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First 12mm fringes on six antennas

Following a sequence of shutdowns and extra engineering time starting back on 24 March, we have now completed another major step in the millimetre upgrade. At 4:01pm on 16 April we successfully measured solid fringes at 12mm between all six ATCA antennas.

On 23 April, the receivers were tuned to enable observations at the ammonia lines at near 23 GHz. At about 12:40pm the first ammonia spectra were taken.

First solid fringes on all six antennas, observed on 16 April.

Russell Bolton and Mick McDonald loading one of the millimetre receivers into the truck at Epping, ready for the trip to Narrabri.

Scott Munting working on the millimetre receiver on CA01

Spectra of the ammonia 2-2 line, observed on 23 April. In addition to the main line, the satellite lines are clearly detected

Original: Bob Sault (16-Apr-2003)
Modified: Bob Sault (23-Apr-2003)