The 600-Foot Radio Telescope.
نویسندگان
چکیده
منابع مشابه
Recent Radio Monitoring of Microquasars with Ratan-600 Radio Telescope
We report about the multi-frequency (1-30 GHz) daily monitoring of the radio flux variability of the three microquasars: SS433, GRS1915+105 and Cyg X-3 during the period from September 2005 to May 2006. 1. We detected clear correlation of the flaring radio fluxes and X-rays ’spikes’ at 2-12 keV emission detected in RXTE ASM from GRS1915+105 during eight relatively bright (200-600 mJy) radio fla...
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Studies conducted by the Cambridge Radio Observatory Committee during the past two years show that a large steerable telescope can be constructed at lower cost and with higher precision if the antenna is protected from the environment by a radome. These studies also indicate that the extremely high pointing precision (10 arc-sec) needed to make effective use of a large aperture at wavelengths a...
متن کاملObservations of the bright radio sources in the North Celestial Pole region at the RATAN-600 radio telescope
Abstract. A survey of the North Celestial Pole region using the RATAN-600 radio telescope at five frequencies in the range 2.3 to 21.7 GHz is described. Sources were chosen from the NVSS catalogue. The flux densities of 171 sources in the Declination range +75◦ to +88◦ are presented; typical flux density errors are 5-10 percent including calibration errors. About 20 percent of the sources have ...
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A 4-km synthesis radio telescope has recently been commissioned at Ootacamund, India for operation at 327 MHz. It consists of the Ooty Radio Telescope (530 m × 30 m) and 7 small antennas which are distributed over an area of about 4 km × 2 km. It has a coverage of about ± 40° in declination δ. The beam-width is about 40 arcsec × 90 arcsec at δ = 0° and about 40 arcsec × 50 arcsec at δ = 40°. Th...
متن کاملSome Radio Telescope Considerations in Millimeter and Submillimeter Radio Astronomy
We review some aspects of radio telescope performance, particularly those relating to the characteristics of the feed system used for illuminating the antenna. We discuss the aperture eeciency, radiation pattern, beam width, and coupling and beam eeciencies, emphasizing the eeect of the aperture illumination on these quantities. The discussion should be useful for understanding calibration of a...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 1960
ISSN: 0004-6256
DOI: 10.1086/108144