... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Bright planets meet at dusk . ... Astronomy magazine subscribers can read the full article for free. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

Making HST Pictures: Examples and Illustrations . ... These illustrations represent some of the steps and techniques used to produce “pretty pictures” from HST images. ... TIFFs (ftp) . ... Separate images are exposed through different color filters. ... An alternate way to make color images . ... Eight bit (one byte) images contain 256 different values that may be represented by 256 shades of gray or 256 arbitrary colors from a color map (or palette) of all possible colors. ...

... Using the DRAO Synthesis Telescope (Landecker et al. 2000), the Canadian Galactic Plane Survey ( CGPS ; Taylor et al. 2002) has captured a multitude of HISA features, the majority of which are invisible in prior surveys at lower resolution. ... Since the HISA gas temperature must be less than the background brightness temperature, all the H I shown in this poster has T ~ 100 K. Figure 1 provides panoramic views of the cold H I visible as HISA in the CGPS. ... GIFs: HISA + CO | HISA only | ...

... 2015 December 10 . Daytime Moon Meets Morning Star . ... Explanation: Venus now appears as Earth's brilliant morning star, standing in a line-up of planets above the southeastern horizon before dawn. ... This time series follows the daytime approach of Moon and morning star in clear blue skies from Phoenix, Arizona. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . NASA Web Privacy Policy and Important Notices . A service of: ASD at NASA / GSFC . ...

Astronomy Picture of the Day . ... Credit Copyright: Luis Argerich , Agustin Llorens, Guido Medici, Gabriel Remotti Explanation: On September 8, brilliant planet Venus appearing as the evening star stood near a slender, crescent Moon at sunset. ... But from some locations in South America, the Moon actually passed in front of Venus in a lunar occultation . ... Moons and Jupiter . ... Comet Meets Moon and Morning Star . Daytime Moon Meets Morning Star . Kenya Morning Moon, Planets and Taurid . ...

Calibration asp ects in the XMM-Newton Slew Survey Michael Freyb erg , MPE · Optical Loading · Pattern Pileup / Pseudo-MIPs · Internal FIFO overflows · Straylight / PSF · Background Michael Freyb erg MPE Garching XMM-Newton EPIC Calibration Meeting , MPE Garching , 04 May 2006 1 XMM-Newton Slew Survey: EPIC -pn · ... 918 ­ 952 CalClosed (first + last slew IDLE) Michael Freyb erg MPE Garching XMM-Newton EPIC Calibration Meeting, MPE Garching, 04 May 2006 19 ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

... Every year at the Annual Meeting of the Astronomical Society of the Pacific (held most recently this past September in Millbrae, just south of San Francisco), I present a report outlining some of the numerous programs undertaken by your Society during the previous 12 months. ... Since most ASP members were unable to attend the Annual Meeting, the editor of Mercury thought it would be appropriate if I reprised my talk within the pages of this magazine -- but not simply as a regular article. ...

True Color Image Gallery: Galactic SNR | Magellanic Cloud SNR . ... Chandra Proposer's Guide pile up section ] During frame readout, the ACIS CCDs take 40 microsec to (parallel) transfer the charge by one pixel. As a result of this, each frame readout, each pixel is exposed for 40 microsec to a source (plus cosmic X-ray background) at each location along its column. ... Note also that the image does not just trail, it extends along the whole column. ... Chandra Supernova Remnant Catalog . ...

B?rbel Koribalski: Overview (20min.) ... David Barnes: HI total flux comparisons (10min.) ... Martin Zwaan: The HI mass function (20min.) ... Other short contributions and discussions . ... Martin Zwaan: Reliability and Completeness (20min.) ... parameters for the deep catalogue . science from the deep catalogue - who will do what? HI50 meeting: who is presenting what? can the deep catalogue be unveiled at this meeting? ... Martin Meyer: SINGG Project - progress and science projects (20min.) ...

OptInt PmWiki : MROI Fast Tip Tilt / Tech Meet 6 . ... Attendees: JSY, MF, ADR, XS, CAH, DMAW, EBS . ... With reference to error budgets . ... Selection of layouts and error budgets to present at CoDR . ... Dog-leg Transmissive . ... Zoom Transmissive . ... ADR: Refine selected layouts . ... Space to overhang table . ... ADR: Tolerancing of direct transmissive layout under table bending . ... Printable View of http://www.mrao.cam.ac.uk/projects/OAS/pmwiki/pmwiki.php/MROIFastTipTilt/TechMeet6) ...

МОСКОВСКИЙ ЦЕНТР НЕПРЕРЫВНОГО МАТЕМАТИЧЕСКОГО ОБРАЗОВАНИЯ . Уже несколько лет в начале января Независимый Московский Университет проводит встречи Пьера Делиня с победителями конкурса молодых математиков фонда Дмитрия Зимина "Династия". ... Программа встреч и Тезисы докладов . ... Дмитрию Фроленкову . Илье Вьюгину . ... Илье Щурову . ... Дмитрию Талалаеву . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Space Flight . ... Earth Satellites . ... Leonid meteors seen from 13 km altitude aboard an aircraft during the 1999 Leonids Multi-Instrument Aircraft Campaign (Leonid-MAC). Comet Tempel-Tuttle provides the cometary debris for the Leonid meteor shower. ... Every 17-19 November Earth crosses Tempel-TuttleтАЩs orbit and the Leonids become visible. With clear, dark skies observers may see 10 to 15 Leonid meteors every hour on those mornings. ...

... Best Targets for Astrophotography and What They Reveal About Our Universe . ... Ruben Kier's photos, articles, and letters have appeared regularly in Astronomy and Sky Telescope magazines. ... This year, Ruben summarized a decade of experience with CCD imaging in his new book, The 100 Best Astrophotography Targets: A Monthly Guide for CCD Imaging with Amateur Telescopes. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... APT Activities and Science Results 3. ... APT Secretary Philip Edwards (ISAS) reviewed the aims of the APT (http://www.vsop.isas.ac.jp/apt/DefinitionAndAims.html). ... The Australia Telescope Compact Array, and Ceduna, Hartebeesthoek, Kashima, Mopra, Parkes, and Shanghai telescopes of the Asia-Pacific Telescope participated in these observations. ... In the absence of Tetsuo Sasao, Philip Edwards briefly described results of the APT 22 GHz observations conducted from October 1st to 5th, 1997. ...

... The TRACE images may be used without restrictions in publications of any kind. ... These two images, taken on 18 November 2000 at 15:54UT and 16:11UT, respectively, show such an event: the red circle in the image to the left shows a region where many loops are cooling, with bright loop tops (the intensity scales with the square root of the image to reduce the dynamic range). ... See also a collection of images related to the Sun, other cool stars, and solar-terrestrial effects . ... Images | ...

... Gallery . ... Comet Shoemaker-Levy 9 Impact Images . Sidebar Left . Sidebar Top . ... Title: Comet Shoemaker-Levy 9 Impact Images . Description: Comet Shoemaker-Levy 9 meets Jupiter - July 1994 . ... Owner: Gallery Administrator . ... 3.09, 3.28, 3.42 micron image after fragmentтАж . Views: 2399 . By: Gallery Administrator . 2.34 micron images imact sequence for fragmenтАж . ... 2.34 micron image of fragment D impact . ... Composite 3.42, 3.59, 3.99 micron image of poтАж . ...

Supernovae 2010jl in UGC 5189A . This page is devoted to information on Supernova 2010jl in UGC 5189A . ... Astronomy Magazine's Supernova SN 2010jl . ... Bad Astronomy's SN 2010 JL in weird UGC 5189 . SpaceBanter.com 2010jl post . Blogbaker's 2010jl post . Joseph Brimacombe widefield color image . ... 2010/11/04.50 . ... 2010/11/05.203 . ... Joseph Brimacombe . 2010/11/05.467 . ... mirror . ... JM Llapasset . ... 2011/01/15.160 . ... Back to Bright Supernovae - 2010 . ...

... Impact of Covariance Information on the Orientation Parameters Between Radio Source Position Catalogs, IVS 2012 General Meeting Proceedings, p.339­341 http://ivscc.gsfc.nasa.gov/publications/gm2012/sokolova.pdf Impact of Covariance Information on the Orientation Parameters Between Radio Source ... IVS Analysis Centers provide these catalogs in a standard IERS format, where together with radio source positions and other relevant information, RA/DE correlations are reported. ...