The nasa.gov site requires that JavaScripts be enabled in your browser. ... Contact NASA . ... The term "astronaut" derives from the Greek words meaning "space sailor," and refers to all who have been launched as crew members aboard NASA spacecraft bound for orbit and beyond. Since the inception of NASA's human space flight program, we have also maintained the term "astronaut" as the title for those selected to join the NASA corps of astronauts who make "space sailing" their career profession. ...

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. ...

STScI . Guidelines for Preparing Viewgraphs and Computer based Presentations to be used in an STScI Webcast . ... Us . ... To reach the largest possible audience with the greatest understanding of your material, ITSD has prepared a few guidelines for preparing viewgraphs and computer based presentations. ... Avoid using colors that appear at the same level of brightness (e.g., red text on a blue background), viewgraphs appear quite different on a projected screen compared to the computer. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ... Next: Step 3: Postprocessing to Up: How Pieflag works Previous: Step 1: Amplitude-based flagging . ...

... Up: Data Analysis Applications . ... Our main goals are: 1) to take advantage of the full capabilities of the AXAF, we intend to provide a more sophisticated modeling capability (i.e., models that are f ( x , y , E , t ), models to simulate the response of AXAF instruments, and models that enable ``joint-mode'' fitting, i.e., combined spatial-spectral or spectral-temporal fitting); and 2) to provide users with a wide variety of models, optimization methods, and fit statistics. ... Multiple data sets...

... SQUID Amplifiers. ... One of the best candidates for second stage amplifier of cryogenic high-sensitive Terahertz receiver is a Superconducting Quantum Interferometer (SQUID). ... Appl. ... A.Kalaboukhov, M.Tarasov, A.Lohmus, Z.Ivanov, O.Snigirev, Properties of a high-Tc dc SQUID radiofrequency amplifier, IEEE Trans. ... M.Tarasov, A.Kalabukhov, O.Snigirev, E.Stepantsov, Z.Ivanov, O.Mukhanov, 'Radio frequency amplifier based on high temperature superconducting dc SQUID', Proc. 85th Int. Supercond. ...

... Corporate Partners Rock Our Cosmos! Current Partners . ... In addition to Sky & Telescope and SkyandTelescope.com, the comany publishes Night Sky, a bimonthly magazine for beginning astronomers, an annual magazine called SkyWatch, an annual magazine called Beautiful Universe, as well as books, star atlases, posters, prints, globes, and other fine astronomy products. ... We thank our Corporate Affiliates for their annual investment in partnering with the ASP to improve astronomy education. ...

Prof. Lewalle has two major research interests: the application of multiresolution analysis to engineering systems, and the theory and modeling of complex flows . ... The modeling of transitional, turbulent and/or two-phase flows presents opportunities to apply these ideas to practical problems. ... Flows in gas turbines . ... Jacques Lewalle, jlewalle@syr.edu ...

... Research . ... Past and present projects and other research activities . ... These projects range from: the end-to-end systems modelling, design and commissioning of an optical to near-infra-red stellar coronagraph at the William Herschel Telescope, a European Space Agency design study into fold-out large aperture space telescopes, prototyping 'Smart' X-ray mirrors for next generation X-ray telescopes and R into future adaptive optics. ... OSCA - an Optimised Stellar Coronagraph for Adaptive optics ...

Marses Instrument . ... Currently we use a Tem-fast 48 sounding instrument that is based on time domain electromagnetic sounding technology. ... Areas of application are following: . ... hidrogeological research, . ... Despite many competitors' instruments with similar areas of application, Tem-fast 48 has reasonable advantages among small depth sounding devices. ... The Tem-fast 48 sounding instrument consists of following devices: . ... The block diagram of the sounding instrument is outlined below. ...

... Credit: Thierry Lombry Explanation: Eris , a dwarf planet currently orbiting the Sun at about twice Pluto's distance, has been measured to have about 27 percent more mass than Pluto. The mass was calculated by timing the orbit of Eris' moon Dysnomia . Images taken with a ground-based Keck telescope , when combined with existing images taken by Hubble Space Telescope , show that Dysnomia has a nearly circular orbit lasting about 16 days. ... Publications with keywords: Pluto - dwarf planet . ...

... During a magnetospheric substorm the cross-tail current is disrupted (e.g., Fairfield and Ness, 1970). A current system called the substorm current wedge (SCW; Atkinson, 1967; McPherron et al., 1973) is formed as this current is diverted through a circuit consisting of earthward (downward) field-aligned currents (FACs) on the eastern side of the wedge, a westward auroral electrojet in the ionosphere , and tailward (upward) FACs on the western side of the wedge. ... Res. ... Geophys. ...

... 2002 August 8 . Ancient Volcanos of Mars . Credit: Malin Space Science Systems , MOC , MGS , JPL , NASA . Explanation: Findings of ancient martian microbial fossils in meteorites and liquid water related features on Mars' surface are currently controversial issues. ... This synthetic color picture recorded in March by the Mars Global Surveyor spacecraft shows two of them, Ceraunius Tholus (leftmost) and Uranius Tholus. ... About APOD | ... NASA Technical Rep.: ...

Higher intensity beamlines at synchrotron sources have driven the development of new x-ray sensitive detectors with enhanced performance capabilities for the collection of macromolecular diffraction data. ... To address this, a new integrating detector based upon a silicon chip charge-coupled device, or CCD, has been developed and successfully applied to the collection of macromolecular diffraction data at CHESS. ... Photograph of the CCD detector in place at the CHESS A1 station. ... CHESS Home Page ...

Download 1.1 Beta Now! ... Separate object manipulation mode added (also still available with Control Key). ... Tom's TkDraw is currently in beta release. It is my own personal drawing program and original Tcl/Tk project which I started more than ten years ago. ... Limited support for images was just added, and is great for tracing an image, or adding some annotations to an image (for instance drawing a route onto a map without actually altering the map image). drag, reshape, and resize objects . ...

Подписка на рассылку обзоров astro-ph на Subscribe.Ru . ... Предыдущий выпуск (N335) . ... Обсудить на форуме Scientific.RU . ... Подписка на рассылку обзоров на Subscribe.Ru . Обзоры препринтов astro-ph . ... Собственно обзоры препринтов. ... Ранее обзоры также были на Астронете и на Scientific.Ru . ... АНКи доступны на Астронете , а с 2006 по 2008 г. также на сайте Элементы.Ру . ... Ранее они также размещались на сайте Астронет и в архиве моих обозрений (кодировка KOI8) на сайте Scientific.Ru . ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

... Tonight's Sky . ... Sky this Month . ... space physics . ... The Sky This Week: April 1 - 10 . ... Sky this Week . ... Sky Events . Get to Know the Night Sky . Tour the Deep Sky . Sky Guide . ... Observing springtime deep-sky objects with a large telescope . ... Johns Hopkins University Applied Physics Lab, Laurel, Maryland . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... The OM frames currently used in UBV calibration: Field/Filter u b v EXO 0748-67 1 2 5 Abell 2690 1 1 1 BPM 16274 1 1 1 G158-100 1 1 1 The eld GD153 is reduced but not included yet. ... Allow for a circular aperture. The user should be able to specify a circular aperture of a given raduis. ... If non-default radius is chosen the task must scale the ux measured within this aperture to the default aperture using the information about the PSF. ... At the moment, the theoretical formula is being used. ...

As it proposed by the Statutes/Regulations of the International Astronomy Olympiad, the first part of preparing application to participate in the coming IAO is presenting of a short report of National Astronomy Olympiad of the current year for the Advisory Committee. ... Date of receiving report from the country . ... July 18 - August 7 . ... August 31 . ... Date of receiving draft report (or not full report) . ... Date of receiving official application . ... Done after receiving ANRAO application) . ...