Today's APOD | ... Editor's choices for the most educational Astronomy Pictures of the Day about emission nebulae: . ... Explanation: Clouds of glowing hydrogen gas mingle ominously with dark dust lanes in this close-up of IC 1396 , an active star forming region some 2,000 light years away in the constellation Cepheus. ... APOD: 2003 October 22 - The Heart and Soul Nebulas . ... The magnificent emission region, the Orion Nebula (aka M42), lies at the upper right of the picture. ... Index | ...

... Orion's Horsehead Nebula . ... Credit: Anglo-Australian Telescope Board Explanation: The black indentation to the red emission nebula seen just to the right of center of the above photograph is one of the most famous features in any nebulae on the sky. ... The horse head feature is dark because it is really a dense dust cloud which lies in front of the bright nebula and blocks the light. ... Publications with keywords: Orion - Horsehead Nebula . Publications with words: Orion - Horsehead Nebula . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Solar System . ... Space Flight . ... Search Results for ?stellar nursery? Posted on February 21, 2013 | No Comments A new image from the European southern ObservatoryтАЩs Visible and Infrared Survey Telescope for Astronomy €а(VISTA) telescope reveals the glowing clouds of gas and filaments of dust surrounding hot young [ ] . Continue Reading.. Posted on March 2, 2016 | ... Posted on November 12, 2015 | ... Posted on July 28, 2015 | ...

... B. Vicini, A. Natta, A. Marconi, L. Testi, D. Hollenbach, B.T. Draine . 1998, A&A, in press . ... 1998, ApJ, in press . ... L. Testi, F. Palla, A. Natta . ... Francesco Palla . 1998, The Physics of Star Formation and Early Stellar Evolution, eds. C.J. Lada and N. Kylafis, in press . ... 1998, in "The Molecular Astrophysics of Stars and Galaxies - A Volume Honouring Alexander Dalgarno", edited by T. W. Hartquist and D. A. Williams, Oxford University Press, in press . ... Star Formation Group . ...

... 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) ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... Purchase through the AstroShop . ... Publications of the ASP (PASP) . ... Astronomy Beat . ... Lighting the Nebulae . ... The interplay of light and atoms paints the beautiful palette of planetary nebulae. ... So come along on a trip to the inside of a planetary nebula and see what really happens as light and atoms violently interact to create some of the loveliest objects in the night sky. home | ... astroshop | ...

GALAXIES cenA .tiff 40 Bright Radio Galaxy M31.tiff Nikon Andromeda Galaxy (note HII regions in spiral arms) ngc6744.tiff 40 NGC 6744 a face-on spiral clouds_20d.tiff H'blad The Magellanic Clouds our nearest neighbours Lmc_7.tiff Nikon The Large Magellanic Clouds Lmc_zoom.tiff Nikon Detail of previous image smc_7.tiff Nikon The Small Magellanic Clouds smc-zoom.tiff Nikon Detail of previous image 30dor_40_BVR.tiff 40 The 30 Dor ... B [OIII] Halpha trifid.tiff 40" The Trifid Nebula. ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Governance overview . Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Our people overview . ... Publications overview . ... Careers overview . ... ATNF facilities . ... Parkes radio telescope . Australia Telescope Compact Array . ... Parkes | ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Surface brightness measurements of . extended galactic nebulae . ...

... Unlike the clouds on Earth which are made of water, nebulae are made up of gas and dust. ... Gas and dust are cold, so they don't glow with light bright enough for our eyes to see the hotter an object is, the brighter it shines. ... The nebula in this picture is glowing red because of a very hot star at its centre, you can see it here as the seagull's eye . ... This is dust that has been lit up by hot, young stars inside the nebula. ... The two stars orbit each other, we called them binary stars! ...

... Volodymyr Kuzkov, Sergii Kuzkov, Zoran Sodnik - Direct measurements of laser light aberration from the ARTEMIS geostationary satellite through thin clouds // arXiv.org - New resalts to paper at Conference ICSOS-2014, Kobe, Japan, May 7-9 (2014), S4-4, [view pdf file] . ... Kuz'kov V., Volovyk D., Kuzkov S., Sodnik Z., Pukha S. - Realization of Laser Experiments with ESA'S Geostationary Satellite ARTEMIS. ... Preparation to Optical Communication Experiments With ARTEMIS Satellite. ... V.P. Kuz`kov. ...

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. ...

... John Mason lecture in Belfast: Wednesday 3 September . ... Astronomy Ireland Public lecture: Monday 8 September 2008 at 8 pm. The lecture is entitled "Light Pollution in Ireland" and will be given by Albert White of the Irish Light Pollution Awareness Campaign (ILPAC). Albert will tell us about the financial, environmental and astronomical cost of badly designed public lighting. More information at www.astronomy.ie . International Year of Astronomy, Ireland National Node . ...

Program Number . ... Esther M. Hu, University of Hawaii . Near Infrared Observations of a Sample of z~6.5-6.7 Galaxies . Abstract . ... Panchromatic WFC3 survey of galaxies at intermediate z: Early Release Science program for Wide Field Camera 3. ... HST/ACS images of part of the GOODS field . ... The present program will build on these observations by using Wide-Field Camera 3 to obtain ultraviolet and near-infrared imaging, and grism spectroscopy, covering ~30% of the GOODS (South) field. ...

. The light nebula in Orion constellation. The nebula in Orion's constellation is the cloud of ionized hydrogen, luminiscenting due to reworking of four stars irradiation (these stars are seen because of the great brightness of the central part of nebula). Back .

... This image shows clearly the 3-D structure of this star formation region: a large cavity, created by the radiation pressure from new-born stars located in the brightest area of the image, lies within a huge cloud of dust and gas. Identified as a truly indepedent star cluster, NGC 1980 is associated with this well-studied star formation region, around the brightest star seen at the bottom of this image, Iota Ori. ...

... 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 . ...

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 | ...

... 2006 . ... A.F.Kholtygin . ... Abstract . ... text in Russian . ... text in pdf (0.55Mb) . ... Kholtygin A.F., Shneiwais A.B. Stochastic Data in Astronomy: Fourier Analasis of Strongly Uneven Time Series , Astrophysics, 48 , 87-100 ( 2005 ) . ... Kholtygin A.F. UV lines in spectra of Planetary Nebulae (in russian) , Ultravililet Universe II , Proc. of the Conference, held in Instititute of Astronomy, May 19-20, 2006, Moscow, Eds: B.M.Shustov, M.E.Sachkov, E.A.Kilpio, M., Yanus-K, pp. ...

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Subject, Problems and Objects of Theoretical Astrophysics. ... Stellar Photospheres, Their Features. ... Physics of Continuous Radiation Absorption in Stellar Photospheres. ... Continuous Radiation Absorption in Stellar Photospheres of Various Spectral Classes. Solar Type Photospheres. ... Characterisics of Absorption Lines. ... Interstellar Absorption Lines, Their Features. ... Physical and Dynamic Features of Interstellar Medium, Which Follows from Observations of Interstellar Absorption Lines. ...