... GOODS unites extremely deep observations from NASA's Great Observatories, Spitzer , Hubble , and Chandra , ESA's Herschel and XMM-Newton , and from the most powerful ground-based facilities, to survey the distant universe to the faintest flux limits across the electromagnetic spectrum. ... The space-based observations are complemented by ground-based imaging and spectroscopy, including extensive commitments of ESO and NOAO observing time. ... 2010-04-10: Deep VLA 1.4 GHz data for GOODS-North . ...

... 27.10.2007 . ... Credit Copyright: Robert Gendler and Stephane Guisard Explanation: A jewel of the southern sky , the Great Carina Nebula , aka NGC 3372, spans over 300 light-years, one of our galaxy's largest star forming regions. ... Eta Carinae is the bright star left of the central dark notch in this field and just below the dusty Keyhole Nebula (NGC 3324). ... 2007 2008 . ... Publications with keywords: Keyhole Nebula - carina nebula . Publications with words: Keyhole Nebula - carina nebula . ...

... 2011 June 9 . The Great Carina Nebula . ... Explanation: A jewel of the southern sky , the Great Carina Nebula , also known as NGC 3372, spans over 300 light-years, one of our galaxy's largest star forming regions. ... The Carina Nebula is home to young, extremely massive stars, including the still enigmatic variable Eta Carinae , a star with well over 100 times the mass of the Sun. Eta Carinae is the brightest star at the left, near the dusty Keyhole Nebula (NGC 3324). ... About APOD | ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Australia Telescope Online Archive (ATOA) . ... Parkes | ... Australia Telescope 20GHz Survey . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... The Secret Inner Life of the Orion Nebula . ...

... News . ... Supernova showered Earth with radioactive debris . ... What is the average time for dust discharged from a supernova to be reconsolidated in part or whole to form a new start? ... A dust grain ejected when a massive star explodes as a supernova can follow a few different paths. One possibility is that it will leave its host galaxy entirely as part of a galactic wind. ... Get instant access to subscriber content on Astronomy.com! ... LATEST NEWS . ...

Photon Scattering: Basic Principle of Photon Scattering . Audio Narration is available . No Scattering: Photon Source and Detector . ... For optical photons, scattering goes as wavelength to the -4 power. In the case of blue photons compared to red photons, this means that blue photons are about 10 times more likely to get scattered than red photons. ... Watch the blue photons scatter away from the detector . ... Interstellar dust make stars appear redder than they really are . ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... The Universe in the Classroom . ... The Great Cosmic Map . ... But maps can also provide vivid insights into fundamental truths about the world we live in. ... Maps have also been fundamental to understanding our place in the universe beyond Earth. Cosmographies — maps of the universe — are as old as human civilization, and have gone hand in hand with cosmogonies describing the creation of the world. ...

Postdoctoral researcher, University of Cambridge . ... My research interests are centred around understanding galaxy evolution across cosmic time.б  . ... In the local Universe I use large surveys for gas, metals, and stars, to shed light on the physical processes governing the evolution of galaxies across all cosmic epochs.б  . Dr. Matt Bothwell, Room K29, Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK, +44 (0)1223 33754 msb47 -at- mrao.cam.ac.uk . ...

... Science . ... Science Users Information > Science and Technical Meetings > Conferences 2007 > agnii2007 . ... Science Users Information . Observing Facilities . ... Observing with ESO Telescopes . ... Data Handling and Products . ... Science Data Products Forum . ... ESO Data . ... By penetrating the obscuration that, in Type 2 sources, hides the nuclear regions in the UV to the near-IR spectrum, these new surveys are finding the radio quiet counterparts of the powerful radio galaxies. ...

... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...

... Proposing for VLBI Time at Arecibo . ... Documentation (Field System, VLBA4 terminal, Mark 5 system) . ... In 2001, the Arecibo Observatory received its hybrid VLBA-MARK IV (VLBA4) data acquisition system, and currently NAIC commits Arecibo to support VLBI observing up to a maximum of 4% of the 305-m's observing time. ... Tracking Time (h:mm) . ... The inclusion of the 305-m Arecibo radio telescope can dramatically boost the sensitivity of VLBI observations, even with its limited source tracking...