... A Star Where Photons Orbit . ... A Wolf-Rayet Star Blows Bubbles . ... Wolf-Rayet stars can blow bubbles. ... All extremely massive stars will eventually evolve though a Wolf-Rayet phase. ... Wolf-Rayet stars generate bubbles because they continually eject their outer atmosphere as a stellar wind. ... Aurora Over Circle, Alaska . ... Although Aurora might first appear to be moonlit clouds, they only add light to the sky, and hence can not block background stars from view. ... X-Ray Earth . ...

... January 4, 1997 . A Star Where Photons Orbit . ... Explanation : The above computer animated picture depicts how a very compact star would look to a nearby observer. ... From here one can either look down and see several duplicate images of the entire surface of the star, look up and see several duplicate images of the entire night sky, or look along the photon sphere and see the back of one's own head. Tomorrow's picture: Too Close to a Black Hole . ... About APOD > . ...

... 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. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Next: Third: Create a session Up: Starting up correlator control Previous: First: Log on to б  Contents . Both the correlator interface and the correlator spectra display program are run from lbaccc . ... lbaccc . ... A more complete explanation of SPD, including available commands, is found in Appendix C. Next: Third: Create a session Up: Starting up correlator control Previous: First: Log on to б  Contents . ...

... Posts tagged ?black box? ... Another deduced conclusion from reading preprints listed in arxiv/astro-ph is that astronomers tend to confuse classification and clustering and to mix up methodologies. They tend to think any algorithms from classification or clustering analysis serve their purpose since both analysis algorithms, no matter what, look like a black box . ... Category: Algorithms , arXiv , Astro , Bad AstroStat , Cross-Cultural , Data Processing , Frequentist , Jargon , Methods , Stat | ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Cosmic Adventures . ... Cosmic evolution in a computer . ... V irgo Consortium astrophysicists used a 25-terabyte databank to create a computer simulation showing cosmic structure's evolution. ... Get instant access to subscriber content on Astronomy.com...

This note outlines how to configure the computers needed to run DIMMWIT. ... dimmwit : ICE (single-board computer in a box) that runs the Starlight Express CCD camera, to which it is connected by a USB interface. dimmwithost : displays the finder application via the X protocol (finder actually runs on dimmwit). Acts as a file server; both the finder software and the DIMM data are stored on dimmwithost. ... mkdir -p /data/oberon/data/finder . chown coast:coast /data/oberon/data/finder . ...

After a power outage, there is a sequence for booting up the datataking computers. ... It is also the nis+ server that observer,2 uses. It is in the computer room. mofongo: This is the yp server for the linux machines. To check: ping mofongo, then slogin mofongo. wappserv: this is in the wapp room on your right as you enter the room. ... To check ping brandon, slogin brandon. datataking servers in control room. obsdisplay: This is the display computer for the monitors next to obserer2. ...

This animation (MPEG 4.8 Mb) shows the motions of stars caught in the gravitational field of a three-million solar mass black hole in the core of the nearby galaxy M32 . Stars swarm around the black hole like angry bees around a hive. The animation is based on computer simulations and new Hubble Space Telescope observations of M32 . ... In 1992, Hubble observations measured a bright peak, or `cusp' of starlight that independently suggested that the stars were concentrated around a black hole. ...

Russian page Zeiss-1000 TCS computer ( SAO RAS ) . TCS Web-interfaces . 20sm guide and TCS state Web-interface . ... Zeiss-1000 TV-cameras page . ... Common description of Zeiss-1000 new TCS software. PDF-version] . ... Web-interface for Zeiss-1000 administrator. ... Development history: annual reports of TCS software author: . ... FITS/WCS Fixer Web-interfaces page . ... TCS BTA Meteo-graphs . ... TCS Software Author . TCS Hardware Author . Computer System adminisrator . ...

... Although many of the images are used for teacher-driven activities, students do have the opportunity to work with scientists on original research projects. ... The primary goal is to have teachers experience astronomy research and then to bring the research data into their classrooms via the internet. ... They also learn how to process their data, build a solar telescope to take home to their classrooms, and learn background information from astronomers in each of the three research areas. ...

... Science . ... Science Users Information Paranal Science Operations Visitor Information jump to navigation jump to content . Paranal Facilities . ... Offered Instruments . ... Paranal News . ... Paranal Telescopes Overview . Telescopes and Instruments . ... Overview . ... Manuals . ... Instrument Operation Team . ... Paranal Science Operations . ... Please submit one report per observing run or telescope/instrument combination. ... About ESO in general: . ... Telescope/Instrument Manuals: . ...

... Staff . ... Cosmic dust has been observed both in emission and extinction everywhere in our Galaxy as well as in many other galaxies. ... Dust grains are classically thought to form in the winds of Asymptotic Giant Branch (AGB) stars. However, nowadays there is increasing observational evidence for notable dust formation in Supernovae (SNe). ... Hence the observed dust mass of 0.7вИТ0.9M вКЩ in this source can be safely considered as indicative of the mass of freshly formed dust in SN ejecta. ...

... Meade Instruments Corporation . ... Autostar Computer Controllers . 497 Autostar . ... One of the most important advances in telescope control in the past 25 years, the Meade #497 Autostar Computer Controller turns the ETX into an automatic celestial object locating system. ... The #497 Autostar Computer Controller plugs into the control panel of ETX-90EC, ETX-105EC, and ETX-125EC telescopes and enables automatic location of more than 30,000 celestial objects. ... about meade | ... Meade 4M | ...

... SS433 is a close binary system, one star is a supergiant, a second one is a black hole. ... Even a black hole cannot accept such an enormous mass flux, a supercritical accretion disk appears, all the excess gas glows up to several tens of thousands degrees and is ejected off the disk with enormous velocities. ... SAO researchers have found an evidence of the supercritical accretion onto a black hole in SS433, which follows from a brightness variability of the SS433 disk. ...

Date: 10/27/2014 Time:05:56 Moon Age: 3.4 Available Observing Hours: 12.3 Observer: Instrument: Operator: Cage: Lebofsky and Crawfor 90PrimeOne Trueblood PF hours lost to: weather: 5.0 telescope: 0.0 instrument: 0.0 computer: 0.0 Time Temp Humidity Wind Vel. Wind Dir. ... Spring loaded clasp on Bok Walk door broke, pieces on deck of the walk. Door swung and banged into its frame, so we closed the door. ...

Slithead identification (which slithead is installed?) will be sensed and reported by the on-board spectrograph computer. ... Observer's software to handle spectrographic observations will be written by JHU and installed on the Fermilab supplied observatory workstation. ... UW will be responsible for the slithead latch-down control. ... Database computer at APO: The observer's software will query the observatory database for information on the currently installed fiber cartridge. ...

... Home Lectures Lecture Series 2015-2016 . ... Lecture Series 2014-2015 . ... Beyond New York City . ... The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the public. ... Amateur Astronomer Association is pleased to announce we will be offering select, limited reserved seating for current AAA members for the Friday, January 8, 2015 AAA Lecture entitled Robert Nemiroff ?2015 Astronomy Picture of the Day?. ...

spaceweb@oulu.fi - last update: 18 February 1997, 1100 UT (RR) . Black aurora is a lack of auroral emission in a small, well-defined region within an otherwise uniform, diffuse background or within auroras exhibiting a degree of shear behaviour intermediate between that of diffuse and discrete aurora (e.g., Davis, 1978). It appears to be a common feature of the midnight sector during late substorm recovery phase (Trondsen and Cogger, 1997). ... 30 , 371-380, 1978. ... 102 , 363-378, 1997. ...

... Your main research interests concern the computer modelling of galaxy formation. ... The observers think that they are smart, but it is only thanks to these new telescopes that all the exciting recent progress has been made in the study of the high redshift universe. ... By redshift ten, some knots (where filaments and sheets join) are getting dense enough to form galaxies, and the first light in the universe switches on. ... By redshift 5, clusters of galaxies are centred on these knots. ...