... Southern Orion: From Belt to Witch . ... Farther right and below is the Orion Nebula , M42 , itself visible to the unaided eye. ... A bright blue star, Rigel illuminates the ominously shaped dust patch known as the Witch Head Nebula , visible as the blue reflection nebula near the lower right corner. ... Publications with keywords: Orion - Orion Nebula - Witch Head Nebula . Publications with words: Orion - Orion Nebula - Witch Head Nebula . ... Dust of the Orion Nebula . ...

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• Aurora and Orion
• Астронет > Southern Orion: From Belt to Witch
• Journal "Peremennye Zvezdy"

... 2008 April 8 . Southern Orion: From Belt to Witch . ... The familiar trio of stars , visible to the unaided eye, can be found across the upper left. Otherwise, the southern part of the constellation Orion has taken on a new look in this unusually deep and wide view First note that the lower left belt star, Alnitak , is the easternmost star in Orion's belt. Left of Alnitak is the Flame Nebula , with clouds of bright emission and dramatic dark dust lanes. ... About APOD | ...

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• APOD: 2002 April 20 - Orion Nebula: The 2MASS View
• APOD: April 7, 1999 - Denizen of the Tarantula Nebula
• APOD: 2003 April 25 - M17: A Hubble Close-Up

I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

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• The hidden fires of the Flame Nebula* | ESO
• ESO - Science Users Information
• Infrared/visible comparison of the full VISTA Orion Nebula image | ESO

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Stars . ... Space Flight . ... Monthly Sky Notes . ... NGC 6357's inner star forming region glows with the emission of ionized hydrogen gas. Image credit: ESO/VVV Survey/D. Minniti. ... Located around 8000 light years away in the constellation of Scorpius , NGC 6357 (sometimes called the Lobster Nebula ) is a typical stellar nursery, filled with vast clouds of gas and tendrils of dark dust. ... Subscribe to Astronotes . ...

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• Telescope nights at Armagh Planetarium | Astronotes
• Our Galaxy | Astronotes - Part 2
• Nebulae | Astronotes

EMBARGOED UNTIL: 12 NOON (EST) April 1, 1999 PHOTO NO.: STScI-PRC99-12 MULTIPLE GENERATIONS OF STARS IN THE TARANTULA NEBULA In the most active starburst region in the local universe lies a cluster of brilliant, massive stars, known to astronomers as Hodge 301. ... This star cluster is not the brightest, or youngest, or most populous star cluster in the Tarantula Nebula -- that honor goes to the spectacular R136. In fact, Hodge 301 is almost 10 times older than the young cluster R136. ...

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• http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ISM/Reflection.txt
• APOD: 2000 April 24 - Reflection Nebula M78
• The Orion Nebula: The Jewel in the Sword (ESO PR Photos 03a-d/01)

... The Hubble Space Telescope (HST) provides us with the highest angular resolution tool with which to investigate the jets produced by stars during their birth and the circumstellar accretion disks where we believe planets might form. Keywords: star formation, Herbig-Haro objects, stellar jets, proto-planetary disks . ... HST WFPC2 . ... Future HST observations with WFPC2 will measure proper motions in jets already observed and will be used to study other examples of jets from young stars. ...

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• GRB 990123Page
• Research Interests
• NStars2A: Proper motions - the NLTT and 2MASS

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... Editorial: Climbing a Little Closer . ... In the late 1950s, my uncle Morgan and his best friend, Gerald, were using my uncle's small telescope to look at the night sky. ... Sputnik spurred them like so many others to build ships to climb into the sky, to join that chilly, violent Universe that embraces our little warm droplet of life. ... Yet they climbed higher each successful shot. ... Trying to climb higher. ...

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• ASP: Contents, March/April 2006
• ASP: Contents, March/April 2000
• ASP: Contents, March/April 2004

... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Bright planets meet at dusk . ... Astronomy magazine subscribers can read the full article for free. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

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• VLT takes most detailed infrared image of the Carina Nebula | Astronomy.com
• Antennae Galaxies move closer | Astronomy.com
• GALEX reveals the largest-known spiral galaxy | Astronomy.com

... Bad Astronomy . ... Bitesize Astronomy . ... Have you ever looked at pictures of Saturn's rings and noticed what look like gaps in the rings? ... Gian Domenico Cassini discovered a large gap in Saturn's rings in 1675. Later, an astronomer named Encke discovered a smaller gap near the edge of the rings. ... It was found long ago that an orbit in the Cassini Division, as the large gap is named, has a period almost exactly one-half that of one of Saturn's moons named Mimas. ... 2008 Phil Plait. ...

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• Phil Plait's Bad Astronomy: Misconceptions
• Phil Plait's Bad Astronomy: Bad TV

... 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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• Asteroid 1998 ML14 1998 Aug 14-17
• NSF Senior Review of Astronomical Facilities
• The Tarantula Nebula

... Contacts . 2009: . New Nearby Dwarf Galaxy with Low Metallicity. It was discovered that the interstellar medium of the SDSS J0926+3343 dwarf galaxy, located in the nearby Lynx-Cancer Void, has the metal abundance 35 times lower than the solar one - the lowest value between thousands of known galaxies inside the sphere with the radius of 20Mpc. ... For contacts: Pustilnik S.A. ) . Archive . ...

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• Galaxy sector, archive 2010
• G 89-14

... This is the famous Orion nebula which is centered on the middle star of the sword of Orion (this is a 4th magnitude star). ... Here we present two CCD images of it. The black and white image was obtained using an ST6 Camera on a small telescope. The color image was obtained on the 48-inch telescope at Mt. ... The obtainer, Nelson Caldwell, took CCD images through Red, Green and Blue filters and later combined them to produce this image. ...

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• Astronomy HyperText Book: Interstellar Medium

Discovery of PSR J0108-1431, the closest known neutron star . ... S. Johnston (RCfTA, University of Sydney, Australia), . M. Bailes (ATNF, CSIRO, Australia), . ... Here we report the discovery of PSR J0108-1431, a pulsar which has the lowest known dispersion measure, 1.83 pc cm^-3. Reasonable models of the interstellar electron density distribution indicate that its distance is less than 100 pc, making it the closest known radio pulsar and probably the closest known neutron star. ...

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• May 2007 ATUC meeting agenda and supporting documents
• The Orion Nebula
• Archive of VLBI Observations Majordomo List

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

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• Publications about VISTA

... Issue 1.4: Added the following RGS flags: EVATT_NEXT_TO_BADPIX, EVATT_BAD_SHAPE, EVATT_ONBOARD_SER Issue 1.3: Added section explaining the meaning of the attributes (MOS only) Added EVATT_UNKNOWN_RAWX_PATTERN Added EVATT_EVLIST_LOCAL Issue 1.2: Added: EVATT_OUT_OF_CCD_WINDOW EVATT_OUTSIDE_THRESHOLDS * Scope This technical memorandum addresses the naming conventions for the event attributes in the XMM SAS. ... EVATT_COSMIC_RAY This event was detected with one of the large patterns (30 or 31). ...

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• http://xmm.vilspa.esa.es/calibration/documentation/epic_cal_meetings/200102/Burst_mod_Stat-E_Kendziorra.pdf
• http://xmm.vilspa.esa.es/calibration/documentation/epic_cal_meetings/200204/ringberg_MOS_cooling_tests_proposal_afa.pdf
• http://xmm.vilspa.esa.es/sas/5.4.1/doc/mssllib/ChangeLog

... Comet Ikeya-Zhang, designated C/2002 C1 (Ikeya-Zhang), is named after Kaoru Ikeya of Shizuoka prefecture, Japan, and Daqing Zhang of Henan province, China, who independently discovered it on the night of 1 February 2002. A preliminary orbit reported the following day indicated that it would come moderately close to both the Earth and the Sun and that it might become visible to the naked eye during late March and April 2002. ... Bailey, M.E., Clube, S.V.M. and Napier, W.M. The Origin of Comets . ...

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• Astronomy and Poetry: Wednesday 1 April 2009 | International Year of Astronomy
• Terry Mosely's Bulletins
• Performance

... GSAOI Home . ... Science . ... Deep imaging at J , H , and K is required to identify all stellar objects, brown dwarfs, and planetary mass objects in the central region of the Orion Nebula Cluster down to masses comparable to that of Jupiter. This is required to establish the initial mass function, i.e., the number of stars of each mass that have formed, in this region of intense massive star formation. ... The fields of the GSAOI detectors are shown as four green squares in each frame. ...

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• C/2006 P1 (McNaught)
• Siding Spring Survey
• Naomi McClure-Grffiths

... This image also shows the famous Cygnus X-1 system. ... These images were processed by incorporating Ha, SII, and RGB data, taken over several nights during May of 2007. ... 5/4/2007 through 5/9/2007 . ... The RGB was processed traditionally, and incorporated into the Ha/sG/SII image in two steps: The main RGB nebulosity was incorporated at a fairly low opacity, while the RGB stars were incorporated in at 100%, in "color" blend mode. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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How Precise is the Orbit of (99942) Apophis and how Probable is its Collision with the Earth in 2036? ... At present the orbit of asteroid (99942) Apophis and the forces acting on it are not known with sufficient accuracy to predict with certainty its motion after the close approach to the Earth in April of 2029. As a result of this approach the current heliocentric orbit of the asteroid will be changed by Earth's gravity. ...

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• Laboratory of minor bodies of Solar system

... RATAN-600 data for the BL Lacertae objects (multi-frequency catalogue, Version 1.0) . GPS radio sources . ... BL Lacertae objects . ... The difference between these objects is the peak frequency of the synchrotron component of their spectral energy distribution (HBLs: high-energy peak, LBLs: low-energy peak, IBLs: intermediate). ... The observations were carried out with the RATAN-600 radio telescope during 2006-2011 at six frequencies: 1.1, 2.3, 4.8, 7.7, 11.2 and 21.7 GHz. ...

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• Текстовая обработка. Хрестоматия по программированию на Си в Unix
• "Structure" publications in 2007 year
• The SNR X-rays Catalog