For historical reasons, it is useful to offer comparisons between the current WFPC2, and its predecessor WF/PC-1, which was returned to Earth in December 1993. Field format: WF/PC-1 contained 8 cameras and CCDs, each CCD having 800 x 800 pixels. ... Many differences derive from the fact that the WF/PC-1 CCDs were thinned, backside illuminated devices whereas the WFPC2 CCDs are thick, frontside illuminated devices. ... WFPC2 devices have much less CTE error, and hence no preflash is used. ...

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 . ...

... ALMA . ... Technical notes . ... ATM and AATM . What is ATM? ... Current version: V0.1 . ... ATM is a library of routines for modelling transmission of cm/mm/sub-mm wavelength radiation through the Earths atmosphere. ... AATM is a re-packaging of the version of ATM as used by the ALMA online calibration software "TelCal". ... Please note this is a BETA version . ... NEWS file extract: Version 0.08 ------------ UPSTREAM TRACKING: Synchronised with the current version of ATM in the ALMA CVS Trunk. ...

... The star formation rate (SFR) of the current SF episode can be estimated from the total H luminosity. ... For the derived total flux F (H )=5.8 erg s -1 cm -2 we obtain a total H luminosity of 10 39 erg s -1 . ... The total mass of ionized gas can be obtained from the average mass density inside the H II region and its volume. An average mass density corresponding to the average electron density of 1 cm -3 within a volume with a diameter of 0.5 kpc yields a total ionized gas mass of 10 6 . ...

Next: Future plans Up: Electronic database Previous: Electronic database . The JPDOC gives access to references to the papers, data files and links to the internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to the radio domain. ... The database also provides links to internet collections of optical data files and personal WWW pages with relevant software and includes some other useful information. ...

Next: Modes of Operation Up: CCD Scientific Performance Previous: Field of View . Thermal excitation of charge carriers from the valence to the conduction band creates a dark current signal which may vary with position in the array, and also has temporal shot noise variation. ... In a device devoid of localized defects which give rise to individual dark current spikes , most dark current arises from electrons generated at interface states at the surface. ...

... Observing . ... List of projects . ... The PPTA has the major goal of making a direct detection of low-frequency gravitational waves using pulsar timing observations. ... We provide below a summary of the research currently being carried out followed by possible future projects. Our Publications page contains a list of current publications that are based on PPTA data or research for the PPTA project. Reviews of the PPTA projects and goals were published by Hobbs (2005) and Manchester (2006). ...

... Charge Coupled Devices (CCD) are currently by far the most widely used type of detector in astronomy. ... After a brief introduction to the VLT Control System, the VLT CCD Detectors Control Software is presented. The VLT Control System is a distributed system consisting of a set of UNIX Workstations, dedicated to high level operations, such as coordination of sub-system activities and interface to the users, and VME-based Local Control Units (LCU), dedicated to the control of sub-systems hardware. ...

... 23 September 2004 - Telescope First Light! ... 30 July 2004 . ... NIC-FPS is an instrument combining the capabilities of a near-infrared imaging camera with a cryogenic Fabry-Perot etalon currently under development at the Center for Space Astrophysics and Space Astronomy , University of Colorado with support from Rice University , Ball Aerospace and the Astrophysical Research Consortium. It is scheduled to begin operations on the ARC 3.5m telescope at Apache Point Observatory in 2004. ...

... Space Research Institute . ... Launched in 2011. Hend (short for High Energy Neutron Detector) instrument onboard Mars Odyssey mission (NASA) to study Martian surface composition and to search for water ice on the surface and in the upper layer of the regolith in particular. ... Mars Express (ESA) mission for Mars remote sensing. ... BTN-M ?1 for BTN-Neutron experiment for fast and thermal neutron studies onboard Service Module within Russian Orbital Segment of International Space Station (ISS). ...

... What is the configuration of the device driver software? ... If the software you use doesn't adequately tell you what's wrong (or automatically configure it correctly) then you need to investigate how your hardware devices and their drivers are configured. ... Another problem is that when you view configuration messages on the screen, it's sometimes not clear whether the reported configuration is that of the device driver, the device hardware, or both. ...

Orbital data : INTERBALL AZ GSE and GSM cartesian coordinates, GSE cartesian velocity (once per 10 minutes). ... Magnetic field data from IMAP experiment. Magnetic fileld absolute value and magnetic field index (the difference between absolute value and model value), status flag. ... Counts of H+ and O+ ions are accumulated during one spin period by detectors D6 (antisunward looking), D8 (spin plane), D10 (sunward looking) of TRICS2 subsystem (1.0-30 keV). ... TRICS1, TRICS2, TRICS3 subsystems: . ...

Next: Date conversion functions Up: Command line procedures Previous: Analysis procedures Contents . list_names [, names _char ] List HDS objects at current level. Store in parameter, if given. list_tree List HDS tree beginning at current level. list_scans [, index ] List observed scans, stars, times, stations, and codes. If index is specified, list only these scan IDs. list_bgscans List stars and back ground scans. list_stars [, stars _char ] List stars present in currently loaded data. ...

. The following is a list of the currently installed versions of the CIMA. The links refer to the CIMA version log page . Normal: version 3.0 - this is the next version of CIMA which has become the new default version --- NOTE that this version uses a new syntax for command file observations, uses new configuration files and needs source files with full velocity information . Old: version 2.2 - this is the old version of CIMA You can return to the main CIMA page by clicking here .

... hstpolima: Reduce linear polarization data for HST instruments (currently FOC, NICMOS and WFPC2 are supported). ... Images for the three Stokes parameters (I,Q and U), the linear polarization and position angle and their error images are output. hstpolpoints: Reduce linear polarization data for HST instruments for a set of circular apertures. ... There is a web page http://www.stecf.org/software/impol/ briefly describing the package and giving example polarization maps for HST and model data. ...

The left mouse button controls the creation and manipulation of region markers or cursors. ... Text When a marker type of selected, new markers of that type can be created using the left mouse button. The current default marker type is displayed below the menu. ... Set Default Marker Name (and Color) . ... Reset the fix parameter state of currently existing markers to match the global state set by the -fix command switch or by the Edit Global Fix Params For New Markers option in the Markers menu. ...

... JavaScript 1.1: added current, next, and previous properties. ... To change a window's current URL without generating a history entry, you can use the Location.replace method. ... For example, if the history list contains three named entries, these entries are reflected as history[0] , history[1] , and history[2] . ... back . ... onClick="history.go('home.netscape.com')"> The following button navigates to the URL that is three entries backward in the history list: <P><INPUT TYPE="button" VALUE="Go" ...

Archive | Index | ... At the Core of M15 . A Giant Globular Cluster in M31 . Globular Cluster M5 . M15: A Great Globular Cluster . Millions of Stars in Omega Centauri . This index contains previous Astronomy Pictures of the Day (TM) sorted by subject and is updated monthly. Therefore, only APODs occurring before the beginning of this month are currently indexed. The chronological archive is completely current. ... NASA Technical Rep.: ...

. Other Relevant Links . Number counts have been illustrated earlier in the talk. QSO Clustering and Large-Scale Structure , Scott Croom et al . QSO Evolution and the Luminosity Function , B.J. Boyle et al . | Front page | . | << - Contamination | QSO close pairs - >> | . Robert J. Smith, ">rsmith@mso.anu.edu.au Last modified: Fri Sep 24 11:39:02 EST 1999 .

... Research . ... Independent University . ... Associate Professor , Department of Mathematics , National Research University Higher School of Economics , Moscow, Russia . ... Vice-President , Independent University of Moscow , Moscow, Russia . ... Research Fellow , Laboratory of Algebraic Geometry and its Applications , National Research University Higher School of Economics , Moscow, Russia . ... Sep. ... Specialist degree in Mathematics (M.Sc. equivalent), Independent University of Moscow , Russia ....