... 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 . ...

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 . ...

Operating of the superconducting integrated receiver channel of the TELIS atmospheric sounder. ... The noise temperature of the SIR was measured to be as low as 120 K, with an intermediate frequency band of 4 ­ 8 GHz in double sideband operation; the spectral resolution is well below 1 MHz. The SIR was implemented in the three-channel balloon-borne instrument TELIS (TErahertz and submillimeter LImb Sounder) that detects spectral emission lines of stratospheric trace gases (like ClO and BrO). ...

Communications For Your Astronomy Event . Articles | ... Some manufacturers have received approval to market radios that are certified for use in both the Family Radio Service (FRS) and the General Mobile Radio Service (GMRS). ... FRS radios have a maximum power of Ѕ watt (500 milliwatt) effective radiated power and integral (non-detachable) antennas. ... FRS and GMRS Channel 1 . ... The FRS/GMRS radios I have transmit more than 1/2 watt when on channels 1-7 and 15-22. ... www.astronomy.net . ...

... Tracking stations will be selected in accordance with the schedule issued daily by the General Operative Control Group (GOCG) in Lavochkin Association with the gaps in operations during spacecraft contact with the control stations (CS). ... Communication frequencies (carrier): high data rate information transmission downlink from the SRT ­ 15.000 GHz; uplink synchronization ­ 7.2075 GHz; downlink synchronization ­ 8.400 GHz. ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... Antenna system . ... The Irkutsk incoherent scatter radar is one of the world's nine active radars which give the opportunity to investigate ionosphere by the incoherent scatter method. ... Antenna gain coefficient . ... Antenna . ... Two antennas . ... To get an idea what station "Dnepr" antenna system looks like, let us consider some of the radar views which are given by the photographs General view and Side view . ...

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. ...

Guided by your suggestions, we desire to improve the Arecibo Observatroy operations to . better serve the needs of our users. Please complete and submit this form following your . ... Your comments will be reviewed by a number of NAIC-AO scientists and support staff. ... Receiver(s) used: . ... adequate . ... excellent . ... Please enter brief comments on the following: . ... ADDITIONAL COMMENTS: . If you have questions or problems with this form please send an email to . ...

In the PROJECT we are using the following peculiar . features of RATAN-600 . ... Brightness temperature sensitivity being equal to the antenna temperature sensitivity .. ... Receiver system .. ... Using aperture averaging effect. dual- beam and dual (multi-) frequency filtration, we demonstrated full filtration of the atmosphere noise down to the receiver noise at all scales of acoustics peaks ( Fig.1 , Fig 2 ). ... We select this frequency as the central one in our project. ... Antenna surface . ...

... Driver ID: GPS-HP . ... This driver supports the HP 58503A Time and Frequency Reference Receiver. ... It receiver should be operated with factory default settings. Initial driver operation: expects the receiver to be already locked to GPS, configured and able to output timecode format 2 messages. The driver uses the poll sequence :PTIME:TCODE? to get a response from the receiver. ... Specifies the driver reference identifier, an ASCII string from one to four characters, with default GPS . ...

... RS-232 Signals on an RJ11 Jack . ... 6-wire 6-position RJ11 (sometimes called RJ12) modular phone connectors are used for all RS-232 communications at Apache Point Observatory. ... hardware flow control transmit (optional) . ... There are two different names for the connectors we use: "6-wire 6-position RJ11" appears to be most common, but "RJ12" is, or was, also used. ... These are fine for most serial connections, but beware of special cases in which the outer pair (hardware flow control) is in...

... Archives . ... Discontinuation of weekly [arXiv] series . ... For a discipline that relies so heavily on images, it is rather surprising how little use astronomy makes of the vast body of work on image analysis carried out by mathematicians and computer scientists. ... images. ... Images may be Opened and Closed with different structure elements. ... Tags: close , dilate , EotW , Equation , Equation of the Week , erode , Morphological operator , open , set theory . Category: Imaging , Jargon | ...

... Ham packet radio system including: . ... control computer RSC 2. dedicated software monitoring generation of probing pulses in onboard transceiver in radio beacon mode; . ground receiving network of ham radio packet communication to record probing pulses of onboard radio beacon; . ... Generation of onboard radio beacon probing pulses as time marks to ground receiving network (including ham radio receivers of USW) and transmission of the measurement results throughout Internet network. ...

... 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)...

. XMM-Newton Science Analysis System . rgsangles (rgsangles-4.6.3) [xmmsas_20080701_1801-8.0.0] . Meta Index / Home Page . This task operates on the EXPOSU0n and EVENTS tables of the merged event list . High-time resolution mode will not produce any cross dispersion columns. Keywords related to cross dispersion values are not produced in that case . There is no internal looping over multiple sources. The caller (meta task) should do the source loop. XMM-Newton SOC/SSC -- 2008-07-02

Peremennye Zvezdy", . ... see Comments) . ... Type EC/DSCT (contact binary or Delta Scuti star) with the period of 0.07443 days in the ASAS-3 catalog. ... Type DSCT with the period of 0.228712 days in the ASAS-3 catalog. ... Type DSCT with the period of 0.077459 days in the ASAS-3 catalog. ... Type DSCT with the period of 0.107193 days in the ASAS-3 catalog. ... Type DSCT with the period of 0.149089 days in the ASAS-3 catalog. ... Type DSCT with the period of 0.176448 days in the ASAS-3 catalog. ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Sky this Week . ... Astronomy for Kids . ... Communication failure of X-ray astronomy satellite т??Hitomiт?? ... The Japan Aerospace Exploration Agency (JAXA) found that communication with the X-ray astronomy satellite Hitomi (ASTRO-H), launched on February 17, 2016, failed from the start of its operation originally scheduled at 16:40, Saturday March 26 (JST). ... Only registered members of Astronomy.com are allowed to comment on this article....

... Apache HTTP Server Version 2.4 . ... Set timeout and minimum data rate for receiving requests . ... Allow 10 seconds to receive the request including the headers and 30 seconds for receiving the request body: RequestReadTimeout header=10 body=30 . ... If the client sends data, increase the timeout by 1 second for every 1000 bytes received, with no upper limit for the timeout (except for the limit given indirectly by LimitRequestBody ): RequestReadTimeout body=10,MinRate=1000 . ... mod_reqtimeout . ...

... On-line calibration consists of calibration operations performed to maintain the ALMA observing system properly tuned to successfully execute the planned observations. ... Among processing operations are the calibration of the atmospheric absorption, of phase radiometric correction, of pointing scans, of phase and amplitude reference measurements, .. ... In the mean time tests of the calibration software will proceed using both simulated data and data from the antenna prototypes...?re 1 . ...

... JWST . ... Flight operations is the near real-time activity of the STScI Science & Operations Center (S&OC) to obtain and capture the science data from JWST. ... The Flight Operations System (FOS) is the integrated software and hardware that supports flight operations for JWST and real-time interaction with the observatory for both routine and contingency operations. ... The FOS receives all telemetry data from the observatory, both real-time engineering data and recorded engineering and science...