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About: Half-Mile Telescope     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatRadioTelescopes, within Data Space : dbpedia.org associated with source document(s)

Type: yago:Artifact100021939yago:AstronomicalTelescope102751295yago:Device103183080yago:Instrument103574816yago:Instrumentality103575240yago:Magnifier103709206yago:Object100002684yago:PhysicalEntity100001930yago:RadioTelescope104044716yago:WikicatInterferometricTelescopesyago:ScientificInstrument104147495yago:Telescope104403638yago:Whole100003553yago:WikicatRadioTelescopes New Facet based on Instances of this Class

The Half-Mile Telescope was constructed in 1968 (2 aerials) at the Mullard Radio Astronomy Observatory with two more aerials being added in 1972, using donated dishes (total cost was £70,000). Two of the dishes are fixed, while two are moveable and share the One-Mile's rail track; to obtain information from the maximum number of different baselines, 30 days of observing were required. Observing frequency 1.4 GHz (21 cm wavelength), bandwidth 4 MHz. Used for Hydrogen Line studies of nearby galaxies and produced the first good radio maps of hydrogen distribution (as a function of its velocity), for M33 and M31 (also produced nearly 20 PhDs and 50 published papers). The telescope was operated by the Radio Astronomy Group of the Cambridge University.