... 19.03.2010 . ... Credit: Rogelio Bernal Andreo (Deep Sky Colors) Explanation: Seen as a seagull and a duck, these nebulae are not the only cosmic clouds to evoke images of flight. ... The expansive Seagull (upper left) is itself composed of two major cataloged emission nebulae . ... Blown by energetic winds from an extremely massive, hot star near its center, the Duck nebula is cataloged as NGC 2359 . ... Publications with keywords: emission nebula . Publications with words: emission nebula . ...

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• The Bubble Nebula
• Journal "Peremennye Zvezdy"
• The Coldest Brown Dwarf

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2012 August 4 . The Bubble Nebula . ... Explanation: Blown by the wind from a massive star, this interstellar apparition has a surprisingly familiar shape . ... Above and right of the Bubble's center is a hot, O star , several hundred thousand times more luminous and around 45 times more massive than the Sun. ... About APOD | ...

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• APOD: 2014 October 2 - The Bubble Nebula
• APOD: 2011 August 30 - The Coldest Brown Dwarf
• APOD Index - Nebulae: Emission Nebulae

... STScI-PRC96-13a HUBBLE CAPTURES COLLISION OF GASES NEAR DYING STAR This colorful image from the Hubble Space Telescope shows the collision of two gases near a dying star. Astronomers have dubbed the tadpole-like objects in the upper right-hand corner "cometary knots" because their glowing heads and gossamer tails resemble comets. Although astronomers have seen gaseous knots through ground-based telescopes, they have never seen so many in a single nebula. ...

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• http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ISM/NGC7027.txt
• http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/Galassie/Seyfert2.txt
• http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ISM/butterflyBW.txt

Proposal Identi cation No.: ... Although there is no question that the CO(1-0) transition at 115 GHz is an e ective tracer of translucent and dense molecular gas, there are some problems when this transition is used in regions where signi cant di use molecular gas may be present. In these regions, the CH hyper ne, main-line, ground state transition at 3335 MHz may be a more e ective tracer of low-density molecular gas in clouds with visual extinction less than 1 magnitude. ...

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• Star Names
• Galactic Spiral Structure in H I Emission and Self-Absorption
• Disclaimer National Astronomy and Ionosphere Center (Arecibo Observatory)

Astronotes Armagh Planetarium's Stellar Blog! ... Colin Johnston . ... Our Galaxy . ... To locate it, look along the imaginary line between the two end stars on the leading edge of the PloughтАЩs blade (Merak and Dubhe) and Polaris (the North Star), the galaxy M82 (also known as the Cigar Galaxy) along with its companion M81, lies just off this line about a third of the way between the Plough and Polaris. €а€аAs usual, the supernova is far brighter than its home galaxy, appearing as an extra star. ...

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• A Spectacular View of the Lagoon Nebula | Astronotes
• constellations | Astronotes - Part 4
• constellations | Astronotes - Part 5

The Astronomy Net . ... The Moon is Earth's only natural satellite. It has no formal English name other than "the Moon", although it is occasionally called Luna (Latin: moon), or Selene (Greek: moon), to distinguish it from the generic term "moon" (referring to any of the various natural satellites of other planets). ... The first man-made object to impact the lunar surface was Luna 2 in 1959; the first photographs of the normally occluded far side of the Moon were made by Luna 3 in the same year. ...

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• Signs Constellations Of The Zodiac - an Astronomy Net Article
• Buffalo Astronomical Association - Baa, AstroGuide Listing
• Constellations and Asterisms

The site content is primarily OS/2-oriented, although I also keep large sections dedicated to music (rock/pop lyrics, MIDI XG files). ... If you already know what you want, you might try search . ... Currently, HTTP transfers are limited to files smaller than 128KB. ... Multi-file downloads, however, are always through HTTP. ... Please do not send me questions like "how to use this file which I found on your site" or "where can I find the best MPEG3 player for Windows95", I will not answer them. ...

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• SGML reference information for HTML

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

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• The ATNF Pulsar Database
• Disclaimer
• ATNF Colloquium

... Meade Series 4000 Nebular Filters incorporate the very latest in interference coatings technology. ... Technical Basis of the Meade Broadband Nebular Filter: As shown in the transmission graph below, the Meade Broadband Nebular Filter strongly rejects the light of sodium- and mercury-vapor lights as well as natural airglow and auroral emissions. ... Meade Series 4000 Narrowband Nebular Filters . ... Meade Series 4000 Oxygen-III Nebular Filters . ... Meade Series 4000 Photo-Visual Color Filters . ...

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• Meade Instruments Corporation - #497 Autostar Computer Controller for ETX-90EC,
• UHTC Coatings: Ultra High Transmission Coatings, Special Coatings, Telescopes,

In the literature, there is an ambiguity pertaining to the existance of a far-IR excess in RS CVn systems. ... We found 72 acceptable detections in the 12mu band, and 40 in the 25mu band (50% more than the IRAS Point Source Catalog). ... Furthermore, at the higher wavelength bands the IRAS angular resolution drops from 0.5 arcmin at 12mu to 2 arcmin at 100mu and the background becomes very complex so one cannot be certain about the origin of the observed flux. ...

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• Armagh Observatory
• Abstract
• Image Gallery

The Astronomical Catalog portion of CDBS contains several atlases consisting of both observed and model stellar,galactic, and emission line object spectra as well as HST standard stars spectra are available in STSDAS table format for use in the calibration of HST instruments, with synphot, with the exposure time simulators, or for any other purpose. this is it There are two independent directories containing the spectra of ultraviolet and optical standard stars. ... For details see K93MODELS . ...

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• The Spitzer discovery of a galaxy with infrared emission solely due to AGN
• Warm Dust and Spatially Variable Polycyclic Aromatic Hydrocarbon Emission in
• The Spectral Energy Distribution of Dust Emission in the Edge-on Spiral Galaxy

... Users . Connections (constellation) . ... Data Collection and Analysis . AAS 221 . ... The graph below represents the connections between users tweeting about the 221st meeting of the American Astronmical Society . ... The circles represent Twitter accounts; the color is coded based on the number of followers of each account using the scale given at the top of the graph (it's also included in the mouse-over text for each node), although I don't have this information for all users. ...

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• A constellation of tweets from #AAS225
• A constellation of tweets about JWST@SXSW
• A constellation of tweets from #AAS223

... Constellations are star patterns on the sky ? ... Every star or galaxy we see can then be located on one of the 88 constellations into which we have divided the sky (coincidentally, the same number as there are keys on the piano.) Each of the 88 regions takes its name from the best-known star group or picture in that region, so the constellation Orion is the sector of the sky that includes the easily recognized star-pattern of Orion the Hunter. ... The Sky Challenger Star Wheels kit ? ...

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• ASP: Constellations
• ASP: Star Science in the Autumn Sky

... Bad Astronomy . Misconceptions . ... Bad Astronomy : The zodiac contains 12 constellations. ... A couple of things not noted at that site: if Ophiuchus occupies more of the ecliptic than Scorpius, why is it not in the astrological zodiac instead of Scorpius? Most likely, it's because Ophiuchus is not a particularly bright constellation, while Scorpius is a very bright, vivid group of stars that really does look like a scorpion. ... Also, the goat is Capricornus , not Capricorn . ...

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• Phil Plait's Bad Astronomy: Bitesize Astronomy

... StarCalc Home Page - Downloads . ... File . StarCalc (English version) . ... With minimal configuration, version 5.72 of StarCalc includes the next interfaces: "Horizon", "Horizontal coordinategrid", "Equatorial coordinate grid", "Constellation boundaries", "Constellation lines", "Constellation names", "Star proper names", "Bright Star Catalog", "Deep-sky objects", "Sun", "Moon" and "Planets and satellites" . Plugins for StarCalc . ... Interface to NGC 2000 (plugin + catalog file) . ...

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• M31.SPB.RU: Astronomy - Outside - Constellations

... Four spiral galaxies in Leo . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... The Golden Earring, planetary nebula NGC 2867, and barred spiral galaxy NGC 3109 . ... Capturing a spiral in Leo . The most distinctive feature of NGC 3521 is its long spiral arms that are dotted with star-forming regions and interspersed with veins of dust. ... The arms are rather irregular and patchy, making NGC 3521 a typical example of a flocculent spiral galaxy. ...

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• An anarchic region of star formation captured | Astronomy.com
• constellation observing | Astronomy.com
• M46 and NGC 2438 in the constellation Puppis | Astronomy.com

2014 May version . ... Green D. A., 2014 , Bulletin of the Astronomical Society of India, 42 , 47-58. ( .pdf , or arXiv.org:1409.0637 ) If you make use of the detailed version of the catalogue, then plaese also cite: . Green D. A., 2014, `A Catalogue of Galactic Supernova Remnants (2014 May version)' , Cavendish Laboratory, Cambridge, United Kingdom (available at "http://www.mrao.cam.ac.uk/surveys/snrs/" ). ... Copyright D. A. Green 2014. 25872nd access to this version of the catalogue. ...

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• Mie Extinction Bojan Nikolic web pages (r. 329)
• Mie Extinction

This is an image of the Galaxy NGC3877 and the supernova 1998S in the constellation Ursa Major. ... As others have posted, the supernova is actually easier to see than the parent galaxy. I was able to see it when I was done imaging last night (3/28/98) with the Fastar 8 SCT at 221X . ... Back to Supernovae in NGC and IC galaxies . Back to Supernova 1998S images . David Bishop Last modified: Tue Oct 6 15:40:58 EDT 1998 ...

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• Supernovae 2012fr in NGC 1365

... Column 1 gives the object name from the Case or Markarian catalogs. ... For Markarian galaxies the errors of coordinates usually lie inside 2'' (Lipovetsky [ 1983 ]). Column 4 gives the eye-estimated apparent blue magnitudes according to the same sources. ... Other names of a galaxy we give in column 7. ... In column 3 we cite the original emission-line code of the galaxy for the strength of [O III ] doublet according to the Case catalog (s - strong, m - medium, w - weak). ...

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• HII regions H109-line catalog
• Problems with star names
• The Sloan Digital Sky Survey Quasar Catalog. I. Early Data Release

... Looking south-east to the constellations of CтАж . ... Title: Looking south-east to the constellations of Centaurus and Scorpius behind the ANU 2.3m telescope building . ... Looking south-east to the constellations of Centaurus and Scorpius behind the ANU 2.3m telescope building NOTE: All images are copyright and must not be reproduced or mirrored in any form without written permission. ...

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• Looking past the ANU 24-inch telescope to the constellations of the Southern
• Although the cement render is flaking off and all wooden doors and hatches are
• C/2006 P1 (McNaught)