Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

... Telescopes, instruments and cameras are keenly affected by local weather and atmospheric conditions. The decision to open any telescope or have access to any instrument or camera is at the sole discretion of the on-duty observing specialist(s) at the time of your requested access. ... Specific parameters exist for access to APO telescopes, instruments, or cameras which protect our highly-sophisticated and sensitive equipment and provide safe work conditions for staff and visitors. ...

Peremennye Zvezdy ( Variable Stars ) 32 , No. ... We report on our photometric analysis of the poorly studied cataclysmic variable in Ophiuchus, 1RXS J174320.1-042953 (DDE 11). ... The long-term behavior of J1743-0429 shows that it is a probable magnetic cataclysmic variable (polar), with a large difference between its low and high states. The orbital period obtained from our observations is 0 0866, or 2 08, close to the lower boundary of the period gap of cataclysmic variables. ... Fig. ...

... Armagh Observatory, 29th July 2015: . The annual Perseid meteor shower is one of the best and most reliable meteor showers of the year. ... Meteors, which are sometimes called тАЬshooting starsтАЭ тАФ or тАЬfireballsтАЭ if very bright тАФ are produced by small dust particles called meteoroids, with sizes ranging from millimetres up to centimetres or more, as they collide with the EarthтАЩs atmosphere at speeds of typically several tens of kilometres a second, and burn up. ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Sky this Week . ... Astronomy for Kids . ... How did physicists measure the gravitational redshift of light? ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email...

... NASA's Hubble Space Telescope has provided a never-before-seen view of a warped disk flooded with a torrent of ultraviolet light from hot gas trapped around a suspected massive black hole. ... This composite image of the core of the galaxy was constructed by combining a visible light image taken with Hubble's Wide Field Planetary Camera 2 (WFPC2), with a separate image taken in ultraviolet light with the Faint Object Camera (FOC). ... The inset box shows Hubble Space Telescope's field of view. ...

The list below is a set of links to over one hundred different college-level astronomy courses, mostly at the "beginner" level. ... Astronomy Courses (Angelo State Univ.) ... Physics 100: Astronomy (Calif. ... Physics 116: Introduction to Astronomy (Emory Univ.) Astronomy Courses (Florida State Univ.) Physics 104: Astronomy (Gardner-Webb University) . ... Astronomy Courses (Iowa State Univ.) ... Astronomy Courses (Ohio State Univ.) ... Astronomy Courses (Pennsylvania State Univ.) ...

Astronomical Data Analysis Software and Systems XIII ASP Conference Series, Vol. ... 2003). ... At the time of writing the system contains 56106 light curves, each of them processed using three different sampling times (1, 630 and 5000 seconds). ... Search capabilities of the OMC Data Server. in form which permits to perform queries by ob ject name, coordinates, ob ject type, V-magnitude range, date of observation, number of points of the light curve and/or sampling time (see Figure 1). ...

The following page provides access to several SVM codes developed by us. ... Several our codes realizing some other exact and approximate methods are also available. The codes are provided by rather small (sorry) comments and test run results. ... Another page contains links to other collections of light scattering software (under construction). Our overview of the ranges of applicability of different codes is under preparation. ... Created by V.I. Last modified: 10/05/03, V.I. ...

... Classical nova V458 Vul (N Vul 2007 No.1) was detected as a supersoft X-ray source (SSS) by the Swift XRT several times in the time range between 2007 October 18 and 2008 June 18 (J. Drake et al., ... Our V photometry shows the plateau in the light curve continued since January till June 2008. ... The light decay by 0.05 mag/day suggests that plateau has finished in the middle of June. ... The light curve of V458 Vul folded with the period of 0.58946 day (top). ... View UBVRc light curves of V458...

ALBUM: Who's That Girl Artist: Madonna Year: 1987 Lyrics provided courtesy of Kenny Zalewski, zalewk@rpi.edu Songs on this album: Who's That Girl , by Madonna Causing A Commotion , by Madonna The Look Of Love , by Madonna 24 Hours, by Duncan Faure Step By Step, by Club Nouveau Turn It Up, by Michael Davidson Best Thing Ever, by Scritti Politti Can't Stop , by Madonna El Coco Loco (So So Bad), by Coati Mundi @SONG: Who's That ...

... Sternberg Astronomical Institute, Moscow State University, Moscow Union "Optic" . ... Ural State University, Kourovka . ... Irkutsk State University . ... The 2 first images in different polarizatios (Eeast-telescope and West-telescope) . ... West Time GRB Mag Error (hour) 1.02097639 17.93 0.22 1.07643278 17.43 0.09 1.13188834 17.78 0.14 1.18734417 18.03 0.19 1.24280056 17.87 0.15 1.29825584 17.58 0.10 1.35371584 17.94 0.12 . ... GCN 10076) . ... GCN 10048) by internet 3422 s after the GRB time. ...

Ground Support of RadioAstron . Control and Tracking Stations . RadioAstron satellite control (command transmission, telemetry, orbit measurements) will be conducted from Evpatoria and Bear Lake control stations. ... Coarse orbit measurements will be carried out from control stations. Each measurement takes ten minutes. ... Orbit measurements at tracking stations give only radial component of spacecraft velocity but the measurements are going continuously during observing sessions. ...

... Its main scientific objectives are: (1) to monitor the optical emission from the sources observed by the gamma- and X-ray instruments, measuring the time and intensity structure of the optical emission for comparison with variability at high energies, and (2) to provide the brightness and position of the optical counterpart of any gamma- or X-ray transient taking place within its field of view. ... With a field of view of 5 в5 OMC is able to monitor sources down to magnitude V = 18. ...

... Home Lectures Lecture Series 2011-2012 Lecture Series 2011-2012 ? тАЬA Ray of Light in a Sea of Dark (Matter)тАЭ ? Charles Keeton . ... Charles Keeton , associate professor of physics and astronomy at Rutgers University and faculty director of the Aresty Research Center for Undergraduates , will speak to the AAA Friday, March 2, on тАЬA Ray of Light in a Sea of Dark (Matter).тАЭ The free public lecture begins at 6:15 p.m. in the Kaufmann Theater of the€а American Museum of Natural History . ...

Measurement of Sky Brightness at the Iranian National Observatory Davoud Afshari1 and Sadollah Nasiri1,2 1Physics Department, Zanjan University, Zanjan 45195-313, Iran; Institute for Advanced studies in Basic Science (IASBS), Zanjan 45195-1159, Iran; Measurement of light pollution 2 Introduction Among 34 candidate sites at the central part of the country, 5 sites namely Garkesh (in Kashan ), Kolahbarfi(in Kashan ), Deynava (in ... One of these is light pollution. ...

EUV PHOTOMETERS PHEU . EUV photometers measure the emissions of the Earth’s ionosphere and geocorona in the Extreme UltraViolet range. ... In the case of spinning satellite is possible to get the whole picture of the emission distribution, eg. of Aurora borealis in EUV range.) Two or three photometers are proposed. ... Detectors: . Detector EUV-1 . ... Characteristics for EUV-1 and EUV-2 detectors : . ... The block of electronics . ... Total Mass (detectors and electronics) : cca 1.4 kg . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Planets . ... Earth Satellites . ... A Scorched World: too distant to image, Kepler-10b is depicted here by a NASA artist (Image credit: NASA/Kepler Mission/Dana Berry) . The Kepler satellite looks for planets passing between their parent star and Earth. ... Placed beside our homeworld, Kepler-10b would be about 40% wider than Earth. ... Possibly only occasional jagged islands of metal and rock break the monotony of its glowing lava oceans. ...

... 400mm f/2.8 Nikor lens: images the sky on the entrance slit. ... The optical system maintains image quality along the slit length so that each row of the image is a spectrum of that spatially selected region of the sky. 180mm f/2.8 Nikor lens: collimates the light from the slit. ... The auxiliary optical platform on WISPI now accomodates a short focal lens and a guiding/imaging video system that may use sub-pixel corrections to provide feedback to the tracking drive motors. ...

... Under certain conditions, like those in the nucleus of a QSO, all atoms can be made to emit light at particular wavelengths. ... If that source is approaching the observer, the wave is squashed up onto itself making the wavelength shorter. ... This is redshift. ... You can see how the section of the QSO spectrum which we observe changes with redshift. ... We then see how far we had to slide the observed spectrum along the scale to make it match and that is the objects redshift. ... The 2QZ team . ...