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- Ryle_Telescope abstract "The Ryle Telescope (named after Martin Ryle, and formerly known as the 5-km Array) was a linear east-west radio telescope array at the Mullard Radio Astronomy Observatory. In 2004 three of the telescopes were moved to create a compact two-dimensional array of telescopes at the east end of the interferometer. The remaining five antennas were switched off on 19 June 2006. The eight antennas have now become the Arcminute Microkelvin Imager Large Array.The Ryle Telescope was an eight-element interferometer operating at 15 GHz (2cm wavelength). The elements were equatorially mounted 13-m Cassegrain antennas, on an (almost) east-west baseline. Four aerials were mounted on a 1.2 km rail track, and the others were fixed at 1.2 km intervals. Baselines between 18 m and 4.8 km were therefore available, in a variety of configurations. For high-resolution imaging, the mobile aerials were arranged along the track, to give uniform baseline coverage to 4.8 km; for low-brightness astronomy (e.g. the Sunyaev-Zel'dovich effect) the mobile aerials were arranged in a 'compact array', with a maximum baseline of about 100 m. All antenna pairs were correlated, so some long baseline data were always available, even in the 'compact array' configuration.As the telescope was an east-west instrument, most imaging observations involved 12-hour observations in order to fill the synthesised aperture (calibration observations are routinely interleaved). Another consequence of the geometry was that it is not practical to image sources near the equator, or in the south. The two-dimensional Large Array overcomes this problem with its new north-south baselines.Although the telescope was not designed as a common user instrument, the operators were happy to accept proposals for observing time on the instrument from outside observers, provided that they did not overlap substantially with existing observing programmes, on a 'best efforts' basis. Monitoring variable sources was possible using short observations which could often be inserted between longer 'standard' observations.The telescope had three main scientific programs: study of the Sunyaev-Zel'dovich effect in galaxy clusters, particularly in determining the Hubble constant; surveying for radio sources that would contaminate degree-scale observations of the cosmic microwave background made with the Very Small Array, and flux monitoring of galactic variable sources.".
- Ryle_Telescope thumbnail Mrao_ami_lba_ryle.jpg?width=300.
- Ryle_Telescope wikiPageExternalLink maps?t=k&hl=en&ll=52.169811,0.059448&spn=0.001005,0.002309.
- Ryle_Telescope wikiPageID "1520640".
- Ryle_Telescope wikiPageRevisionID "600465757".
- Ryle_Telescope hasPhotoCollection Ryle_Telescope.
- Ryle_Telescope subject Category:Cavendish_Laboratory.
- Ryle_Telescope subject Category:Interferometric_telescopes.
- Ryle_Telescope subject Category:Radio_telescopes.
- Ryle_Telescope point "52.1698 0.0594".
- Ryle_Telescope type Artifact100021939.
- Ryle_Telescope type AstronomicalTelescope102751295.
- Ryle_Telescope type Device103183080.
- Ryle_Telescope type Instrument103574816.
- Ryle_Telescope type Instrumentality103575240.
- Ryle_Telescope type InterferometricTelescopes.
- Ryle_Telescope type Magnifier103709206.
- Ryle_Telescope type Object100002684.
- Ryle_Telescope type PhysicalEntity100001930.
- Ryle_Telescope type RadioTelescope104044716.
- Ryle_Telescope type RadioTelescopes.
- Ryle_Telescope type ScientificInstrument104147495.
- Ryle_Telescope type Telescope104403638.
- Ryle_Telescope type Whole100003553.
- Ryle_Telescope type SpatialThing.
- Ryle_Telescope comment "The Ryle Telescope (named after Martin Ryle, and formerly known as the 5-km Array) was a linear east-west radio telescope array at the Mullard Radio Astronomy Observatory. In 2004 three of the telescopes were moved to create a compact two-dimensional array of telescopes at the east end of the interferometer. The remaining five antennas were switched off on 19 June 2006.".
- Ryle_Telescope label "Ryle Telescope".
- Ryle_Telescope sameAs m.057nhc.
- Ryle_Telescope sameAs Q7385171.
- Ryle_Telescope sameAs Q7385171.
- Ryle_Telescope sameAs Ryle_Telescope.
- Ryle_Telescope lat "52.1698".
- Ryle_Telescope long "0.0594".
- Ryle_Telescope wasDerivedFrom Ryle_Telescope?oldid=600465757.
- Ryle_Telescope depiction Mrao_ami_lba_ryle.jpg.
- Ryle_Telescope isPrimaryTopicOf Ryle_Telescope.
