Next: Order Definition Up: Echelle Reduction Method Previous: Retrieving demonstration and . ... That is the mapping between the space wavelength, spectral order and the space sample x , line y in the raw image. ... Sections and describe the solution of this mapping. The second step in the reduction, described in Section , is to estimate the image background. ... In the rest of this Section the algorithms used in each step of the reduction are described. ...

... The GHRS has the usual components of an astronomical spectrograph: entrance apertures, a collimator, dispersers, camera mirrors, and detectors. ... The collimator and camera mirrors are unexceptional and need no further description here (see ``The HST Focal Plane and the GHRS Apertures'' on page 73 for details). ... The first two first-order gratings, G140L and G140M, have their spectra imaged by mirror Cam-A onto detector D1, which is optimized for the shortest wavelengths. ...

... This task calibrates the telemetered RGS pixel energies. ... The calibration consists of three corrective procedures performed in sequence: offset correction, gain correction, and CTI correction. ... The offset correction can use static calibration data from the CCF (one value per CCD and node by each RGS), but also dynamic offset data derived from the diagnostic images can be used for subtraction. ... Using any diagnostic data for derivation of one value per CCD and node (parameter withoffset ). ...

... Classes . ... casa::FuncExprData . ... Destructor. map< String , ExprOperator > & . ... const map< String , ExprOperator >& casa::FuncExprData::binary1 . ... const map< String , ExprOperator >& casa::FuncExprData::binary2 . ... const map< String , ExprOperator >& casa::FuncExprData::function . ... const map< String , ExprOperator >& casa::FuncExprData::special . ... const map< String , ExprOperator >& casa::FuncExprData::unary1 . ... const map< String , ExprOperator >& casa::FuncExprData::unary2 . ...

... This is possible at modest cost due to the low moments of inertia of the telescope and enclosure. ... This same performance will be achieved in higher winds when the telescope enclosure is facing away from the wind, or by using wind screens. ... The telescope system (MILT) will be remotely operable with an on-site operator's assistance by an astronomer located at one of the ARC member institutions. ... Mean Wind Speed . ... Offsets > 10 deg: 1 arc sec rms max . ... 5 sec max, tracking to tracking . ...

. This diagram illustrates how the definition of a pixel depends on the users distance from the viewing surface (paper or screen). The image depicts the user looking at two planes, one 28 inches (71 cm) from the user, the second 140 inches (3.5 m) from the user. An expanding cone is projected from the user's eye onto each plane. Where the cone strikes the first plane, the projected pixel is .28 mm high. Where the cone strikes the second plane, the projected pixel is 1.4mm high. Return to image.

Stellarium 0.12.3 . ... Classes . ... StelLocaleMgr Class Reference . Manage i18n operations such as message translation and date/time localization. ... The time display format. ... voidљ . ... QStringљ . getAppLanguage () const . Get the application language currently used for GUI etc. ... Get the format string which describes the current time format. ... Set the time format from a format string. ... Get the format string which describes the current date format. ... const QString &љ . ...

... Directives | ... Apache HTTP Server Version 2.4 . ... This document describes the terms that are used to describe each Apache configuration directive . ... Configuration files . ... This indicates where in the server's configuration files the directive is legal. ... A directive marked as being valid in this context may be used inside <Directory> , <Location> , <Files> , and <Proxy> containers in the server configuration files, subject to the restrictions outlined in Configuration Sections .htaccess ...

The ESO Very Large Telescope consists of an array of four 8-meter telescopes which can work independently or in combined mode. ... In such a mount the telescope tube moves around a horizontal axis called elevation axis. ... The telescope tube itself consists of a steel structure supporting at the bottom the primary mirror (M1) in its cell, and at the top the M2 Unit by means of metallic beams called "spiders". ... The VLT can operate in either Cassegrain, Nasmyth or Coud focus. ...

... They are concerned with Attitude Control System of the spacecraft, satellite visibility from tracking stations, limits on the satellite autonomous operations during the orbit, and needs for auxiliary operations with the spacecraft. ... Among the operational constraints the most important one is the number of programmed slews per orbit, which determines the maximum number of radio sources to be observed during one orbit. ... System temperature (K) . ... Progress of the RadioAstron Project in Pictures...

... The file names' construction . The flight (m) stage's file set . ... the orbital data used for the flight operation monthly (m) long-term planning, . ... The orbital calculations are based on the initial orbital data determined by KIAM RAN using the orbital radio- measurement treatment. The determined initial orbital data are presented as a state vector (satellite position and velocity) in the J2000 reference. ... Accept the file with extension '.bgr', where the Moscow time (MT=UT+3h) is used. ...