We present new images of the reflection nebula surrounding the R Coronae Borealis Star, UW Centauri. ... Instead, the morphology of the nebula appears to change as different parts are illuminated by light from the central star that is modulated by shifting thick dust clouds near its surface. ... In this way, the central star acts like a lighthouse shining through holes in the dust clouds and lighting up different portions of the nebula. ... ADS Citation Query . citations = 21 . ...

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• Terrestrial Silicates Compared to Astronomical Silicates
• STScI Preprint #1211

... 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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Photon Scattering: Basic Principle of Photon Scattering . Audio Narration is available . No Scattering: Photon Source and Detector . ... For optical photons, scattering goes as wavelength to the -4 power. In the case of blue photons compared to red photons, this means that blue photons are about 10 times more likely to get scattered than red photons. ... Watch the blue photons scatter away from the detector . ... Interstellar dust make stars appear redder than they really are . ...

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... The Solar System from MESSENGER . ... The Sun's planets all appear as points of light, with the closest and largest planets appearing the brightest. Star Size Comparisons . ... To help illustrate the answer, a beautiful land, cloud, and skyscape was captured earlier this month over NeuchБtel, Switzerland. ... What's happened to these clouds? ... Spiral Galaxy NGC 2841 Close Up . ... Planetary Nebula Project . ... Inside the nebula lies an open cluster of bright young stars designated NGC 2244. ...

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... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The hill extends the scale model of the Solar system to the stars, nearby galaxies and vast structures in the distant Universe. ... On the scale of our model Solar System, Polaris would be 240,000 km from Armagh, nearly two thirds the distance to the Moon. ... On the scale of our model solar system, the Orion Nebula would lie at the distance of the Moon from Armagh. ...

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• Mystery Flare | International Year of Astronomy in Ireland | Astronomy 2009
• Geminid Meteors
• Armagh Observatory

... We have measured this "redshift" for the pink black holes, and allowed for it in our calculations. ... We see this effect in the emission from gas around these pink black holes, but it is far too small an effect to account for the pinkness. Thus the swirling motions of gas around or into the black holes cannot produc the colour. ... At first we thought that these things were normal blue black holes hidden behind clouds of interstellar dust, that absorbed the blue light and made them appear pink. ...

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... November 22, 1996 . Fliers Around the Blue Snowball Nebula . ... But now yet another mystery has come to light: what created the fast-moving gas clouds that appear around planetary nebula ? Dubbed FLIERs for Fast Low-Ionization Emission Regions, these knots of dense gas appear to have been ejected from the central star before it cast of the planetary nebula. ... In the above false-color picture of NGC 7662, the Blue Snowball Planetary Nebula , the FLIERs are featured in the image inserts. ...

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• Orion Nebula
• Helix Nebula
• APOD: August 28, 1996 - NGC 5882: A Small Planetary Nebula

. Album : Фотоальбом Сергея Аюкова :: Travels to distant places and countries :: 1997/08 Japan (Kyoto, Nara) :: 17/08 Kyoto streets. Maruyama park . Up . << Prev . Dreaming about things on display. After checking, they appeared to be not that tasty compared to how they look. Next >> . Created with the tool album generator from David's MarginalHacks on Wed Jun 5 20:38:34 2013 .

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• Day One. Streets of Kyoto, Maruyama park, KICH: page 10

The Very Large Telescope Interferometer (VLTI) at ESO s Paranal Observatory in Chile has obtained the sharpest view ever of the dusty disk around the close pair of aging stars IRAS 08544-4431. For the first time, such disks can be compared to the disks around young stars and they look surprisingly similar. ... The inset shows the VLTI reconstructed image, with the brighter central star removed. The background view shows the surroundings of this star in the constellation Vela the Sails. ...

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• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BB42005DF-EAF2-4359-9A0D-D9987CE5310A%7D
• What are typical star-to-star distances in globular clusters compared to
• Why do the constellations and the Moon appear upside down from the Southern

.

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• Around the Cat's Paw Nebula | ESO
• ESO - The reduced science spectrum displayed in the Reflex window appears good
• Snow line distance compared to the Solar System | ESO Ireland

http://hea-www.harvard.edu/AstroStat/slog/2009/ mads - mahalanobis - distance / Weaving together Astronomy+Statistics+Computer Science+Engineering+Intrumentation, far beyond the growing borders Fri, 01 Jun 2012 18:47:52 +0000 hourly 1 http://wordpress.org/?v=3.4 http://hea-www.harvard.edu/AstroStat/slog/2009/ mads - mahalanobis - distance /comment-page-1/#comment-869 ... Comment preview, last we checked, completely messes up the spam filter (not that the filter is all that well behaved now ? ...

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• Select a circle around the central point source
• The SAOimage Menu (options within SAOimage)

... 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. ...

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• ASP: A Flag for Mars
• ASP: Biography of a Star: Our Sun's Birth, Life, and Death
• ASP: Using Multicultural Dimensions to Teach Astronomy

... Here some data observed on the 6m telescope with IFP installed in the OLD focal reducer are presented. ... Mkn 3: velocity field . ... NGC 5252: [OIII] image . ... NGC 5252 was observed 23 Feb. 1998 in the [OIII]5007 emission line with CCD TK1024 as detector. ... We observed the ionized gas velocity fields of the spiral galaxies with two purpose. ... Restored velocity field of NGC 157 in the reference frame rotating with the pattern speed overlaid on the Ha image of the galaxy . ... NGC 4100 . ...

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... The sample of the Local Volume galaxies (distance smaller than 10 Mpc) gives a unique opportunity to study the properties of galaxies including the weakest objects: the absolute magnitude M B -10 and the virial mass M vir 10 9 M x263C;. ... Luminosity function of the Local Volume galaxies. ... The luminosity functions for galaxies are presented: red dashed line - from the 2dFGRS survey (Norberg et al. 2002); blue dash-dotted line - from the SDSS survey (Blanton et al. ...

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... The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is a conspicuous object in the night sky with a prominent place in ancient mythology . ... The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years ) away. ... Data for these stars are listed in a table below. ... Yes . ... WEBDA Pleiades cluster data . ... M45: The Pleiades Star Cluster (2007 November 18) ...

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• The Tarantula Nebula
• Thesis Figures
• First Galfa H I Map

... Section M-7 describes the basic problem of trigonometry (drawing on the left): finding the distance to some far-away point C, given the directions at which C appears from the two ends of a measured baseline AB. ... That means that the angle ? ... 2? r covers an angle 360њ . ... Suppose you want to estimate the distance to some distant landmark--e.g. a building, tree or water tower. ... Alpha Centauri, the sun-like star nearest to our solar system, has a distance of 4.3 years and a parallax of 0.75"....

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• Estimating the Moon's Distance
• Added Note on "Profile" Orbit
• May Earth be Revolving around the Sun?--lesson plan #16

... STScI-PRC96-07 and JPL-P-46535 HUBBLE FINDS AN HOURGLASS NEBULA AROUND A DYING STAR This is an image of MyCn18, a young planetary nebula located about 8,000 light-years away, taken with the Wide Field and Planetary Camera 2 (WFPC2) aboard NASA's Hubble Space Telescope (HST). ... CREDITS: Raghvendra Sahai and John Trauger (JPL), the WFPC2 science team, and NASA Image files in GIF and JPEG format and captions may be accessed on Internet via anonymous ftp from oposite.stsci.edu in /pubinfo. ...

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• Educator's Guide to Robotic Spacecraft
• A collection of images
• A Search for Clustering around Herbig Ae/Be Stars

Changes SciSim v2.0.3 . SciSim v2.0.3 is a bug fix release of SciSim and contains only minor changes compared to v2.0.2. The input (configuration & data) files, as well as the ODF products are compatible with previous versions. ... EDUID is currently coupled to ccd id. ... Iterpretation of Quadrant and CCD numbering has changed (see also the ESIM documentation in the SciSim User Guide). ... The following README files specify the changes in the data-files and in the configuration file: . ...

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• isNearlyEqual(): Comparing numbers with a given precision
• Description

The Sun is our nearest star and the source of energy for life on Earth. ... For centuries astronomers wondered whether they were clouds floating in the Sun's atmosphere, but we now know that they really are huge regions of magnetic field, about as intense as the field at the poles of an iron magnet. ... Such abrupt events were named solar flares , and what made them especially interesting was that occasionally, after a prominent flare, a magnetic storm would erupt on Earth. ...

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• Auroral Images
• Newton's theory of "Universal Gravitation"
• The Sun's Corona

Astronotes Armagh Planetarium's Stellar Blog! ... Milky Way . Stars . ... July . ... The area rising from the teapotтАЩs spout in Sagittarius is the centre of the Milky Way and scientists believe a supermassive black hole is hiding here, but no need to panic as it is too far away to cause us any wrinkles of worry!But this view of the Milky Way has multiple fantastic treats for us to behold, but binoculars or small telescopes will be need to enjoy them.Around the centre of the Milky ...

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• Why is this nebula so shocking pink? | Astronotes
• What are the Largest Stars in the Universe? | Astronotes