To leave the frames behind, click here . 430-MHz Gregorian . ... RFI Situation . ... Receiver History . ... 422-442 MHz . ... For the current frequency v time 430-MHz RFI plot from the Arecibo "hill-top" monitoring system, click here . For the current frequency v time 430-MHz RFI plot (with band-pass correction) from the Arecibo "hill-top" monitoring system, click here . For the current daily rms/mean v frequency 430-MHz RFI plot from the Arecibo "hill-top" monitoring system, click here . ...

... As of this writing, both WFPC2 and FOC have capabilities in this area. Two new instruments, the Near-Infrared Camera and Multi-Object Spectrograph (NICMOS) and the Space Telescope Imaging Spectrograph (STIS) should be installed in HST during the second service mission in Early 1997. ... Table 1.1: Comparison of WFPC2, FOC, NICMOS, and STIS Instrumental Imaging Parameters. ... At longer wavelengths NICMOS must be used; at shorter wavelengths either WFPC2, FOC, or STIS must be used. ...

... Parameters . Filters . ... Direct images . ... The SCORPIO-2 project: . Spectral Camera with Optical Reducer for Photometric and Interferometric Observations - 2 . The broad-band glass filters made in SAO RAS are used for the observation in the Johnson-Cousins (UBVRI) photometric system in the direct images mode. The glass filters transmission curves are shown by solid line. ... The filters transmission curves of the `comets' filters measured with the SCORPIO-2 in the F/4 beam. ...

... Basic Observables: Zero-differenced phase and code ionosphere-free combinations of global GNSS network stations, corrected by P1-C1 satellite code biases (cc2noncc), daily observations with 30 seconds sampling rate Sites coordinates : IGb08 reference frame coordinates and velocities Displacements: solid tides, ocean loading, pole tide loading (IERS 2010) Geometric model : Receivers antennas eccentricities, absolute receiver and ...

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 . ...

... Staff . ... Friends of Arcetri . ... Arcetri designs innovative superconductor microwave filters for the Sardinia Ratio Telescope . ... A new microwave component based on HTS technology has been presented in a recent issue of the Journal of Astronomical Instrumentation, produced by World Scientific Publishing Company, in the article тАЬ A high temperature superconductor microwave filter working in C-band for the Sardinia Radio Telescope тАЭ by Pietro Bolli and collaborators (Fig.1). ...

... The timecode of these receivers is sampled via a STREAMS module in the kernel (The STREAMS module has been designed for use with SUN Systems under SunOS 4.1.x. It can be linked directly into the kernel or loaded via the loadable driver mechanism). ... The reference clock support in xntp contains the necessary configuration tables for those receivers. In addition to supporting up to 32 different clock types and 4 devices, the generation a a PPS signal is also provided as an configuration option. ...

... 8, ``Celestial Mechanics'', 2002 Station coordinates from observations of DORIS system TOPEX/Poseidon satellite M. V. Vasiliev, E. I. Yagudina