Spectral Line Interferometry with Independent Time Standards at Stations Separated by 845 Kilometers
- 11 August 1967
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 157 (3789) , 676-677
- https://doi.org/10.1126/science.157.3789.676
Abstract
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.Keywords
This publication has 8 references indexed in Scilit:
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