... Many of these radi HII regions lie beyond the range of optical detection, at distances exceeding several kpc; they thus provide a comprehensive coverage of the southern HII regions in the Galaxy over the longitude range 210 to 360^o and consistute a vital data base for the study of galactic structure. ... C Caswell (1972) . ... In column 16, "V", or a specific nebula name, denotes the presence of a visible optical counterpart, and "A" indicates the absence of an optical counterpart. ...

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• Radio survey for new compact HII regions
• Galactic Bulge Region OH 1612MHz survey
• COMPACT RADIO

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... Travel to Guesthouse . ... Survey Telescopes . ... This video fades back and forth between views of the stellar nursery Monoceros R2 in visible and infrared light. The visible-light view was created from digitised photographs through red and blue filters forming part of the Digitized Sky Survey 2 (DSS) and the new infrared view comes from the VISTA telescope at Paranal. ...

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• LMC Region near the Tarantula Nebula
• GOODS

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

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• Solar Active Region 10999 by Deirdre Kelleghan | International Year of
• Astro-Art | International Year of Astronomy in Ireland | Astronomy 2009

... We report on our ongoing project ``Infrared Study of HII Regions Associated with Small Clouds.' ... These IR data, combined with optical imaging (which will be obtained from the IAC-80 telescope), IRAS survey maps, and existing CO observations of the associated clouds, will allow us to undertake a detailed investigation of the gas-to-dust mass ratio, initial mass function and the star-formation efficiency in these complexes. ... CHECKPSF: check the PSF (Point Spread Function) model, . ...

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I-GALFA View of a Galactic Tangent Region . ... Image featured in NAIC Newsletter #46 . I-GALFA image of hydrogen gas in a tangent region outside the Sagittarius arm. ... Because we are viewing this gas in a direction closely aligned with (tangent to) its orbital motion, it appears to be moving away from us (we are orbiting the Galactic center with a similar speed, but our own motion in a different direction). ... The gas near 60 degrees longitude is being viewed tangent to its orbital motion. ...

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• World Day at Arecibo - Examples and Highlights
• REU Science Area
• Planetary Radar: Arecibo Radar Images of Planets

... WFPC2 Home . ... Bright stars near the WFPC2 field of view can cause various artifacts to appear in science images. ... When writing Phase II proposals, observers will sometimes attempt to avoid bright stars by placing them in the un-imaged "L" shaped region adjacent to CCD PC1, or in the region just outside the nominal field of view. ... In both cases the optics can image this light back onto the CCD's. Bright stars must be placed at least 10 arcseconds outside the field to avoid artifacts. ...

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• Observing Faint Targets Near Bright Objects
• Star Formation Rates in Resolved Galaxies: Calibrations with Near- and
• The Incidence of Highly Obscured Star-forming Regions in SINGS Galaxies

. True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . Images show regions used to extract spectra . Regions with red strikes are excluded . Background was subtracted from a region around or close to the SNR. Back to SNR J0509.5-6731 Index . Chandra Supernova Remnant Catalog . Main Page | Galactic SNR | Magellanic Cloud SNR . True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR .

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• Chandra Images for SNR J0046.6-7307
• Chandra Images for J0525.4-6559
• Chandra Images for G029.7-00.2

... Counting Stars in the Infrared Sky . ... The bulging center of our Milky Way Galaxy, dark cosmic clouds, the thin galactic plane, and even nearby galaxies are easy to spot in this sky view. ... The solar active region designated number 0030 is now appearing on the visible hemisphere of the closest star. ... The star cluster in RCW38 was hiding. Looking at the star forming region RCW38 will not normally reveal most of the stars in this cluster. ... Proxima Centauri: The Closest Star . ...

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... Research objects and scientific purposes . Space scientific program includes development and launch of two supersmall spacecrafts "Universitetskiy" and "Kompas-2" intended for monitoring of radiation conditions near the Earth. ... All the studies conducted in the near-Earth space are characterised by strong radiation fields. ... The circular polar orbits, which cover all the near-Earth space, are the most favorable for comprehensive studies of the radiation conditions near the Earth. ...

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... Problems of Developing and Near-Earth Environmental Protection. Electromagnetic and Corpuscular Radiation of Sun as the Main Factors of Near-Earth Environment Forming. Solar UV and X-Rays. ... Ionosphere. ... Dynamic of Ionosphere Plasma.Ionosphere Conductance. ... Magnetosphere. ... Energetic Particles Motion in Magnetosphere. ... Auroral Particles and Phenomenons in Auroral Borealis Zones. ... Auroral Particles Invasion of Atmosphere and Its Effects - Auroral Borealis, Ionization, Heating. ...

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. [ English Version ] . [ Новости ] . [ Спутниковые данные ] . [ SMIS ] . [ ] . Облачность над регионами России . (текущие данные со спутника NOAA) . Район г.Москвы . Район г.Нижнего Новгорода . Район г.Санкт Петербурга . Район г.Перми . Район г.Екатеринбурга . Район г.Омска . Район г.Астрахани . Район г.Оренбурга . Район г.Салехарда . Условия использования этих данных и условия размещения рекламы Вы можете узнать по адресу: . info@smis.iki.rssi.ru . Back to SMIS Home Page .

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• SMIS IKI RAN (Sample Images / Fires)
• SMIS IKI RAN (Regional Weather)
• SMIS IKI RAN (News )

... Elsewhere in the tank he mounted an "electron gun" like the one found in TV picture tubes--a hot wire emitting electrons, and plates charged to positive voltages to pull them out and speed them on their way. ... On the other hand, the electrons of the polar rain (see files linked to the bottom of this page), which apparently did come from the Sun, were indeed found in patches surrounding the magnetic poles, exactly like the patches of light Birkeland observed on his terrella. ...

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• INTERBALL Zvenigorod Symposium, February 8-13, 1999
• The magnetosphere models
• The Sun

... Дни открытых дверей к юбилею САО РАН (12-14 апреля 2016 г.) . Международная конференция "Dark Ages and White Nights (Spectroscopy of the CMB)" (20-24 июня 2016 г.) . ... Международная конференция MULTI-SPIN GALAXIES - 2016 (26-30 сентября 2016 г.) . Международная астрономическая конференция "Физика звезд: от коллапса до коллапса" (3-7 октября 2016 г.) Архив . ... Подробнее.. ... 10.02.16 . ... БТА в реальном времени . ... Цейсс-1000 в реальном времени . ... Последнее обновление: 22/03/2016 ...

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... Absorption by neutral atomic hydrogen in luminous spiral galaxies provides an excellent tool to study the gas kinematics in their nuclear regions. ... Since the absorption lines are intrinsically narrow as a result of the low temperatures of the optically thick gas, typically 30 to 150 K (Dickey, Salpeter & Terzian 1979), it is surprising that numerous galaxies show H I absorption over a broad range of velocities (a few hundred kms -1 ); see e.g., Fig. ... range . ... NGC 253 . ... NGC 660 . ...

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• A 1500 MHz SURVEY FOR PULSARS NEAR THE GALACTIC CENTRE
• The giant HII region NGC 3603
• The Puzzle

... region (region-6.2.2) [xmmsas_20030110_1802-5.4.1] . ... module region _mod subroutine region get parameters; open source list; foreach source transform celestial coordinates to sky location; calculate initial estimated extraction radius; calculate distance to nearest neighbour ; loop sort sources in ascending order of nearest neighbour separation; initialise array of flags; ; First pass considering just nearest- neighbour pairs foreach source in sorted list if( ...

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• Description

... 2002 July 18 . Sunspot Region 30 . Credit: MDI , SOHO , ESA , NASA . Explanation: The solar active region designated number 10030 (or simply region 30) is now appearing on the visible hemisphere of the closest star . ... The panels above were recorded July 15, 16, and 17 (top to bottom) by the MDI instrument on the space-based SOHO Observatory as the solar rotation slowly carried the large, dynamic sunspot group across the Sun's nearside . ... About APOD | ... NASA Technical Rep.: ...

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• APOD: 2006 December 20 - Star Forming Region NGC 6357
• APOD: 2015 April 25 - Cluster and Starforming Region Westerlund 2
• APOD: March 28, 1996 - Near the Nucleus of Hyakutake

... Thus all regions of the 0.94-2.50 micron wavelength range accessible from Mauna Kea can be recorded using five fixed angle gratings. ... Grating Angle . ... Efficiencies for the NIFS gratings are shown above. The NIFS spectrograph uses a Bouwers collimator and a refractive camera. ... With these assumptions, the NIFS system efficiency including the Gemini telescope optics but excluding the transmission of the adaptive optics system is about 0.17 e - /photon at J , and 0.22 e - /photon at H and K . ...

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• Gemini Near-Infrared Integral-Field Spectrograph (NIFS) Science.
• GSAOI Instrument Description Page
• Siding Spring Survey

... We present a new cooled grating near infra-red spectrometer designed to acquire spectra at the TIRGO telescope in the 0.9-2.5 micron region with a resolving power of 1000, equiped with a Rockwell NICMOS 3 detector. keywords: Infrared Spectroscopy :: NICMOS 3 :: TIRGO . The LonGSp (Longslit Gornergrat Spectrometer) project is part of the work that the Osservatorio Astrofisico di Arcetri is doing in order to build a new generation of instruments for the IR telescope of Gornergrat (TIRGO). ...

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• The BD+40 region (Abstract)
• First Occultation of 3C 273 in the near-IR with OmegaCass
• APOD: June 16, 1998 - An Active Region of the Sun

Astronotes Armagh Planetarium's Stellar Blog! ... Solar System . Sun . ... Space Flight . ... Posted on March 16, 2015 | No Comments As everyone knows on Friday 20 March 2015, a total solar eclipse will occur across the far northern regions of Europe and the Arctic. ... Continue Reading.. ... 8 Comments The ancient Chinese thought they were stars inside a solar orb. ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

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• Aurora - Northern Lights viewed from Ireland | Astronotes

... Young super-Jupiter found wandering without a parent . ... Astronomy for Kids . ... Tune into the Asteroid Day press conference . ... Astronomy 101 . ... How can six Trojan asteroids reside in Neptune's L4 region without colliding? ... The gravity of a planet, its star, and the centrifugal force associated with the planetary orbit nearly balance in five regions near the planetт??s path where an asteroid (or spacecraft) could orbit safely. ... Get instant access to subscriber content on Astronomy.com...

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• Sifting through dust near Orion's Belt | Astronomy.com
• Is emission nebula NGC 6334 a mini starburst region? | Astronomy.com
• Rugged terrain found near Moon's south pole | Astronomy.com