Section I: Introduction to ALFA and GALFA . Section II: System Description . ... ALFA receives 7 beams, 2 polarizations per beam, each covering 1225-1525 MHz. The 14 IF signals cover nominally the 100 to 400 MHz band. ... A high-resolution, low-bandwidth spectrometer (8K channels covering a 7 MHz bandwidth) . ... Each spectrometer board handles two polarizations from one telescope beam.The baseband signals are to be digitized by four 8-bit ADCs at 100 Msamples/sec. ... Bandwidth: . ...

The Parkes 21cm Multibeam Receiver is a new facility available on the Parkes Telescope which is operated by the Australia Telescope National Facility (ATNF), CSIRO. The facility consists of a 13-beam cooled 21cm receiver system, located at the prime focus of the 64m dish. ... Completed 21cm Multibeam Receiver being hoisted up to the Parkes focus cabin. ... It is now available, in 64 MHz mode and in pulsar mode, for normal National Facility use. ... Beam 1 . Beams 2-7 . ... Frequency Range . ...

The database contains 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 radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

... Astrophysics Group . ... VSA . ... CAT . ... The Very Small Array is a custom-built radio telescope (operating between 26-36 GHz), designed expressly to make high resolution observations of the cosmic microwave background (CMB) radiation on angular scales around and below one degree. ... The VSA has been operated in ?compact array? and ?extended array? configurations (see the technical description below) and data collected to achieve high sensitivity in both regimes have been analysed. ... 1.75 GHz)...

This document describes tips for converting from xpa 1.0 (Xt-based xpa) to xpa 2.0 (socket-based xpa). ... The changes are straight-forward and almost can be done automatically (we used editor macros for most of the conversion). ... Also change first 2 arguments from XtPointer to void *. ... Change NewXPACommand() to XPAcmdNew(), with the new calling sequence: xpa = NewXPACommand(toplevel, NULL, prefix, NULL); is changed to: xpa = XPACmdNew(xclass, name); . ... Go to XPA Help Index ...

Status of the RadioAstron project development . The engineering model of the Space Radio Telescope (SRT) was assembled in Lavochkin Association (LA) in the configuration consisting of 10-m parabolic radio astronomical antenna made of carbon-fiber, F ocal and Device cabins of the scientific payload and on-board and ground complex of high data rate up-down radio link (VIRK). ... Then,radio astronomical tests were conducted using real radio sources. ... Space Radio Telescope . ... Data Processing . ...

... Tonight's Sky . ... The Magazine . ... Star Atlas . ... An artificial comet holds secrets to Earths life . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... The planet has extreme temperature swings and perhaps active lava flows. ... A digital supplement to Astronomy magazine. ... Join TravelQuest International with Astronomy and Discover magazines on one of three great tour options surrounding this celestial spectacle . ... Astronomy Magazine . ...

Stellarium 0.12.3 . ... Classes . ... ShortcutLineEdit Class Reference . ... voidљ . clear () . Clear contents and stored keys. ... Remove the last key from the key sequence. ... When ShortcutLineEdit receives the focus, its whole contents get selected. ... Remove the last key from the key sequence. void ShortcutLineEdit::clear . ... Clear contents and stored keys. void ShortcutLineEdit::focusChanged . ... false if the widget has the focus, true otherwise. void ShortcutLineEdit::setContents . ...

. This image illustrates kerning. It shows the letters "AVfj" in a large, italic serif font. We see that the bottom right part of the "A" crosses the vertical axis separating it from the "V" to its right. Similarly, the "f" and "j" enter into each other's space. Return to image.

... The schedule assigned id (example: AS05) for your observing program. ... Use the time you started using the telescope including when you started taking calibrations. The time you opened for on sky observations can be entered later in the activity log. UTC End Time: . ... Focus Log: . ... The focus position can be obtained under the Telescope column of the System Status in ACP or from the run log. ... When all fields are filled out press this button to email the log to the ARCSAT and community. ...

Radio Interferometry Principles . Radio Interferometry Signal Processing . ... A radio interferometer consists of a pair of directional antennas that are tuned to receive radio emissions from a source in a desired RF band. ... The antennas are pointed at the radio source of interest and are set up to receive the signal and process it into a form suitable for transmission to the correlator. ... In connected element interferometry, the digital signal goes directly to the correlator. ...

Venera 8 . Courtesy of NASA's National Space Science Data Center . ... Venera 8 was a Venus atmospheric probe. Its instrumentation included temperature, pressure, and light sensors as well as radio transmitters. ... The probe confirmed the earlier data on the high Venus surface temperature and pressure returned by Venera 7, and also measured the light level as being suitable for surface photography, finding it to be similar to the amount of light on Earth on an overcast day. ...

USSR Venus Orbiters . ... Venera 15 and Venera 16 were a two-spacecraft mission designed to use 8-centimeter (3-inch) band, side-looking radar mappers to study the surface properties of Venus . ... Each spacecraft consisted of a synthetic aperture radar (SAR) and a radio altimeter. ... The Venera 15 and 16 synthetic aperture radar (SAR) systems were identical, and were used to map the surface of Venus at a resolution of 1 to 2 kilometers (.6 to 1.2 miles) over a period of 8 months. ...

Beginning from the May of the 1997 we started to publish our daily solar radio observations at RATAN-600 radiotelescope. ... Periscope System: South Sector+Flat Mirror . ... It is possible to track a source by moving the secondary mirror along the arc-shaped railway tracks or to perform azimuthal 2D map synthesis . ... 1) It is possible to simultaneously carry out independent observing programs using individual sectors at various discrete azimuths and secondary mirrors on corresponding railway tracks. ...

... Science . ... Science Users Information > Science Archive Facility > Request Handler FAQ . ... Data Handling and Products . ... ESO Data . ... Also, please double-check that you have entered correctly the full address of the service ( http://www.eso.org/requestHandler/pipacks ), including the leading triple w. Answer: The packages contain the raw data belonging to the selected run, the associated raw calibrations, the masters derived from them and the pipeline science products generated from them...

... Gallery . ... The Supervisor receiving one of many handoutтАж . Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . Sidebar Right . ... Title: The Supervisor receiving one of many handouts . Description: Image: Kim Rawlings . ... The Supervisor receiving one of many handouts Image: Kim Rawlings . Powered by Gallery 3.0.9 (Chartres) . ...

John Kielkopf entered the University of Louisville as an early-admissions student in 1963 before finishing high school. ... Currently also an Adjunct Professor at the University of Southern Queensland, Australia, he has been an Associate Research Scientist at Hopkins, a Visiting Scientist at Argonne National Laboratory, and an Adjunct Astronomer at the Observatory of Paris - Meudon. ... Bradley Carter and Rhodes Hart of the University of Southern Queensland, Australia. ...

... The set of equipment includes 8-mm band transmitting/receiving module (TRM), 1.5-cm band multi-channel receiver, and 2-cm band receiving module. TRM, operating in 8-mm range, assures two-way communication with up to 10 Mbaud rate (33–36 GHz input/output frequency). The 1.5-cm receiver is designed for receiving the service and scientific data from the space radio interferometer in 18–26 GHz frequency range (8 channels) with up to 36 Mbaud data transfer rate. ... 1.5-cm multi-channel receiver . ...

. You interact with the Unix operating system by entering a command at the shell prompt . You can look up the command in the On-line Manual for a complete description of it. About commands . Did You Know? . Where are commands located? . Entering commands . Redirecting standard input and output . Connecting commands together . Creating a command alias . Locating a command . Making other commands available . Writing your own commands .

Next: The 4-m International Liquid Mirror Telescope Project (ILMT) . ... 238, Astronomical Data Analysis Software and Systems X, eds. F. R. Harnden, Jr., ... The James Clerk Maxwell Telescope (JCMT) on the summit of Mauna Kea in Hawaii is a 15meter telescope which operates in the sub-millimeter region of the spectrum (in practice from about 2mm to 350microns). ... The mapping of the primary reflector surface is achieved by "holographic" techniques. ... It instructs the DHS to open a FITS data file. ...