. This diagram shows a small table with three transparent cells and illustrates how their final background is determined. The table consists of two rows. Four (labeled) cells lie in the first row, but the second cell spans the first and second row. The first, third, and fourth cells of the second row are "empty". Each non-empty cell has a red background and a double black border. Each empty cell has the table's background color (specified as #ff0) as its own. Return to image.

... Here we address the issue of how to determine what calibration files make up the current calibration file for a given observation time. Each calibration file has a validity start date and a validity end date. ... In the simplest case (no end of validity date), a new version of the calibration file -- call it , will have and (figure 1 ). ... Within this scheme, at any time the applicable issue of the calibration file is obtained by selecting among all files the one with the higher issue number. ...

... 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. ...

Next: The Echelle Relation Up: Wavelength Calibration Previous: Wavelength Calibration . A preliminary step to the wavelength calibration consists of extracting the orders of the WLC image which can then be used to determine the dispersion relation in two steps: . ... Both methods are based on the echelle relation and therefore are not applicable if the disperser is not an echelle grating, as it is the case for EFOSC which involves a grism disperser. ...

... 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. ...

Orbit . ... The orbit of the RadioAstron provides four types of study: . rough images of radio sources with ultra-high angular resolution, using all baselines up to the radius of the apogee, that is much larger than Earth diameter; . ... high quality imaging of radio sources, with moderate resolution, by observing either with small projected base lines Earth-spacecraft, i.e. close to the orbital plane, or near the perigee. ... high accuracy orbit determination. ... Space Radio Telescope . ...

... The program begins with a residential summer institute at the Arecibo Observatory. ... The summer program will introduce the conceptual base (atmosphere science, geology), and provide the hands-on activities with the technology and equipment that will be used to carry out the research projects. At the end of the year, participants will report their findings to colleagues and mentors in a geoscience congress that will be organized at the Arecibo Observatory. ... Arecibo Geoscience Congress . ...

tranback -- Transform an X,Y position from output to input pixel position using the same conventions as drizzle tranback xout yout . xout = 400 [real] . ... The X dimension of the input image (this is used to determine the centre which is the origin of the transformations). (nyin = 800) [real] . ... If "output" the input image center is mapped to the center of the output grid, rotated about that center and then shifted along the grid of the output image. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Astrophysics graduate student programs . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... VLBI . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

authspeed [ -cdm ] [ -n loops ] auth.samplekeys . This program encrypts a test file and determines the authentication delay to use in the NTP configuration file. ... Default is value to use in the authdelay configuration command. -d . ... Default is no debug output. -m . ... Default is DES-CBC algorithm. -n loops . ... Default is 20,000./authstuff/auth.samplekeys - a representative list of keys ./authstuff/auth.speed - a listing of results for a representative set of architectures and compilers . ...

... These objects are predefined JavaScript objects that you access through the mimeTypes array of the navigator or Plugin object: navigator.mimeTypes[ index ] where index is either an integer representing a MIME type supported by the client or a string containing the type of a MimeType object (from the MimeType.type property). ... Property . ... The Plugin object for the plug-in that is configured for the specified MIME type If the MIME type does not have a plug-in configured, enabledPlugin is null. ...