Astronomy Picture of the Day . An Airglow Fan from Lake to Sky . ... 26.01.2016 . ... Credit Copyright: Dave Lane ; Rollover Annotation: Judy Schmidt Explanation: Why would the sky look like a giant fan? Airglow . ... The unusual pattern was created by atmospheric gravity waves , ripples of alternating air pressure that can grow with height as the air thins, in this case about 90 kilometers up . ... January . ... January 2016 . ... NASA Web Site Statements, Warnings, and Disclaimers . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2014 September 1 . Airglow Ripples over Tibet . ... Explanation: Why would the sky look like a giant target? Airglow. Following a giant thunderstorm over Bangladesh in late April, giant circular ripples of glowing air appeared over Tibet , China , as pictured above . ... Now Available: APOD 2015 Wall Calendars . ... About APOD | ...

Scott's Little Corner of the Web . Welcome to my alternative page.. ... You might know me as Szyzyg, my net-pseudonym which I've adopted to avoid those nasty 'name already taken' messages. ... The Music Collection Page , in hte past this used to update automatically to tell you what I was listening to - but it only worked for CD's played on my computer :-( - Instead I've been hacking around with myplay.com and you can now use their servers to listen to some of my selections . ... Szyzyg FAQ . ...

... The State that has the highest rate of usage of ethanol as an alternative fuel . ... The last time the Oregon Ducks beat UCLA in basketball . The participants and score of the 1980 Rose Bowl . ... An Image of Issac Newton . ... The second highest paid player in the NBA last season . ... A map of the dams that comprise the British Columbia Hydropower System . ... The current freeway traffic flow in Seattle Washington . An image of a 1966 Shelby (Mustang) . ... Dr DarkMatter's Home Page . ...

... This calibration approach is recommended when dealing with high frequency data from the old ATCA correlator, especially at 3mm wavelengths. ... The approach described here exploits the dual frequency bands that were available with the old correlator. ... Rather the current approach assumes that you have a single Miriad dataset containing bandpass calibrator, phase calibrator, flux density calibrator and program source. ... MFCAL . ... Input multi-source, dual-band dataset. select=source(1921-293) . ...

... 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. ...

. This is the CIMA alternative drift map menu: . The following is the on-line help page for alternative drift map: . You can return to the main CIMA page by clicking here .

Target Acquisition Reference Information . Figure 7.1 on page 88 shows mean predicted count rates as a function of (B - V) 0 color for the four acquisition mirrors. Also shown are the fits to the predicted count rates for different amounts of reddening. ... You can estimate target acquisition count rates using the plots instead of Table 7.1 on page 92 : . ... Read from the Figures (depending on the mirror used) the predicted count rate. ...

Next: Sky Subtraction Up: Construction of Flat Previous: Standard construction . For a number of projects where very deep integrations and accurate flat fields are required, and the targets are point sources or much smaller than the frame size, the sky background itself can be used to calculate the flat field. ... Use STATISTICS/IMAGE to calculate the image median, and COMPUTE/IMAGE to divide by this to get the normalised flat field. ...

... The parameter pgdev allows the user to specify a pgplot device, but, in contrast to the pgplot standard, the file name should not be included, but instead supplied via the parameter plotfile . ... To write a colour postscript file called op.ps: pgdev=/cps plotfile=op.ps . However note that at present, if a colour postscript device ( pgdev = `/cps'), a fits file ( pgdev = `/fits') or a ppm file ( pgdev = `/ppm') are selected, the task in fact bypasses pgplot and writes the postscript file directly. ...

... galaxies . ... Hubble rules out one alternative to dark energy . ... Astronomers using NASA's Hubble Space Telescope have ruled out an alternate theory on the nature of dark energy after recalculating the expansion rate of the universe to unprecedented accuracy. ... The Hubble observations were conducted by the Supernova Ho for the Equation of State (SHOES) team that works to refine the accuracy of the Hubble constant to a precision that allows for a better characterization of dark energy's behavior...

Blackholes Forum Message . Forums: . ... Alternative Idea . ... With the proposal of exotic super dense entities like quark stars and others including black holes, matter on the atomic level can, and most likely does, break down to its most simplist building blocks (photons, leptons, quarks, etc). ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

. Sergei and keyboard, photo by A.Yuferov .

... This chapter documents all the JavaScript objects, along with their methods and properties. ... Full entries for each object appear in alphabetical order; properties and functions not associated with any object appear in Chapter 2, "Top-Level Properties and Functions." ... Tables included in the description of each object summarize the object's methods and properties. Full entries for an object's methods and properties appear in alphabetical order after the object's entry. ...

... Print Mixed messages with work in progress about the universe Simon Grose DISRUPTIVE alternative views that anger a current orthodoxy, leave their proponents ostracised and intrigue the masses are part and parcel of science. ... Another correct alternative theory earned Western Australia's Barry Marshall and Robin Warren a Nobel Prize in 2005. ... Scepticism about global warming being caused by our fossil-fuelled emissions is headed the same way, but it's a journey yet to be completed. ...

... LWN.net Weekly Edition for March 18, 2004 . ... LWN.net FAQ . ... This article is part of the LWN Porting Drivers to 2.6 series . Completions are a simple synchronization mechanism that is preferable to sleeping and waking up in some situations. ... When your driver begins some process whose completion must be waited for, it's simply a matter of passing your completion event to wait_for_completion() : . ... void complete(struct completion *comp); void complete_all(struct completion *comp); . ...

... М: ст.м."Медведково" - Мытищинская ярмарка - расписание . ... 443 (полуэкспресс, бывш. 343к ) - 8руб. ст.м."Алтуфьево" - платф. ... Долгопрудная - Спортивная - 8руб.; по городу Долгопрудному 3руб. ст.м."Домодедовская" - а/п Домодедово - 20руб. ... 313 платф. ... Расторгуево до п-ки) - 4руб. 367 (*) - до Молокова - 7руб., до пос. Володарского - 10руб., по городу - 3руб. 368к (*): платф. ... ст.м."Молодежная" - Барвиха (N101) - 10руб. ст.м."Новогиреево" - г. Балашиха - 16руб. (по городу 6руб.) . ...

... Archives . ... Statistically speaking, ?false sources? are generally in the domain of Type II Type I errors, defined by the probability of detecting a signal where there is none. ... More than 2.3% of the sources are flagged as spurious. ... Type II error is claiming no signal when there is signal (failing to reject the null hypothesis when the alternative is true). Type I error is rejecting the null hypothesis when the null is true, i.e. detecting signal under no signal. ... Chandra Blog . ...

... File view and tree view . ... Show (expand) directory tree starting from that point (the sign appears near directory name). ... Alternative way is to click on a [+] sign which appears near directory names throughout the archive (it will bring the tree into view from that directory). ... E.g., searching for "nftp" will find "nftp103.zip", "nftp/readme" and so on. ... nftp*" will find all files (NOT directories) which have the characters "nftp" in their names, including "nftp103.zip" and "about.nftp";...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Moon . ... Space Flight . Human Exploration . Robot Exploration . ... Science Fiction . UFOs and Fringe Science . ... December . ... Posted on December 14, 2010 | ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ... Subscribe to Astronotes . ... Copyright Armagh Planetarium 2014 All Rights Reserved. ...