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- W3111572783 abstract "Twenty-five 12-meter diameter antennas were delivered by the National Radio Astronomy Observatory (NRAO) to the Atacama Large Millimeter Array (ALMA) Observatory. Astronomical holography (astroholography) surface measurements conducted from 2011 through 2014 established that on some antennas the reflector surface error surpassed the specified error limit of 25μm because of an excessive thermal dependence. This paper summarizes the testing and analysis efforts to identify the root-cause of the primary surface error thermal dependence and the resulting design efforts, which lead to the development of a prototype and a subsequent production wall system that satisfactorily minimizes the primary surface thermal difference." @default.
- W3111572783 created "2020-12-21" @default.
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- W3111572783 date "2020-12-13" @default.
- W3111572783 modified "2023-09-25" @default.
- W3111572783 title "Correcting primary reflector surface errors produced by excessive thermal dependence on the North American ALMA 12-meter antennas" @default.
- W3111572783 doi "https://doi.org/10.1117/12.2560188" @default.
- W3111572783 hasPublicationYear "2020" @default.
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