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17th of June 2022
When CA06 could move
A recent ADAP showed an aerial view of an ATCA antenna on the east-west rail track, and noted that while five antennas can move along the 3km east-west track (and 214m north-south spur) the sixth antenna is fixed in position 3km to the west. However, as the archival image above reveals, that was not always the case! Initially, CA06 was able to be moved along a short east-west track between two station posts ~50m apart, in order to provide a larger range of antenna spacings. However, it was found there was no real need to move CA06 as other array configurations provided a sufficient range of baseline lengths, and so the rails from CA06 were removed and reused when the north-south spur was built in the late 1990s. (Image credit: CSIRO Radio Astronomy Image Archive)

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