content positioning, and downloadable fonts. Used together, these three components give you greater control over the appearance, layout, and behavior of your web pages. ... Introducing Downloadable Fonts . ...

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On,off position switching is done to remove standing waves from the resulting spectra. ... 1,5,10,20,25,50,100 samples corresponding to great circle angular offsets of .004,.02,.04,.07,.09,.18, and .35 degrees. ... Page 1: rms vs great circle offset. ... Page 2: rms vs little circle offset. ... The rms increase correlates better with great rather than little circle offsets. the 1 usec standing wave starts to be seen in the .07 degree offsets. a .9 usec standing wave is seen at .35 degrees offset. ...

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• turretNotOnPos_nov15
• turret history
• The Pleiades

... Comet Tutorial . ... On July 1, 1993 an image was taken with the Hubble Space Telescope (HST) that clearly shows at least 15 individual fragments in one image frame of the train. ... This made an accurate orbit (or orbits) difficult to determine; however, after numerous observations of the comet, astronmers determined that the comet had passed within 96,000 kilometers (60,000 miles) of the center of Jupiter or 25,000 kilometers (16,000 miles) from the cloud tops during the July 8, 1992, approach. ...

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• Astronomy Picture of the Day
• Jupiter
• The Discovery and Early Study of Shoemaker-Levy 9

... Comet Tutorial . ... On July 1, 1993 an image was taken with the Hubble Space Telescope (HST) that clearly shows at least 15 individual fragments in one image frame of the train. ... This made an accurate orbit (or orbits) difficult to determine; however, after numerous observations of the comet, astronmers determined that the comet had passed within 96,000 kilometers (60,000 miles) of the center of Jupiter or 25,000 kilometers (16,000 miles) from the cloud tops during the July 8, 1992, approach. ...

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• Discovery of the Solar System
• Kepler and His Laws
• Jupiter

... HST . What is the offset in the U2 direction that can be taken before a gap appears? ... HST Peer Review Process . ... HST Overview . Overview . ... Retrieving HST Data . ... HST Science Year in Review . ... What is the offset in the U2 direction that can be taken before a gap appears in the coverage of the sky between the two pointings? ... Same question for a U3 offset. ... This should allow you to accurately address the issue of optimal offsets in the mosaic. ...

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• GOODS: The Great Observatories Origins Deep Survey
• HST this week: 189
• HST this week: 175

fitcircle - find mean position and pole of best-fit great [or small] circle to points on a sphere. fitcircle [ xyfile ] -L norm [ -H [ nrec ] ] [ -S ] [ -V ] [ -: ] [ -bi [ s ][ n ] ] fitcircle reads lon,lat [or lat,lon] values from the first two columns on standard input [or xyfile ]. ... Then two locations are found: the mean of the input positions, and the pole to the great circle which best fits the input positions. ... If no file is specified, fitcircle will read from standard input. ...

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• http://xray.sai.msu.ru/~polar/xmgr/view.html
• Physicists on the Money

Classroom Activity: Pinhole Protractor Gene Byrd and Renato Dupke . ... We cannot directly perceive the distances or sizes of far-away objects. Instead, our eyes only detect the angular size of objects. ... In Part II, which will appear in a future issue of The Universe in the Classroom, students will see how astronomers use parallax -- an extension of binocular vision -- to determine the distances of stars in the Sun's neighborhood. ... distance = 57.3 x physical size angular size (in degrees). ...

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• ASP: Mercury Magazine
• ASP: The Comet About to Smash into Jupiter
• ASP: Using Multicultural Dimensions to Teach Astronomy

Giant Jupiter. Jupiter . ... Jupiter has no solid surface that is why speaking about its dimensious point the radius of the upper border line of the clouds, where the presseru is about 10 KPa; radius of Jupiter on the equator is 71400 km. ... The Jupiter satellites. ... Nowadays 16 satellites of the Jupiter are known: Adrastea, Mitis, Amaltea , Phina,then 4 Galilei satellites: Io , Europe , Hanimed , Callisto , Leda, Aimalia, Zicitea, Elara, Ananke, Carme, Pasipe and Sinope. ... Jupiter's ring. ...

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• Galiliye
• earthe
• smalltelae

Astronotes Armagh Planetarium's Stellar Blog! ... Planets . ... Monthly Sky Notes . ... October . ... By admin October 8, 2010 Posted in: Monthly Sky Notes . A giant from close up: an image made using data from the Cassini probe which flew past Jupiter in 2000. ... As it is so far from us, it takes JupiterтАЩs light a significant time to reach us тАУso when you see Jupiter tonight you are seeing it as it was 35€а minutes in the past. ... Posted October 12, 2010 at 11:15 PM . ... Astronotes . ...

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• Stargazing in May | Astronotes
• Stargazing in November | Astronotes
• Stargazing in March | Astronotes

lsst.coordConv љ unknown . ... coordConv::Coord Class Reference . ... Coord (double equatAng, double polarAng, double parallax=0) . ... Definition at line 27 of file coord.h . ... Definition at line 227 of file coord.cc . ... Definition at line 150 of file coord.cc . ... Definition at line 134 of file coord.cc . ... Definition at line 142 of file coord.h . ... Definition at line 135 of file coord.h . ... Definition at line 141 of file coord.cc . ... Definition at line 172 of file coord.cc . ...

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• TUI:Telescope:Slew Window:Options:Drift Scan
• lsst.coordConv: coordConv::PVTCoord Class Reference
• TUI:Telescope:Offset Types

... Spherical aberration, coma, and astigmatism are also easily observed using the star test. ... Off-axis images are complex. ... Fig. ... Diffraction by a circular aperture as a function of defocus for no aberration Airy Disk 1 wave defocus Less than 1 wave defocus Fig. ... Diffraction by a circular aperture as a function of defocus for third-order spherical aberration Paraxial Focus Small distance inside paraxial focus Moderate distance from marginal focus Immediate neighborhood of marginal focus Fig...

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... Next: 7 kslice_3d: slicing data Up: Karma User Manual Previous: 5 Volume Rendering a . The <kpvslice> programme allows you to use a two-dimensional image to define a slice through a three-dimensional data cube. ... The slice is drawn on the total column density or velocity field map, and the corresponding position-velocity diagram will appear in the other window. ... To load the cube, press the Cubes button in the left window and select a cube file. ... The image is displayed in the left window. ...

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• A Blind HI Survey in the Great Attractor Region.
• Duchamp Source Finder
• WCSLIB: sph.h File Reference

Solar Eclipses Notice that both the Sun and the Moon appear in the sky to be about the same size: half of a degree. ... The Earth would cast a shadow on the Moon when they were all three lined up. When the Moon blocks the Sun, we call it a solar eclipse. The other eclipse is when the Sun-EarthMoon lineup is in effect, and the Earth blocks the Moon. ... Lunar eclipses, however, are easier to see, since the shadow of the Earth on the Moon is quite large. ...

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• The AstroStat Slog Blog Archive [ArXiv] The Importance of Being First: Position
• Select a circle around the central point source
• A Region mask for a radial profile in concentric, elliptical annuli

... PRIMESRC : The INDEX value (see column description below) of the prime source. E_EXPRn : There are n ( ) occurrences of this keyword, one for each EPIC source list added to the RGS list. ... E_mBNDn : Similar to the E_EXPRn keyword, but this records the value of either ID_BAND (in the input RGS source file, when filemode =`modify') or bandids , which is used to select the EPIC sources and to calculate the RATE value, transmitted into the output RGS source list. ... real32 . ... EPIC_FILE . ...

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• Housekeeping related keywords
• srcinfov: compute position of SouRCe in Field Of View

An introduction to the celestial sphere, describing its . apparent rotation and the special role of the pole star. ... This lesson plan supplements the web page listed below. Originally named "The sky above us" , it was split into two parts, each of which now has a lesson plan. ... Celestial sphere, constellation, zodiac, celestial pole, the Pole Star ("Polaris"), celestial equator, rotation of the Earth, planets [theodolite, equatorial axis]. ... What makes the Pole Star special? ...

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• Trigonometry beyond 90 degrees
• Magnetospheres other than Ours
• Discovery of the Solar System