... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2016 January 14 . Infrared Portrait of the Large Magellanic Cloud . ... Explanation: Cosmic dust clouds ripple across this infrared portrait of our Milky Way's satellite galaxy , the Large Magellanic Cloud. ... Dominated by dust emission, the Large Magellanic Cloud's infrared appearance is different from views in optical images . ...

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• APOD: 2012 January 15 - Infrared Portrait of the Large Magellanic Cloud
• APOD: 2009 October 17 - Bright Nebulae in M33
• APOD: 2002 March 7 - Comet Ikeya-Zhang Brightens

... August 6, 1998 . Infrared Horsehead . ... Explanation: This famous cosmic dust cloud was imaged in infrared light by the European Space Agency's Infrared Space Observatory (ISO) satellite. The false-color picture shows the bright infrared emission from dust and molecular gas in part of the Orion star forming region surrounding the Horsehead Nebula . In visible light, the horsehead-shaped dust cloud looks dark against a background of bright glowing gas. ... About APOD > . ...

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• APOD: August 7, 1998 - M65 Without Moth
• APOD: 2000 June 13 - The Keyhole Nebula in Infrared
• APOD: September 5, 1998 - The Pulsar Powered Crab

... In collaborative work with David Garc?a Alvarez (an Observatory PhD student now at Harvard) and John Butler, an extensive study of the RS CVn binary HR1099 was completed leading to two papers; the first on Doppler imaging and the second on flare activity. Spectra for the Doppler imaging were taken at two different sites, Kitt Peak National Observatory (KPNO), Arizona, and Mount Stromlo Observatory (MSO), Australia, during the 1998 MUltiSIte COntinuous Spectroscopic (MUSICOS) campaign. ...

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• J.G. Doyle, Research Astronomer
• M.D. Smith, Research Astronomer

... Infrared Portrait of the Large Magellanic Cloud . ... Credit Copyright: ESA / NASA / JPL-Caltech / STScI Explanation: Cosmic dust clouds ripple across this infrared portrait of our Milky Way's satellite galaxy , the Large Magellanic Cloud. ... The dust temperatures tend to trace star forming activity. ... Dominated by dust emission, the Large Magellanic Cloud's infrared appearance is different from views in optical images . ... Close Comet and Large Magellanic Cloud . ... The Large Cloud of Magellan...

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• Bright Nebulae in M33
• Астронет > Infrared Portrait of the Large Magellanic Cloud
• Journal "Peremennye Zvezdy"

... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...

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... This gives us another handle on how distant the stars are. ... Stars differ not only in distance, but also in apparent brightness. ... Ranking stars by brightness . ... The brightness of the star decreases as the square of the distance. ... At what distance would a 100-watt light bulb have the same brightness as the brighter stars? ... So if the distance of the 100-watt light bulb was 5 kilometers, the distance of the brighter stars would be 10,000,000,000,000 kilometers, or about a light-year. ...

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• ASP: Picture an Astronomer
• ASP: Book Review
• ASP: Indiana Jones and the Astronomers of Yore

In star-forming galaxies, dust plays a significant role in shaping the ultraviolet (UV) through infrared (IR) spectrum. ... Using three samples of galaxies observed with the Spitzer Space Telescope and our dusty radiative transfer model, we find that young stellar populations (on the order of 100 million years old) dominate the dust heating in star-forming galaxies, and old stellar populations (13 billion years old) generally contribute less than 20% of the far-IR luminosity. ...

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• John H. Debes
• Andy Fruchter's Homepage
• Near Infrared Camera and Multi-Object Spectrometer Instrument Handbook for

... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

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• New LBV Stars in the Andromeda Galaxy

... It is found that the correlation coefficients between these two parameters calculated separately inside and outside the sunspot formation zone ±30 have cyclic variation and occur in anti-phase. This suggests different mechanisms of formation of the corona in the fields of small, medium, and large scales. ... The relationship between the coronal green line brightness (CGLB) and the magnetic field strength (MFS) has been investigated by constructing the corresponding synoptic maps for the 1977-2001. ...

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• http://www.izmiran.rssi.ru/~obridko/papers/2004IAUS_223_69B.pdf

... Bad Astronomy . ... Mad Science . ... Site Info . ... Public Talks . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Who is this guy who calls himself "The Bad Astronomer?" ... First, yes, I am a real live astronomer (when people ask me what astronomers do, I tell them "They astronom !" ... These are emitted by powerful objects like black holes, exploding stars, and super-dense neutrons stars. ... Finally, am I really a bad astronomer? ... 2008 Phil Plait. ...

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

Definitions of Magnitudes and Surface Brightness 1 The magnitude system 1.1 Apparent magnitude Astronomers are stuck with the antiquated old system of magnitudes and so a clear explanation of what this system is and how it relates to more sensible units is important. ... 1.2 Absolute magnitude Absolute magnitude is a logarithmic luminosity scale. ... One usually goes by the round about process of referring to the absolute magnitude of the sun. ... Magnitudes and surface brightness 6/6 ...

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• Julie Banfield | Astronomer
• C/2006 P1 (McNaught)

Astronotes Armagh Planetarium's Stellar Blog! ... Our Galaxy . ... Stars . ... Other Galaxies . ... Light of other eyes, other times: The X-rays and IR radiation making up the image have been travelling for a long time. ... The inspiration here came from a new ESA image of M31, the Andromeda Galaxy, composed from two very different images. ... Our nearest galactic neighbour, the Andromeda Galaxy?s brightness is caused by the hundreds of billions of stars that are contained within. ...

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• Other Galaxies | Astronotes - Part 2
• Digistar 4 Planetarium Projection System in Action | Astronotes
• March 2012 Night Sky Wonders | Astronotes

The Andromeda Galaxy (M31) . Hot stars burn brightly in this image from NASA's Galaxy Evolution Explorer, showing the ultraviolet side of a familiar face. At approximately 2.5 million light-years away, the Andromeda Galaxy (M31) is our Milky Way's largest galactic neighbor. ... The bands of blue-white making up the galaxy's striking rings are neighborhoods that harbor hot, young, massive stars. ... When observed in visible light, Andromeda s rings look more like spiral arms. ...

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• A surprisingly bright superbubble | Astronomy.com
• What can astronomers tell us about the different colors on the surface of
• Frantic activity revealed in dusty stellar factories | Astronomy.com

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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• Galaxy Gallery Page II
• CCD Astronomy Magazine Article Page 6
• ESO Press Release 06/96, 16 February 1996

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

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• Gallery ? Amateur Astronomers Association of New York
• AAA Spring Astronomy Class: The Physics of Astronomy тАУ February ? March 2016
• Lecture Series 2015-2016 ? Amateur Astronomers Association of New York

Picture an Astronomer A Project ASTRO Activity For Grades 4-12 The media and our past experiences have shaped and created our expectations of people in various careers. ... However, astronomy is carried out by men and women in every country and by people young and old. ... Activity Description Before an astronomy unit or the first visit by an astronomer to your classroom, it can be instructive to have the students picture what an astronomer looks like and then discuss their assumptions. ...

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• The AstroStat Slog Blog Archive Magnitude [Eqn]
• activities
• The AstroStat Slog Blog Archive different views

... Now, think about a much bigger move: What do you think it would be like if the Earth moved to a different part of our Galaxy? Our Galaxy, the Milky Way, is shaped like a whirlpool: It has bands of stars that spiral around the centre, which astronomers call the Galaxy s arms . ... We live in the outer parts of the Milky Way, in one of its spiral arms. ... The small centre of the Milky Way is a much more crowded place, as this is where most of its stars are found. ...

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• Mario van den Ancker
• Rivi: Be Stars
• Frantic activity revealed in dusty stellar factories | ESO

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... The expansion is measured as a number called the Hubble Constant . ... Our value is about 20% lower than the one got with the Hubble Space Telescope in 1994," said Dr Jim Lovell, leader of the team that made the measurement. The Hubble Constant is named after American astronomer Edwin Hubble, who in the 1920s found that other galaxies were moving away from ours. ... The Hubble Constant links the galaxy's distance with its speed." ... A short run-down on the Hubble Constant: . ...

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• NGC 253
• HIPASS Bright Galaxy Catalog
• Bright prospects: Comparing the H Survey with large-scale radio continuum

XMM-Newton Science Analysis System . ... A different approach is done via the setting withctisrcpos =Y: all event energy corrections do not use the actual RAWY coordinate but the corresponding RAWY location of the source ( SRCPOS ) as determined by the task epframes (either automatically or via setting withsrccoords =Y). ... The task epchain may be used with the setting ccds =4 withctisrcpos =Y to process only the CCD 4 where usually the bright source is located that causes the Out-of-Time events. ...

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• Generation from Ground Calibration Data