... Comet Siding Spring Passes Mars . ... In fact, Comet C/2013 A1 (Siding Spring) passed closer to the red planet than any comet has ever passed to Earth in recorded history. ... Messier 6 and Comet Siding Spring . ... This looks like a near miss but the greenish coma and tail of Comet Siding Spring (C/2013 A1) are really 2,000 light-years or so away from the stars of open cluster Messier 6. ... The Helix Nebula from Blanco and Hubble . ... How did a star create the Helix nebula? ... 2013 2014 . ...

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... VLBI Schedule . ... The following is a list of bugs and desirable features needed for cdisko (and recorder server) . ... Current recording disk hilite should only happen when current recording host is selected (ie if remote host changed) . ... For eVLBI and remote recording have a list of predefined (from host based config file) remote hosts (plus port, TCP window etc). ... JS: The "eVLBI settings" window in cDisko now has a list of the predefined remote hosts as defined in the ~/.disko_config file....

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• VLBI Wiki | Main / CDiskoHints
• VLBI Wiki | Main / ATCAObservingSummary
• VLBI Wiki | Main / ObservingNotes

... 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 Unit Telescopes Overview - This page is outdated, an update is in process.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 Secondary mirror (M2 Unit) - This page is outdated, an update is in process.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 Coating Unit - This page is outdated, an update is in process. ...

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• ESO - The European ELT

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2014 October 15 . Mysterious Changing feature on Titan . Image Credit: Cassini Radar Mapper , Cornell , JPL , ESA , NASA . Explanation: What is that changing object in a cold hydrocarbon sea of Titan? ... Subsequent observations in 2014 found the object remained -- but had changed! ... About APOD | ... A service of: ASD at NASA / GSFC . ...

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• APOD: 2003 October 6 - A Near Record Ozone Hole in 2003
• APOD: 2014 October 21 - Mimas: Small Moon with a Big Crater
• Sternberg Astronomical Institute

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Monthly Sky Notes . ... March . ... Posted on May 9, 2012 | 9 Comments €аA globular cluster is made of hundreds of thousands or even millions of stars packed together in a pretty compact ball. ... Continue Reading.. ... 15 Comments Today Sirius, the brightest star in the night sky is an unmistakable blue-white in colour although it does twinkle a lot and can appear to change colour. ... Posted on March 29, 2012 | ... What are the stars? ...

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• supernovae | Astronotes
• Six glorious spiral galaxies seen by the European Southern Observatory. |
• Our Galaxy | Astronotes - Part 3

... Over the first 4 years, its X-ray telescopes eROSITA and ART-XC will survey the whole sky with a record sensitivity in the 0.5-10 keV energy band. ... The goal of the second international Spectrum-RG conference is to discuss the different scientific topics addressed by the mission, synergies with surveys at other wavelengths, and requirements to follow-up observations.Contributed talks and poster presentations are invited on the topics related to the SRG science goals. ... Active galactic nuclei . ...

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OptInt PmWiki . ... Tech Meet 12 . ... Page History | ... MROI Delay Line Design Contract . ... Interface Control . ... Return to Tech Meet 12 ( Edit ) . ... ISS Data Collector probably not suitable as LocalDataCollector and unlikely to be ready in time . ... ISS Data Collector probably not suitable as LocalDataCollector (e.g. issues with retrieval of recorded data), and unlikely to be ready in time . ... TempController has interface to ISS . ... TempController (EnvController?) has interface to ISS . ...

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• OptInt PmWiki : Tech Meet 11 | History
• OptInt PmWiki : Tech Meet 12
• OptInt PmWiki : Main / Recent Changes

... Tonight's Sky . ... Supernova showered Earth with radioactive debris . ... Observing springtime deep-sky objects with a large telescope . ... The Very Large Telescope probes remains of medieval supernova . ... New detailed observations with the European Southern Observatoryт??s (ESO) Very Large Telescope (VLT) of the remains of a thousand-year-old supernova have revealed clues to the origins of cosmic rays. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

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• large (8 inches or larger) | Astronomy.com
• The Large Magellanic Cloud, open cluster NGC 1664, and reflection nebula NGC
• Astronomy Magazine - Interactive Star Charts, Planets, Meteors, Comets,

... ISC Kosmotras . Top Management Founder of ISC Kosmotras - Dr. Vladimir A. Andreev News . ... Dnepr launch record 17 August 2011. Cluster Launch of Dnepr LV 22 August 2013 KOMPSAT-5 Launch 21 November 2013. Dnepr Cluster Mission 2013 19 June 2014. ... According to the decision of ISC Kosmotras Board of Directors, Dr. Vladimir A. Andreev, Director General of ISC Kosmotras, has been appointed to a newly established position of ISC Kosmotras President. ... E-mail: info@kosmotras.ru . ...

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• Mission profile
• Launch Sites
• Dnepr launch record

... The tension in members of the telescope changes as we move the dome, ch, azimuth, and tiedown tensions. The lifetime of a beam is counted in the number of times the change in tension goes through a cycle. ... Examples of telescope motion with corresponding unbalanced moment. ... The number of cycles were computed for : 5000, 10000, 15000, 20000 kipFeet momemnt change. ... The number of cycles on the telescope was computed using the change in the unbalanced moment (at a corner). ... cycles . ...

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• drift maps in J2000 coordinates
• pulsedPwrIntoAlfa

To write a successful HST proposal it is useful to have some insight into the process by which proposals are reviewed and selected. ... How the New Cycle 9 Review Process Worked , December 1999, pp. 21-22. by Meg Urry [ cmu@stsci.edu ], Head of the STScI Science Program Selection Office. ... Evolu tion of the HST Proposal Selection Process: Changes for Cycle 9 , Meg Urry, June 1999, pp. ... There were five key changes in the proposal review process for Cycle 9. ... Cycle 10 Announcement Page . ...

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• Evolution of the HST Proposal Selection Process: Changes for Cycle 9
• HST this week: 301

... Up: Surveys & Large Scale Data Management . ... The CoCat (Co-processor Catalogue) project main goal is to parallelize the VizieR large catalogue treatments (data extraction, cross-matching) for reducing the response time. ... Figure 2: The CoCat cluster. As the Sun server is becoming overloaded we decided to move the set of large catalogues to a Linux cluster (the CoCat cluster). ... The CoCat cluster involves one master node and five slave nodes (Fig 2 ). ...

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• Object Detection Using Multi-Resolution Analysis
• The View From NASA Headquarters: Trends And Changes in Mission Operations And

... The world's largest optical telescopes, the VLT (Very Large Telescope Array) are located in Chile, country that was recently hit by the 7th most powerful ever recorded earthquake, which, very sadly, is now counting many fatalities. ... You would wonder, did the mirrors survive such a strong earthquake? ... Tom Barclay , PhD student at Armagh Observatory, is about to go observing there in two weeks. ... All ESO buildings are earthquake-proof" , answered Tom. ... 28 Feb 2010 23:01 . б© 2010 OASES . ...

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• Stars Beyond Maturity
• C.S. Jeffery, Research Astronomer
• Why Asteroid 2008 TC3 Represents a Landmark - Dr David Asher, from Armagh

... One of this year's largest mass ejections from the Sun's atmosphere was recorded last Sunday by TESIS telescopes aboard the CORONAS-PHOTON satellite ( video - wmv 4.3 MB ). ... Over the course of a week, two gigantic solar prominences were simultaneously ejected from the surface of the Sun. ... Earth will not feel the Sun's influence either. ... The TESIS observatory ї TESIS: www.tesis.lebedev.ru . ... One of this year's largest mass ejections from the Sun's atmosphere (movie WMV, 4.3 MB) . ...

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• This year's largest group of sunspots passes across the solar disk
• Project's diary

Next: Scattering properties Up: Polarization properties (transmitted radiation) Previous: Linear polarization: wavelength dependence . Traditionally, the main problem considered in connection with circular interstellar polarization is the meaning of the wavelength where changes the sign . ... This is also demonstrated by Fig. 19 (lower panel) which shows the wavelength dependence of the factors of linear and circular polarization for particles of magnetite as was done by Shapiro ([ 1975 ]). ...

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• INI main page
• Polarization efficiency: size/shape/orientation effects
• Database of Optical Properties -- Level: subpage

SITE 2010 Comprehensive Characterization of Astronomical Sites Kislovodsk, Russia, 49 October 2010 Conference Summary Marc S. Sarazin*a a European Southern Observatory, Garching, Germany Abstract The main topics discussed during the Site 2010 conference are outlined and the outcome is described. Keywords: Astronomical Site testing, precipitable water vapor, atmospheric turbulence, cloudiness, seeing 1. ... Site surveys for National observatory projects in China, India, and Iran benefit from this. ...

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• Results of ELT site testing programs - I
• Methods and instruments to measure/monitor major site properties

Stellar Clusters are very useful laboratories for empirically studying stellar evolution. ... All cluster stars are at the same distance . All cluster stars have the same physical age . ... CM diagram Young Cluster In this case we see the Main Sequence fully represented. The blue dots represent massive stars with short main sequence lifetimes. ... Thus, identifying the most massive star which is still on the main sequence is an effective means of determining the age of a stellar cluster. ...

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• Rainfall in Eugene Oregon
• CCDs for Material Scientists
• U of O High Energy Physics Seminars

... The extraordinary solar activity of October--November 2003 manifested itself in many powerful eruptive events, including large CMEs and extremely powerful flares. ... We study large-scale post-eruptive activity manifestations on the Sun associated with CMEs, i.e., dimmings and coronal waves, observed in extreme ultraviolet with the EIT telescope on SOHO and SPIRIT telescope on the CORONAS-F satellite. ...

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• Oct-Nov 2003
• History

... Team . ... V.V.Sokolov "The gamma-ray bursts, core-collapse supernovae and global star forming rate at large redshifts" . ... I.V.Sokolov, A.S.Moskvitin, Eda Sonbas, O.V.Verkhodanov, O.P.Zhelenkova "A galaxy cluster in the GRB 021004 field" . ... The monitoring of GRB afterglows and the study of their host galaxies with the SAO RAS 6-m telescope from 1997". ... A.S.Moskvitin, T.A.Fatkhullin, V.V.Sokolov and V.N.Komarova, "Spectral and photometric monitoring of CCSNe at SAO RAS" . ...

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• Vitaly Goranskij, SAI/Moscow Univ.
• Writing Larger Programs
• di_eks

Ganymede is the largest moon in our solar system, larger even than the planets Pluto and Mercury. ... Ganymede's surface consists of two main types of terrain: old, dark polygonal units, and young, bright valleys and ridges (see figure 11 ). ... In a similar way, hitting a large block of ice with a hammer makes white marks. ... Ganymede as seen by Voyager 2. ... Because Voyager couldn't spot any large impact craters, scientists have concluded that the moon's surface is young. ... Moon . ... Europa . ...

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• ASP: An Ancient Universe - Changes in the Solar System
• ASP: Indiana Jones and the Astronomers of Yore
• ASP: Beacons in the Gloom