### Continuum projects between 11/2005 and 01/2007

In November 25, 2005, prototypes of the new generation of receivers were installed on antenna 6, while the other antennas continued observing with the old receivers. This situation remained until January 2007, when all antennas were equipped with new receivers. As a consequence, for those projects observed with DSB tuning the creation of continuum tables from all baselines except for those with antenna 6 should be made by using both bands, but the baselines with antenna 6 should just include the tuned band (pure SSB). Note that this affects all 1mm continuum projects, where the tuning was DSB by default with the old receivers.

To create continuum tables we recommend: First, storing in the uv-table the data coming from all the antennas for the band tuned in antenna 6. Second, storing the visibilities obtained for the other band, ignoring antenna 6 data. For example, for a project LSB tuned in antenna 6, but DSB in the others, we would proceed as follows:

set band lsb table table_name set band usb mark data /ant 6 table table_name /nocheck scan