Spectral Line Interferometry with Independent Time Standards at Stations Separated by 845 Kilometers

Details Spectral Line Interferometry with Independent Time Standards at Stations Separated by 845 Kilometers Spectral Line Interferometry with Independent Time Standards at Stations Separated by 845 Kilometers

Aug 1967

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1967sci...157..676m&link_type=abstract

Science, Volume 157, Issue 3789, pp. 676-677

Computer Science

17

Scientific paper

An upper limit of 0.02 second of arc has been determined for a hydroxyl radical (OH) emission region associated with the radio source W3, with the use of a Michelson interferometer consisting of two radio telescopes 845 kilometers apart. Timing was provided at the stations by independent atomic frequency standards. The 1665-megahertz radiation was translated to video frequency and recorded digitally on magnetic tapes which were later processed by computer, yielding fringe phase and amplitude as a function of frequency over the received bandwidth.

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