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... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2013 November 12 . The Unexpected Tails of Asteroid P5 . Image Credit: NASA , ESA , and D. Jewitt ( UCLA ) et al. Explanation: What is happening to asteroid P/2013 P5? ... Were the main belt asteroid struck by a large meteor, it would be expected to sport a single dust tail. ... About APOD | ... A service of: ASD at NASA / GSFC . ...

... Analysis of in-orbit data closely follow the CSL data analysis. Stars with known astrometric positions are matched with their image centroids. ... The measured position, the expected position and the offset between the measured and expected positions are calculated and written into a file. ... select catalogued positions for different observations/pointings (e.g. positions of objects in photometric sequence) . ... The new distortion map was generated from in-flight observations of the G153 field. ...

... The Unexpected Tails of Asteroid P5 . ... 12.11.2013 . ... Credit Copyright: NASA , ESA , and D. Jewitt ( UCLA ) et al. Explanation: What is happening to asteroid P/2013 P5? ... For reasons unknown, the asteroid is now sporting not one but six discernible tails. ... Were the main belt asteroid struck by a large meteor, it would be expected to sport a single dust tail. ... Publications with keywords: asteroid . Publications with words: asteroid . ... Asteroid 2012 DA14 Passes the Earth . ...

... This is a personal project collecting and documenting early images of Harvard College Observatory, focusing on the site at Observatory Hill (previously Summer House Hill). ... This page shows a list of all images tagged with "Leon Campbell". [link] 1929/12/31 Observatory Pinafore Cast and Crew . The Cast and Crew of the Observatory Pinafore . ... Use/Copyright: Copyright held by Charles Reynes, used here with permission . link] 1929/12/31 Observatory Pinafore Curtain Call . ...

Next: Context Levels Up: MIDAS Command Language Previous: Interrupting Procedures . ... In MIDAS, the ENTRY command defines entry points for different procedures in the same file. These individual procedures are executed by specifying also their entry point besides the file name in the `@@' command. ... DEFINE/PARAM P1 11 NUMBER "Enter input number: " . DEFINE/MAXPAR 1 ! only one parameter expected . ... DEFINE/PARAM P1 spiral IMA "Enter input image: " . ... DEFINE/LOCAL LOOP/I/1/1 0 . ...

... Current APO Weather . ... Search Site . ... Information for New Users . ... Technical Staff pages . Night Logs and Mailing Lists (maintained by APO) . ... Technical Documents and Database Search . ... Observer's Documentation and Procedures . ... Problem Reporting and APO Technical Documents Database Search . ... APO Drawing/Document Management Procedures . ... APO Technical Documents Database Search . Home Astrophysical Research Consortium . ... Mail Lists (maintained by APO) . ...

... December 30, 1998 . Supernova 1994D and the Unexpected Universe . Credit: High-Z Supernova Search Team , HST , NASA . Explanation: Far away, long ago, a star exploded. ... Supernova 1994D was not of interest for how different it was, but rather for how similar it was to other supernovae . ... The large number and great distances to supernovae measured in 1998 have been interpreted as indicating that we live in a previously unexpected universe . ... About APOD > . ... NASA Technical Rep.: ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... September Perseid meteors captured by the . ... Its occurrence provides astronomers with interesting new data about the hidden trails of meteoroids тАФ small bodies ranging in size from fine dust particles to objects of marble-size and larger тАФ in the solar system and their supposed sources: comets and asteroids passing through the inner solar system. ... The particular comet that created the September Perseids is unknown...

Astronomy Discussion Forums . ... I Expected More Sense Than That. ... Post Message | ... Posted by Richard D. Stafford, Ph.D. on November 8, 2002 04:14:05 UTC . ... You are missing the point - harvey1 - November 8, 2002 - 13:10 UTC . I hope Stafford doesn't mind my intruding his forum - mrsouza - November 8, 2002 - 14:55 UTC . ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... There is one record per exposure. ... Field dataset_ name date_obs dec_targ dec_v1 equinox expend expflag expstart exptime fgslock instrume linenum monangl mtflag npdectrg npratrg observtn ... progrmid proposid ra_targ ra_v1 seqline seqname short_pep_expo sun_alt sunangle surfaltd surflatd surflong targname time_obs tuple_id Contents Name of the dataset UT date of the start of the observation (dd/mm/yy) Declination of target ( degrees ) Declination of telescope's V1 axis ( ...

... User Guide ] Task: mfboot Purpose: Set the flux scale of a visibility dataset. Categories: calibration MFBOOT is a MIRIAD program that corrects the flux scale in visibility datasets. In doing this, it assumes that the flux density scale is out by a constant scale factor. ... Key: vis Input visibility datasets. ... Key: mode MFBOOT can process the data in one of three modes: "triple", "scalar" and "vector". ... In "triple" mode, MFBOOT compares the triple product of the data and model. ...

... The standard science quicklook processing produces over a dozen sky maps at each downlink, and these maps are automatically searched for potential transient point sources. ... We have found that a heuristic modification of a formula derived by Li & Ma (1983) provides reasonably accurate estimates of p -values for point source detections even for very low p -value detections. ... Case 1u. The most straightforward approach uses the signal , where . ... To get a p -value, use . ...

... These are just the bare bones--just three basic ideas and rules for handling relations ("equations") involving unknown quantities whose values you are trying to find. In most calculations you try to find a number . ... To get a solution, one must replace the given equation (or equations) with others, containing the same information but cleaner in appearance. ... If you have an equation and modify both its sides in exactly the same way, what you get is also a valid equation. ...

Perhaps the greatest theoretical achievement of physics in the 19th century was the discovery of electromagnetic waves. ... It is possible to use this to define a unit of electric charge, as the charge which repels a similar charge at a distance of, say, 1 meter, with a force of unit strength (actual formulas make this precise). ... But "field" originally only meant the force a magnet or an electric charge could expect at a point in space, if it were placed there. ...

SINGULAR POINTS IN THE SOLAR CHROMOSPHERE . ... In the structure of the solar chromosphere, containing information on the configuration of the magnetic field, we have found and identified all the main types of the singular points ( see Fig. 1 ), which are known as inherent features of the 2-D vector field. ... The main types of the singular points are the node, the focus, the center, and the saddle. ... Singular point of the focus type in the solar chromosphere. ...

Documentation for Delay Line Final Design Review - 12 Feb 2008 Notes: Anything marked in Status as [TBU] is definitely `To Be Updated' `Expected Date' refers to the expected date of release where this is likely to be different from the due date. ... TBU] INT-406-VEN-0112 MF/RCB/DMAW/EBS 22 Jan 08 22 Jan 08 Released. ... MF/XS/DMAW MF MF MF MF/XS/DMAW 22 Jan 08 29 Jan 08 Yet to be drafted 22 Jan 08 22 Jan 08 Yet to be drafted 22 Jan 08 22 Jan 08 Released. ... Document No. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Have you ever looked at pictures of Saturn's rings and noticed what look like gaps in the rings? ... Gian Domenico Cassini discovered a large gap in Saturn's rings in 1675. Later, an astronomer named Encke discovered a smaller gap near the edge of the rings. ... It was found long ago that an orbit in the Cassini Division, as the large gap is named, has a period almost exactly one-half that of one of Saturn's moons named Mimas. ... 2008 Phil Plait. ...

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . ... OAO RSC "Energia" . ... Company's History . ... History . Brief History of Rocket and Space Technology . ... Flights Chronology . ... Project History . ISS Russian Segment . Steps of ISS Assembly . Spaceflights Chronology . Chronology of Extravehicular Activity . ISS 45/46 . ... Rocket Space Complexes . ... Launches Chronology . ... Automatic Space Systems . ... HISTORY . ... 2015 JSC "S.P. Korolev RSC "Energia" . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Moon . ... Space Flight . ... Science Fiction . UFOs and Fringe Science . Monthly Sky Notes . ... NASA's Cassini spacecraft obtained this image of Saturn's moon Helene on June 18, 2011. Image credit: NASA/JPL-Caltech/Space Science Institute) . ... Your email address will not be published. ... Email * . ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...