E. Torbet et al., A measurement of the angular power spectrum of the microwave background made from the high Chilean Andes, ASTROPHYS J, 521(2), 1999, pp. L79-L82
We report on a measurement of the angular spectrum of the anisotropy of the
microwave sky at 30 and 40 GHz between I = 50 and l = 200. The data, cover
ing roughly 600 deg(2), support a rise in the angular spectrum to a maximum
with delta T-l approximate to 85 mu K at l = 200. We also give a 2 sigma u
pper limit of delta T-l < 122 mu K at l = 432 at 144 GHz. These results com
e from the first campaign of the Mobile Anisotropy Telescope on Cerro Toco,
Chile. To assist in assessing the site, we present plots of the fluctuatio
ns in atmospheric emission at 30 and 144 GHz.