This experiment is a ground-based telescope located in Saskatoon, Canada. A cooled
HEMT receiver with six channels is used to span the frequency range 26 to 46 GHz. The chopping
strategy is quite complex, and can be used to synthesise ‘window functions’ appropriate to a
range of angular scales. The beam sizes used range from 1.5° at the lowest frequency to
0.5° at the highest. The analysis of observations of a 24 hour RA strip at declination +85.1° is
described in Wollack et al. (1993)  and Netterfield et al. (1995) , indicating a detection
of primordial anisotropy. More recently in Netterfield et al. (1997) , exciting results have
been presented which show not just a detection, but for the first time for a switched-beam
instrument, evidence for the form of the power spectrum itself on the angular scales probed.
The final map after 3 years of data from this experiment is shown in Figure 13
Figure 13: Saskatoon 3 year map showing region analysed as compared to the COBE full sky
and the power spectrum from this map will be used below, in comparison with theoretical predictions.
We note here that there is currently an overall scaling uncertainty in the Saskatoon results
of ±14%, due to calibration uncertainties. Recent analysis of the Saskatoon data (Knox, in
prep.) appear to show that the previous calibration is an underestimate of the true level of the
Saskatoon data. This would make the Doppler peak even higher and lower the value of found