... R2685 Date Received: 2011-Oct-03 17:15:29 Technical Page Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Planetary Radar Radar Solar System 24 Hours 4 hours A Radar Mapping Search for Recent Volcanism on Venus Radar mapping using the Arecibo telescope in 1988 provided the first 2-km resolution Earth-based image of Venus. ...

... Venus is a geologist's dream planet.' ... Because Venus is so similar in diameter and mass to our world, and also has a gaseous atmosphere, it has been called the Earth's "sister planet''. ... New radar images of Venus, just returned from NASA's Magellan spacecraft orbiting the planet, have provided astronomers the clearest view ever of its surface, revealing unique geological features, meteor impact craters, and evidence of volcanic eruptions different from any others found in the solar system. ...

... Steeghs Tomography | ... Top right: Hynes (Schematic of an X-ray Binary); http://www.astro.soton.ac.uk/ ~rih/. This site provides information on optical data reduction and on running Doppler and modulation tomography modules. ... Center: The Keck observatory in Hawaii. ... Optical data reduction for Magellan . ... Center: The Magellan telescopes at Las Campanas, Chile. Right: Modulation tomogram of the X-ray novae V616 Mon using Magellan observations (Neilsen et al. ...

... Tonight's Sky . ... Venus . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Buy and sell astronomy gear April 9 . ... Could Venus be shifting gear? ... However, surface features seen by Venus Express some 16 years later could only be lined up with those observed by Magellan if the length of the Venus day is on average 6.5 minutes longer than Magellan measured. ... Only registered members of Astronomy.com are allowed to comment on this article...

... Sun . ... ESA?s Venus Express mission returned this image of sulphuric acid clouds over the southern hemisphere of Venus (Image credit: ESA) . ... Venus was long thought of as Earthт??s т??sister planetт?? ... Galileo was first to see that Venus shows phases just as our Moon does and he cleverly used this fact (along with the planetт??s proximity to the Sun) to demonstrate that Venus orbited the Sun and not the Earth. ... As its surface is hidden by clouds, Venus was regarded as a mysterious planet....

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ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... The 2011 AusGO/AAO Observational Techniques Workshop . ... The Australian Gemini Office in conjunction with the Australian Astronomical Observatory is pleased to announce the 2011 AusGO/AAO Observational Techniques Workshop . ...

... The Exploration in Education (ExInEd) program at the Space Telescope Science Institute seeks to promote basic teaching and learning by exploiting the connections between astronomy research and education. Our primary product category consists of Electronic PictureBooks (EPBs): educational show-and-tell software allowing astronomers to communicate their ideas and results to a broad audience. ... ExInEd has also created its first CD-ROM, entitled Space Science Library of Electronic PictureBooks. ...

Sp ectral Variations of Of ?p Oblique Magnetic Rotator Candidates in the Magellanic Clouds Nolan R. Walborn Space Telescope Science Institute1 , 3700 San Martin Drive, Baltimore, MD 21218 walborn@stsci.edu Nidia I. Morrell Las Campanas Observatory, Carnegie Observatories, Casil la 601, La Serena, Chile nmorrell@lco.cl YaЁ Nazґ2 el e GAPHE, Dґ artement AGO, Universitґ de Li` ep e ege, Al lґ du 6 Aout 19c, Bat. ... 2015, A&A, 577, A107 e, Nazґ Y., Walborn, N.R., Rauw, G. et al. ...

. Authors . Problem . Method . Advises . Contact Analysis of an accuracy of CCD asteroid observations carried out by professional and amateur astronomers . An accuracy estimation of CCD asteroid observations contained in the Minor Planet Center Database and carried out in the years 1999 - 2006 is realized. About 20 millions individual positions of the Numbered and Unnumbered Minor Planets were tested by means of calculations of (O-C) residuals to derive "mean error of a single observation" for more than 400