... sensitivity (esensitivity-1.8) [xmmsas_20060628_1801-7.0.0] ... source . The detection box usually excludes a significant portion of the Point Spread Function or PSF of the source... images. Note that, although the name eboxdetect starts with an `e', the detection stage is not EPIC- nor even XMM-specific. ... This row represents more or less the average of the column values from the individual bands, although columns such as SCTS are simply summed to give the summary-row value. ...

... A hundred years later, a handful of Tunguska-sized asteroids have been spotted by telescopes, but most remain unseen. The asteroid designated 2008 TC3 , which made the news on October 6th before colliding with the Earth on October 7th was too small to constitute a part of the "Earth impact hazard". ... 2008 TC3, for example, finally exploded in the atmosphere above Sudan . ... Wednesday, 8 October 2008 01:15 . International Year of Astronomy, Ireland National Node . ...

Next: Discussion Up: Adaptive Regularized Restoration Algorithms Previous: Iterative Image Restoration . ... Fig. 1 shows the original blurred image and the Richardson-Lucy restoration. Fig. 2 shows the restored result using the generalized iterative adaptive algorithm and the frequency adaptive algorithm. ... The graph for the Richardson-Lucy implementation is seen in Fig. 4, the spatial iterative adaptive algorithm's graph is seen in Fig. 5, and the frequency adaptive algorithm's is seen in Fig. ...

lsst.coordConv   unknown . ... Classes . ... All   Classes   Namespaces   Files   Functions   Variables   Typedefs   Enumerations   Enumerator   Pages . coordConv: Astronomical Coordinate Conversions . The coordConv package provides the following classes and functions. ... Coord : represents a position on the sky, with proper motion and radial velocity; provides easy access to spherical and cartesian position. ... Position conversion functions: . ... Time conversion functions: . ...

... double comedi_to_phys (lsampl_t data, comedi_range * range, lsampl_t maxdata); . Converts data given in sample values (lsampl_t, between 0 and maxdata) into physical units (double). The parameter range represents the conversion information to use, and the parameter maxdata represents the maximum possible data value for the channel that the data was read. Conversion of endpoint sample values, that is, sample values equal to 0 or maxdata, is affected by the Comedilib out-of-range behavior. ...

... We describe a new library (AST) which provides a flexible high-level programming interface for handling world coordinate systems in astronomy and for producing graphical output. ... Relationships between coordinate systems are represented within AST by objects called Mappings. ... While Mappings represent the relationships between coordinate systems, the coordinate systems themselves are represented by objects called Frames. ... Like all objects, a Frame also provides methods. ...

... Open clusters NGC 869 and NGC 884, however, are doubly impressive. Also known as "h and chi Persei", this unusual double cluster, shown above, is bright enough to be seen from a dark location without even binoculars. ... A Bucket Wheel Excavator on Earth . ... Cradled in cosmic dust and glowing hydrogen, stellar nurseries in Orion the Hunter lie at the edge of a giant molecular cloud some 1,500 light-years away. ... Venus Just After Sunset . ... Venus will set only slowly as the Earth turns. ...

... We can help students grasp the significance of Hubble's extremely keen eye, and learn a bit about angles and math in the process, with the following in-class activity. ... Looking through binoculars or telescopes allows us to magnify a small section of the sky. To measure sizes or distances in that small section, astronomers divide a degree into 60 smaller pieces called arcminutes, and further subdivide minutes into 60 smaller sections called arcseconds. ... 30 feet = . ... 36 seconds . ...

... Duchamp | ... Top | Duchamp is a solution to this problem of three-dimensional source finding. ... A list of the detections and their properties, as well as the input parameters that were used. [text file] . ... It can be downloaded in source format, in a gzipped tar archive. ... Changes from the previous version can be seen here (this file is included in the tar archive), while the archive files and documentation from the previous release versions are here , if you are really interested. ...

... All Sky Survey 2. Galaxy Environment Survey 3. ... Deep Strip Survey 5. Very Deep Survey Proposed Surveys 1. ... Very Deep Survey Galaxies and Environment ЇExamine the properties of galaxies w/i a variety of environments ЇIncludes groups, clusters, and isolated galaxies ЇHIMF to =5x106 Mo within groups ЇDetect HVCs with v=25 km/s Galaxies and Environment Regions to be studied: ЇVirgo Cluster ЇCanes Venatici ЇAround large, local galaxies ЇAround dwarf groups Galaxies and ...

... A tutorial on multispectral imaging of paintings using the Mona Lisa as a case study . ... Conclusions: In this article, we have presented a tutorial description of the multispectral acquisition of images from a signal processing point of view. ... I wonder if there?s literature in astronomy matching this tutorial from which we may expand and improve current astronomical photometry processes by adopting strategies developed by more populated signal/image processing engineers and statisticians. ...

The central velocity dispersion represents the internal motions of the stars along a column crossing the center of a galaxy or star cluster. ... The catalogue of collected velocity dispersions may be accessed in HyperLeda. vdis is the velocity dispersion given in km/s. The velocity dispersion gives to some approximation the scale for the specific kinetic energy contained in in un-ordered motions and combined with the velocity of rotation it may give an estimate of the specific kinetic energy. ...

... Representing Coordinate Systems (Frames) While Mappings represent the relationships between coordinate systems, the coordinate systems themselves are represented by objects called Frames. ... A Plot's base Frame corresponds with the native coordinates of the underlying graphics system. Plotting operations are specified, using AST Plot methods, in physical coordinates which correspond with the Plot's current Frame (typically this might be a celestial coordinate system). ...

... NASA U.S. Spacesuit Knowledge Capture . ... During the program?s existence, more than 65 seminars have captured spacesuit history and knowledge; those that are available at this site have been approved for public release. For questions about the program or presentations, please contact: cinda.chullen-1@nasa.gov or vladenka.r.oliva@nasa.gov . The following presentations consist of video recordings (MPEG-4 and Ogg), transcripts (TXT),and accompanying slides and/or information (PDF). ...

... Public . ... Science Users Information > Science Publications > Science Announcements . ... Public Surveys . ... Published: 24 Feb 2014 . ... The Public ESO Spectroscopic Survey of Transient Objects ( PESSTO ) is one of the two on-going ESO public spectroscopic surveys . ... The first public data release ( DR1 ) of the VIDEO programme via the ESO Science Archive Facility, contained 97 individual (i.e. single-OB) tile images in the VIDEO-XMM3 field and their associated single-band source lists. ...

... Educational programs (English) . Educational programs (Russian) . ... Pre-university education . ... SSAU History . SSAU roadmap . ... The International Educational Exhibition AULA-2015 was held in Madrid from the 4th to the 8th of March. ... Samara State Aerospace University named after academician S. P. Korolev was represented at the exhibition by Ilya Kudryavtsev, Dean of the Faculty of Radio Engineering and Olga Klenkina, Assistant Professor of the Department of Social Systems and Law. ...

Each point in this graph represents one star in NGC 2808. The vertical axis represents the brightness (as measured through Hubble's near-infrared F814W filter) of the stars (the brightest stars near the top). The horizontal axis represents the colours of the stars, with bluer stars to the left and redder to the right (blue magnitude minus near-infrared magnitude). ...

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Estimating the NEO Population and Impact Risk: Past, Present and Future . ... Since most of the risk resides in the largest impactors, finding that fraction of the largest bodies, and that none of them has a significant chance of impacting in the next century or so, "retires" more than 90 % of the impact risk, including most of the risk of a globally catastrophic impact event. ... In the mid-size range, from ~150 m to ~1 km, the main risk is from tsunami generated by an ocean impact. ...

... ALMA has the potential to detect and resolve CO rotational line emission in debris disks, potentially providing key information to determine its provenance. " " (e.g. LTE, CO/H2 abundance ratio) do not necessarily apply in low gas density environments such as debris disks, and can lead to orders of magnitude errors in CO mass estimations. The 3 upper limit on the total CO mass for the Fomalhaut system is of 5.8 x 10-5 Mearth. ... Different colours represent different gas kinetic temperatures. ...