The MPIfR 7-channel bolometer array was installed and available for
observations from February 1 to 27. The measured sensitivity on an absorber
for the central channel was 40 . The sensitivity of the other
channels was similar, except channel 4 which was up to a factor of two
worse. In general, the instrument worked without problems and could be used
almost all of the time. Some interruptions were caused by problems with
the wobbler.
The weather conditions seem to have been
somewhat worse than expected for February.
Fig. 1 shows the zenith optical
depths (measured with skydips) during February. Even during periods with
high
values, useful data could sometimes be obtained because of the
very stable (but poor) atmosphere.
Figure 1: Zenith optical depth during February 1995.