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Pilot Survey
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Summary Report

The Pilot Survey was initially assigned 7 nights during period 62. Then, due to delays in making the WFI operational, it was decided to include the Pilot Survey observations in the commissioning run of the WFI in January 1999. The Pilot Survey was assigned 3 hours per night in the period Jan 6 to Jan 18 1999. During this run 3/4 of Patch C and all of Patch D were observed in the B-band.

In period 63, 7 nights were allocated to the Pilot Survey and they were divided between 4 runs: 2 in April, 1 in May and 1 in September. In period 64, 17 hrs have been allocated in Service Mode. They completed Patch C and D in the B-band and fully covered patch D in the V-band (this filter was only available after March 1999).
During bright time in the first run in April, half of patch D was observed with the 913nm medium band filter. This observing time was supposed to be used to cover the same patch with the WFI Z filter but it was unavailable at the time. In addition the 913nm filter is expected to be valuable for determining photometric redshifts.
In the following table, actual coverage of each patch is shown according to different filters. The numbers in red refer to the area covered by the WFI.
Patch    U  B V I 913nm Total
A   1.0 1.2 3.2   5.4
B 1.25 1.5 1.5 1.6   5.85
C   6.0 6.0 6.0   18.0
D   6.0 6.0 6.0 3.0 21.0
Total 1.25 13.5 14.7 16.8 3.0 50.25