... Milky Way over the Pinnacles in Australia . ... In the background, just past the end of the central Pinnacle, is a bright crescent Moon. The eerie glow around the Moon is mostly zodiacal light , sunlight reflected by dust grains orbiting between the planets in the Solar System . ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: Milky Way - zodiacal light . Publications with words: Milky Way - zodiacal light . ... Southern Craters and Galaxies . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2016 February 17 . Milky Way over the Pinnacles in Australia . ... In the foreground of the featured image are the Pinnacles , unusual rock spires in Nambung National Park in Western Australia . ... In the background, just past the end of the central Pinnacle, is a bright crescent Moon. ... Almost Hyperspace: Random APOD Generator . ...

... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

... Armagh Planetarium . ... Universe . ... Posted on February 19, 2011 | ... Continue Reading.. ... The Hubble Space Telescope recently imaged NGC 2841 as part of an investigation into how new stars are created. ... No Comments Kepler-11 is an amazing, newly-discovered system of exoplanets. ... Hello, IтАЩm Colin, welcoming you to Astronotes, the PlanetariumтАЩs official blog. Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . Monograph Publications . IAU Publications . ... Publications of the ASP (PASP) . ... Mercury Magazine . ... Order Mercury Issues . ... Astronomy Beat . ... Mercury Magazine Contents and Select Excerpts . ... January/February 2006 . ... Deadly Cosmic Storms, Jennifer Birriel and Ignacio Birriel . ... Sky Events, Richard Talcott . January Sky Map | February Sky Map | ...

... February 3, 1998 . A Magellanic Mural . ... Explanation: Two galaxies stand out to casual observers in Earth's Southern Hemisphere : the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud (SMC). ... Recent observations of the LMC (on the left) have determined that it is on a nearly circular orbit around our Galaxy, and have even helped in the determination of the composition of dark matter in our Galaxy . ... About APOD > . ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . Australia Telescope Compact Array . ... CSIRO, Australia's national science agency, operates a number of world-class radio astronomy observatories that are collectively known as the Australia Telescope National Facility or ATNF. ... CSIRO also manages the Murchison Radio-astronomy Observatory, where the Square Kilometre Array telescope infrastructure in Australia is to be centred. ...

... a spiral galaxy some million light years away, made by combining images . ... 1st February using the Armagh Robotic Telescope at the Armagh Observatory. ... Image credit: Simon Jeffery. Astronomers Simon Jeffery and Jack Wright have obtained their first images of deep-space objects using a new тАЬroboticтАЭ telescope at Armagh Observatory. ... Simon Jeffery, project scientist for the new telescope, said: "After two years of hard work, it is very satisfying to see the first images looking so good. ...

XMM-Newton Science Analysis System . ... Meta Index / Home Page / Miscellaneous Algorithms Omdetect has a simple extended-source validation function to recognise scattered-light features and ignore them. The algorithm works by assuming a scattered-light feature consists of a number of connected pixels with values significantly above the background interspersed with pixels not significantly above the background and arranged in a random fashion throughout the source region. ...

Galactic Wind Shells and High Redshift Radio Galaxies . ... M.Krause . Astronomy & Astrophysics, v.436, 845-851 . Very Light Jets II: Bipolar large scale simulations in King atmospheres [small version] . ... Simulations of Astrophysical Jets in Dense Environments . M.Krause, V.Gaibler & M.Camenzind . in: High Performance Computing in Science and Engeneering '05 eds.: E.Krause, W.J ger & M.Resch. ... M.Krause & M.Camenzind . ... Martin Krause & Paul Alexander . ... Martin Krause . ...

... Home Lectures Lecture Series 2011-2012 Lecture Series 2011-2012 ? тАЬA Ray of Light in a Sea of Dark (Matter)тАЭ ? Charles Keeton . ... Charles Keeton , associate professor of physics and astronomy at Rutgers University and faculty director of the Aresty Research Center for Undergraduates , will speak to the AAA Friday, March 2, on тАЬA Ray of Light in a Sea of Dark (Matter).тАЭ The free public lecture begins at 6:15 p.m. in the Kaufmann Theater of the€а American Museum of Natural History . ...

... self-absorption - the absorption of light shining on an object by a process similar to that which produced the light originally; if a cloud emits less light than it absorbs from other clouds behind it, this net loss of light, termed self-absorption , causes the foreground cloud to appear darker than the background field (the term is from spectroscopy, where small absorption dips sometimes occur in larger emission lines, making the latter look as if it is absorbing part of itself) . ... HISA Main ...

... The shape of the spectrum and its overall level are closely tied, which is why both sensitivity and vignetting were discussed in the previous section. ... Therefore, undulations in the sensitivity function, which have length scales of many ngstroms, at most have a small linear effect across a given spectrum. ... Thermal drifts caused a spectrum to move on the photocathode, so the GHRS routinely performed a SPYBAL (spectrum Y-balance) to properly center the spectrum on the diode array. ...

... Tonight's Sky . ... Observing . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... How do light pollution filters work? Do they actually help? ... Light pollution reduction (LPR) filters work because many outdoor lighting sources do not shine evenly across the visible spectrum. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

... Bad Astronomy . Misconceptions . ... Bad Astronomy : "We're light years more advanced than our competition!" ... Even the closest astronomical object, the Moon, is 400,000 kilometers away! ... A beam of light will travel 9,500,000,000,000 kilometers in one year. This distance is defined as a light year ; the distance light travels in a year. ... This is another example of Bad Astronomy; like a light year, a parsec is a unit of distance, not time (to be specific, it equals 3.26 light years) . ...

... Now we're getting ready for the Australian SKA Pathfinder ( ASKAP ) and the Square Kilometre Array ( SKA ) itself. I co-lead the Galactic ASKAP survey, GASKAP, and the Polarisation survey, POSSUM. I have roles in SKA science planning, including membership on two SKA Science working groups (HI and The Galaxy), the SKA Science and Engineering Advisory Committee, Australia New Zealand SKA Coordination Committee (ANZSCC) and ANZSCC's Science Advisory Committee. ... Read More . ...

... In principle, two observers on the ground can tell, by comparing the position of the same auroral arc against the background stars. ... The display stretches across Canada; just below it, in the middle of the picture, are the lights of Chicago, next to Lake Michigan. ... The Canadian scientific satellite Isis-2 (1971) carried an auroral imaging camera and discovered the diffuse aurora, a broad ribbon around the auroral oval, too spread-out to be noticed from the ground. ... Auroral Acceleration . ...

... IR-Light Emitters & Detectors . Russian High Technologies . ... Infrared detectors and light emitters are key components that are used for applications including radiometry, guidance, gas analysis, medicine etc. ... Devices are operating in spectral range of 1.0-5.0 um and have high efficiency. ... Light Emitters . ... Spectral response of PRX 27.. ... Applications . ... Among the features there are high speed response, high efficiency, wide temperature range. ... IR-Light Emitters and Detectors | ...

... Spectrosc., 90 , 574-579. [ abstract (in English; ASCII file); paper (in Russian; PS file)] . ... Astronomy Letters, 26 , N 10, 679-690. [ abstract (ASCII file); paper (PDF file)] . ... 2001) . ... 72 , N 5, 607-612. [ abstract (ASCII file); paper (PS file)] . ... Scattering and polarization properties of the non-spherical particles. in: Smith W.L., Timofeyev Y.M. (eds.) IRS 2000: Current Problems in Atmospheric Radiation, A.Deepak Publ. (in press) [ abstract (ASCII file); paper (PS file)] . ...