Have you ever heard the name of a star or constellation and wondered what it meant? ... I've compiled a table of commonly known star names and their definitions in the Western tradition, grouped by constellation. ... Following each constellation entry are any named stars found therein (in order from brightest to faintest), listing the Bayer (Greek letter) or other common designation, the star name, and English translation. ... Some other sites with star name information: . ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Colin Johnston . ... Milky Way . Stars . ... Monthly Sky Notes . ... June . ... This red supergiant is the brightest star in the constellation Scorpius and is of awesome size. ... Returning to Vega (which will be the pole star in about 12 000 years from now), follow an imaginary line between it and Arcturus, this line will cross two more constellations, faint and sprawling Hercules and that celestial smile Corona Borealis. ...

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• Leo, Virgo, Bootes and the May Night Sky Wonders | Astronotes
• Orion, mighty hunter of the winter sky | Astronotes
• December Night Sky Wonders | Astronotes

The scorpion. This constellation lays between the Marksman and the Scales in the Milky way. The Godness hunter Artemida sent a scorpion to kill Orion. Arat writes: "When the Scorpion rises in the East, Orion makes hust to disappear in the West". The Sun comes into Orion constellation in 22th of November when it passes to nonzodiac constellation Snakecarrier on 20 days. ... Antares of Scorpion means in Greek a rival of Ares (of Mars). This bright star really looks like Mars. ...

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• devae
• orione
• lebede

... Stars and Planets in the Halo of the Moon . ... Credit: Lauri Kangas Explanation: Photographed on March 13th from Caledon, Ontario, Canada, a bright Moon was surrounded by this lovely halo. ... Castor and Pollux, twins in Greek Mythology, are appropriately bright stars of the constellation Gemini while Procyon is the brightest star in Canis Minor . ... March . ... March 2003 . ... Publications with keywords: Moon - halo - Gemini - Jupiter . Publications with words: Moon - halo - Gemini - Jupiter . ...

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• Journal "Peremennye Zvezdy"
• XWare > APOD

The parameter brief (with its actual uncertainty sbrief) is the mean effective surface brightness in B-band , i.e. the mean surface brightness inside the effective aperture (the circular aperture enclosing one-half the total flux). It is expressed in mag arcsec -2 . ... 2) from the mean surface brightness "LV" inside the effective isophote (elliptical isophote enclosing one half the total flux) measured by Launberts&Valentijn (1989) . ... Effective radius . ... HyperLeda . ...

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• HyperLEDA documentation: compilation of surface brightness (a105)
• LEDA data base
• Mean astrophysical parameters from LEDA

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

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... To make it easier to "read" this celestial calendar, they grouped the brighter stars into readily recognizable shapes, the constellations. ... From Star Maps , [AS 289] a constellation slide set, available from the ASP . Our modern constellation system comes to us from the ancient Greeks. ... The ancient Greek tradition was to name stars by their position within a constellation. ... And it explains why we have a system of Greek constellations with Latin names containing stars with Arabic names. ...

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• ASP: Miranda: A Jigsaw Puzzle World
• ASP: Star Science in the Autumn Sky
• ASP: Black Holes to Blackboards: In the Seventh House of Saturn

Today's APOD | ... Editor's choices for the most educational Astronomy Pictures of the Day about individual stars: . APOD: 2000 June 11 - Sirius: The Brightest Star in the Night . Explanation: Sirius is the brightest star in the night sky. ... As Sirius is 8.7 light years distant, it is not the closest star system - the Alpha Centauri system holds this distinction. ... APOD: 2005 December 4 - Proxima Centauri: The Closest Star . ... APOD: 1999 October 6 - Polaris: The North Star . ... Index | ...

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• APOD: 2002 June 20 - Bright Galaxy M81
• APOD: 2000 May 23 - M4: The Closest Known Globular Cluster
• APOD: 2000 June 11 - Sirius: The Brightest Star in the Night

You Can Make Stellar Images Brighter . Articles | ... A few months ago I wrote an article titled "You Can’t Make Them Brighter". So why am I now writing that you can make them brighter. ... The image of a focused star is actually a small disk called the Airy disk, named after the 19 th century scientist Sir George Airy. ... For a given aperture, a smaller Airy disk means that the light is focused to a smaller disk and is therefore brighter. ... www.astronomy.net . About Astronomy Net | ...

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• Brightest Northern Hemisphere Galaxy - an Astronomy Net Education Forum Message
• Polar Alignment Using The Star Drift Method - an Astronomy Net Article
• Summer Triangle - an Astronomy Net Article

... The spherical aberration affecting the HST primary mirror (Burrows et al. 1992) can seriously alter the core brightness profile of elliptical galaxies. ... In this paper we test the performance of deconvolution in recovering the original surface brightness profile in the case of elliptical galaxies observed with the HST Planetary Camera (PC). ... Keywords: Elliptical Galaxies, Deconvolution . ...

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• Ferrarese Ford: Surface Brightness Parameters from Deconvolved Images
• NICMOS Data Handbook
• Surface Brightness of Background Light

The night sky brightness, together with number of clear nights, seeing, transparency, photometric stability and humidity, are some of the most important parameters that qualify a site for front-line ground--based astronomy. ... Night sky at ESO-Paranal (Chile). ... Night sky brightness data . ... UBVRI night sky brightness at ESO-Paranal during sunspot maximum (A 2003, PDF) . ... The Dancing Sky: six years of night sky observations at Cerro Paranal (Starlight 2007 conference proceedings, PDF) . ...

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• The bright star clusters Messier 47 and Messier 46 in the constellation of
• The bright star Fomalhaut in the constellation of Piscis Austrinus
• The location of the bright star cluster NGC 3532 in the constellation of Carina

The nasa.gov site requires that JavaScripts be enabled in your browser. ... Contact NASA . ... The term "astronaut" derives from the Greek words meaning "space sailor," and refers to all who have been launched as crew members aboard NASA spacecraft bound for orbit and beyond. Since the inception of NASA's human space flight program, we have also maintained the term "astronaut" as the title for those selected to join the NASA corps of astronauts who make "space sailing" their career profession. ...

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. Please standby and you will be automatically connected to the new location of the unframed Supernova page. Or, click on the link above. If you have questions or problems, please email me at David Bishop dbishop@vhdl.org . Last modified: Mon Aug 27 12:40:15 EDT 2001

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• THE BRIGHT SUPERNOVA 1991T IN NGC 4527; AN AMATEURS PRESPECTIVE
• Supernovae 2010do in NGC 5374
• Supernovae 2015F in NGC 2442

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... A bright nova has recently been discovered in the constellation of Delphinus (The Dolphin). ... The nova was confirmed late on August 14 at a magnitude of 6.3 (in a dark sky the faintest naked-eye stars are approximately 6.0 magnitudes - the lower the magnitude the brighter a star). ... Nova explosions occur in binary systems composed of a star similar to our Sun but only ~1/10 of its mass, and a star called a white dwarf. ...

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• Terry Mosely's Bulletins
• Armagh Observatory Geminid Meteors
• The International Space Station becomes the second brightest object in the

A closer look at the pole star and the neighboring . constellations, especially the Big Dipper and Cassiopeia . ... This lesson plan supplements: "Finding the Pole Star," section #1a: on disk Spolaris.htm , on the web . ... Know the constellations of the Big Dipper and Cassiopeia, and their use in finding the Pole Star. ... Why do you think Alaska chose the pole star and the Big Dipper to be on its flag? ... You will probably never see there the pole star and rarely see the Big Dipper.) ...

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• Finding the Pole Star
• (S-7a) The Black Hole at the Center of our Galaxy
• Parallax

... I. Mean Surface Brightnesses and Integral Color Indices for Bars Gusev A.S. ================================================================================ Abstract: UBVRIJHK surface brightnesses and color indices of bars of galaxies are determined using surface photometry data for 100 barred galaxies (table1.dat). ... J0 Mean surface J0 brightness 46 A1 --- CI- CI sign 47 -50 F1.2 magn/sq.arcsec. U-B)0 (U-B)0 color index 52 -55 F1.2 magn/sq.arcsec. ...

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• IDL programs

... Bad Astronomy . ... Bad Astronomy: The North Star, Polaris, is a very bright star. Good Astronomy: Polaris is a middling-bright star, easily missed. ... He said it was close to Polaris, the North Star, but he also said it was in the East. ... It's natural, I suppose, to think that such an important star should be bright, but really, that's a conceit, like thinking that the Earth is at the center of the Universe. If more people knew just why Polaris is the North Star, this Bad Idea would stop. ...

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• Phil Plait's Bad Astronomy: Mad Science
• Phil Plait's Bad Astronomy: Bitesize Astronomy

... NGC 2264 - Cone Nebula and Christmas Tree Cluster Region . This is an H II region in the constellation of Monoceros (Greek for Unicorn). The cone shape is a dark absorption nebula of cold molecular hydrogen and dust in front of an emission nebula. The peak of the Christmas Tree is the star (SAO 114264) above the Cone's tip. The base of the tree is the bright variable type O7 star 15 Monocerotis (or S Monocerotis). ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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. (artistic credits: J. English and B. Koribalski) . bkoribal @ atnf.csiro.au

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• The HIPASS Bright Galaxy Catalog
• The Circinus Galaxy
• Eirini (Kat) Tzioumis

... Flux density at 1 GHz (/Jy): 160 . ... Radio: Limb-brightened to NE, with faint extension to the E. Optical: Brightest to the NE, with faint filaments outside the NE boundary. ... Fesen 1984, ApJ, 281, 658. ... ADS . ... 151 MHz observations (1'.2?3'.1) and Half-Mile Telescope at 1.4 GHz (2'.1?5'.4). ... Radio, IR, optical, UV and X-ray comparison, including VLA at 1.6 GHz (3".8?3".3 and 40''). ... 1988, ApJ, 335, 215. ... IR observations of shocked O 2 . ... Observations of shocked molecular...

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