Expected timing of relevant events
| Event | Date | Implications
|
| CABB stage 1 | Oct-Nov 2007 | Two element interferometer equipped; CABB data available
|
| ATCA shutdown starts | not before Apr 2008 |
|
| Commissioning complete | not before July 2008 | miriad Stage 1 needed for astronomy.
|
| 1-3 GHz receivers complete | Mar 2009 | Very wide fractional bandwidths possible
|
| 4-12 GHz receivers complete | June 2009 |
|
The above estimates were provided on 17 Aug 2007.
| Stage | Description
|
| 1 | Basic handling of CABB data. Strong frequency dependencies ignored.
|
| 2 | Use of wide "continuum" bands to calibrate zoom bands. Strong frequency dependency handled using the 'divide and conquer' approach; that is, split up the 2 GHz CABB band into a number of sub-bands for which the existing calibration tasks are adequate. Continuum images will be sums of deconvolved images from the sub-bands, limiting the image quality.
|
| 3 | Data flagging on the basis of autocorrelations; single dish analysis modes. Broad bands and data volume is expected to make automatic flagging highly desirable, or essential.
|
| 4 | Wide bands handled explicitly: calibration and imaging tasks become frequency dependent, removing the limitations imposed by the technique used in stage 2.
|
| 5 | New algorithms for high-dynamic range imaging and polarimetry
|
Time (days) required for miriad changes for to each stage.
| Date | CABB/rx | miriad | M'stone
|
| Aug | | Complete plan. Fork code into Trac. | 1,2,3,4,5
|
| Aug-Oct | | Make atlod changes |
|
| Oct 2007 | CABB stage 1 | Begin test, verify loading |
|
| Nov | | Make gpcal, uvsplit changes |
|
| Dec-Mar | | Make invert changes. Test & verify to end Stage 1. | 6
|
| Apr 2008 | ATCA shutdown starts | miriad (Stage 1) available for commissioning tests. |
|
| Jul 2008 | Commissioning complete | miriad Stage 1 needed for astronomy. miriad Stage 2 available (shared-risk). | 8
|
| Dec 2008 | | miriad Stage 3 released | 9
|
| Mar 2009 | 1-3 GHz receivers complete | Very wide fractional bandwidths possible |
|
| Jun 2009 | 4-12 GHz receivers complete | |
|
| Jun 2009 | | miriad stage 4 released | 10
|
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