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ATCA Release notes for 2010OCT

The OCT10 semester will commence with the "standard" CABB 1MHz continuum mode available, and with up to 4 zoom bands per IF available in the 1M-0.5k mode. There is currently an issue affecting one of the four zoom bands (specifically all baselines to CA04 in one polarization). It is hoped that this will be resolved early in the October semester.

The 64MHz CABB mode will first be used in late September. In its first implementation, the 64MHz mode will have a single 64MHz band in each IF, which will have 2048 channels across it. (Thus, if the 64MHz mode is selected for an IF, the total bandwidth in that IF will be 64 MHz and not 2 GHz.) For continuum plus spectral line studies, having one IF set with the 64 MHz mode and the other with the standard 2048 1-MHz-wide channels is possible. For spectral line studies, 64MHz is available in both IFs -- with separations up to 7 GHz between the two 64MHz channels possible. As only two 64MHz zoom bands will be available at the beginning of the semester, several highly ranked proposals for observations of multiple lines with 64MHz zoom bands have not been scheduled: these should be resubmitted at the December 15 deadline (using the same proposal code) for consideration in the 2011APR semester.

During the 2010OCT semester, it is expected that progress will be made toward expanding the number of zoom bands per IF in the 1MHz CABB mode, and that pulsar binning and higher time resolution modes will become available. It is also hoped that the 64MHz mode will be expanded with more 64MHz channels available per IF.

The weeks of Oct 18 and Dec 6 are blocked out for maintenance for the next stages of the L/S (20cm/13cm) receiver upgrade. At the start of the semester, CA02, CA03, CA04, and CA06 have been outfitted with the new 1.1--3.0 GHz receivers, with CA01 having the old L/S receiver and the receiver on CA05 having been removed for upgrading. By the end of the week of Dec 6, all six antennae are expected to have been outfitted with new receivers.

Daylight saving will start in NSW on Sunday 3 October 2010 at 2:00 am, when clocks will be put forward one hour. Daylight saving will end in NSW on Sunday 3 April 2011 at 3:00 am, when clocks will be put back one hour. The schedule is in AEST. During the daylight saving period, local "clock time" is one hour ahead of AEST, so 7am AEST is 8am daylight saving time.

Generated: Phil Edwards (9-Sep-2010)