Classroom Activity: A Viewgraph Comet . ... This will simulate the Earth's orbit around the Sun. ... Draw several comets along the path with their tails pointing away from the Sun. ... You can create other viewgraphs that have a smaller scale and show several comet orbits or constellations. ... Show how the Earth's orbit is almost circular compared to the comet's. Explain that the Sun is at the focus of the orbits of the planets, asteroids, and comets. ... Actually, comets have two tails. ...

... May 13, 1997 . Optical Transient Near GRB970508 Shows Distant Redshift . ... Explanation: The GRB distance scale controversy may have just ended with a flash . ... Most importantly, continued scrutiny showed that this optical transient had absorption lines with a redshift of about 0.8 - the distance scale of galaxies and quasars . ... Above is a "negative" image of the GRB970508 field , located near the north celestial pole, taken hours after the initial flash of gamma rays. ... About APOD > . ...

polimplot -- Plot a polarization vector map . ... inpol = "" [name] . Input linear polarization image (in %) to plot. inpopa = "" [name] . Input image for position angle of linear polarization vectors (degrees). poi_err = "" [boolean] . ... Name of corresponding polarization position angle error image (degrees). ... This task is a flexible tool for plotting a polarization vector map from two images of the polarization and the position angle of the polarization vector. ...

Describes how spatial region boundaries are handled. The golden rule for spatial region filtering was first enunciated by Leon VanSpeybroeck in 1986: . ... With this in mind, the rules for determining whether a boundary image pixel or table row are assigned to a region are defined below. For image filtering, pixels whose center is inside the boundary are included. ... That is, an row is inside the boundary without regard to its integerized pixel value. ...

. The picture illustrates the new capabilities of Apertif. The circles show the location on the sky of the two pulsars detected simultaneously, separated from each other by about seven times the diameter of the full Moon. The Moon indicates the field of view of the old WSRT: it can detect sources only if they are closer to each other than a distance similar to the apparent size of the full Moon. The inset on the left shows the average time profile of the pulsars detected. Illustration: ASTRON

Next: MMDSL: a Multi-Mission Data Server at LAEFF . ... Laboratoire des Sciences de l'Image, de l'Informatique et de la T?l?detection, France . ... We present an example implementation of a data tree in the Astrophysical Virtual Observatory prototype tool. ... Here we provide a very brief outline of the image metadata description that forms the basis of this data access scheme, and show how the data tree is used in the AVO prototype to enable ``smart browsing'' and selection of data. ...

... Append the name of the output grid file. ... CYLINDRICAL PROJECTIONS: -Jc lon0 / lat0 / scale (Cassini) -Jj lon0 / scale (Miller) -Jm scale ( Mercator - Greenwich and Equator as origin) -Jm lon0 / lat0 / scale ( Mercator - Give meridian and standard parallel) -Joa lon0 / lat0 / azimuth / scale (Oblique Mercator - point and azimuth) -Job lon0 / lat0 / lon1 / lat1 / scale (Oblique Mercator - two points) -Joc lon0 / Je lon0 / lat0 / scale (Equidistant). ...

... Yerga Expedition . ... Novaya Yerga Expedition . ... I n 1662 a meteorite shower fell near the village of Novaya Yerga. ... In 2002, the Meteoritics Laboratory of the Vernadsky Institute of Geochemistry And Analytical Chemistry of the Russian Academy of Sciences (GEOKHI) organized an expedition to search for the location and any traces of the Novaya Yerga meteorite shower. ... After visiting the town of Kirillov, the expedition returned to Novaya Yerga, i.e. to near the village of Nekrasovo. ...

... astro-ph . ... A Catalog of almost 3900 variable stars . ... Properties of Dust Grains in Planetary Nebulae - I. The Ionized Region of NGC 6445 . ... A model of the ionized region is constructed, using the photo-ionization code CLOUDY 90.05. ... The most likely conclusion is that grains are residing inside the ionized region of NGC 6445 and that the low temperature and flux of the grain emission are caused by the low luminosity of the central star and the low optical depth of the grains. ...

... Club By-laws . ... Other Club Activities . ... Public Nights . ... Dr. James Green, NASA, Director Planetary Science will be our esteemed speaker on Tuesday, April 12, 2016 at 7:30 PM in Peyton Hall on the Princeton University campus. ... Our astronomers setup telescopes for public use at Communiversity in Princeton, Super Science Saturday at the NJ State Museum in Trenton and at various public events around Mercer County. ... Amateur Astronomers Association of Princeton, Inc., ...

... This page contains some of the best images taken by Mars Pathfinder. ... Sojourner Gets Her Rock This "movie" was generated from 23 separate frames taken by the Imager for Mars Pathfinder (IMP) and lasts approximately 8 seconds. ... Sojourner is visible in this image, one of the first taken by the deployed Imager for Mars Pathfinder (IMP) on Sol 3. ... Yogi, a rock taller than rover Sojourner, is the subject of this image, taken by the deployed Imager for Mars Pathfinder (IMP) on Sol 3. ... Mars . ...

... Astronomy news . ... Saturnian Moon Shows Evidence Of Ammonia . Data collected during two close flybys of Saturn's moon Enceladus by NASA's Cassini spacecraft add more fuel to the fire about the Saturnian ice world containing sub-surface liquid water. ... In space, the presence of ammonia provides strong evidence for the existence of at least some liquid water. How could ammonia equate to liquid water inside an ice-covered moon in one of the chillier neighborhoods of our solar system? ...

... From the chain visibility point of view, it is very recommended to look at the Javascript movies , especially if the frame rate can be not regulated in your MPEG player. ... The non-CH-associated large-scale chains visible on the SOHO/EIT images at three wavelengths of 171, 195 and 284 as well as on the MLSO/HAO He I 10830 spectroheliogram of December 16, 1997. ... The SOHO/EIT movies at 171 and 195 show the chain dynamics on June 1-3, 1998. ... Javascript movie (230 KB), SOHO/EIT, 171 . ...

... This program was created for correlating chosen regions in the series of fts images. ... Chosen regions' . ... In this section the program counts the integral for each region of the grid for each image. ... As a matter of fact, the integral is total brightness of the region and it is counted by 'int_tabulated' IDL function. ... In addition, the program will show the count of the regions which correlate with the corresponding region (the brighter region means the bigger count) and its contour. ...

... The size of a regular paper should not exceed 12 pages in the journal format. ... Keywords: journal, composites, nanostructures, abstract, illustrations. ... The main text The main text should be in Microsoft Word format. ... Illustration and Tables All illustrations and tables should be submitted as separate files. ... Examples of the graph formats in linear and log scales are given in Fig. 1 and Fig. 2, respectively. ... Formulas, to which there are references in the text, are to be numbered. ...

To the IUM main page . Our Web site is written for the most part in Russian. ... Those who cannot read Russian are referred to the English version of our page, but they should be warned that nothing but general information on IUM is to be found there. ... The rest of this text is for those who can read Russian but cannot make their Web browser show Cyrillic letters to them. An immense part of our Web page is lists of titles of courses read (or being read) at the Independent University. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Sun coming thru clouds forms beams of light (in dust in air?) ... Why does it look like that when the rays are supposed to be parallel and the sun 93M miles away? ... The rays really do appear to diverge: they are close together near the Sun, then spread out overhead. ... The rays as a set are parallel, but each ray is a little bit fan-shaped. ... 2008 Phil Plait. ...

... This description of Bridge World Standard, intended as a clarification of the items in the summary, was developed by Jim Loy. ... For the Summary itself, see Bridge World Standard Summary . ... Abbreviations that I have used: m = minor suit, M = major suit, x = any suit (as in 2x). ... Bridge World Standard 1994 . ... Game raise is slam try [example: 1NT-2H-2S-4S] [Use Texas with only game] . ... New-suit jump after single major raise [example: 1H-2H-3S] . ... Bridge World Standard 1984 Summary . ...

... A rough estimation is that in the United States there is one planetarium per 100,000 population, ranging in size from the Hayden Planetarium's 20-meter dome seating 430 people, to three-meter inflatable portable domes where children sit on the floor. ... Together dblo associates make a huge impact in the architecture, interior design and development arena in London. ... With the holidays around the corner what better way to spoil your family than with your very own private home cinema. ...