COMMISSIONING THE VERY SMALL ARRAY
BEN RUSHOLME
Cavendish Astrophysics, University of Cambridge,
Madingley Road, Cambridge CB3 0HE, England


Abstract:
The Very Small Array (VSA) is a fourteen-element interferometer for sensitive measurement of CMB anisotropies on scales of three degrees to ten arc-minutes. The telescope was assembled and tested in Cambridge and is now undergoing commissioning observations on site in Tenerife. As each antenna in the array tracks quasi-independently this provides a fringe rate per baseline which attenuates systematics such as cross-talk. This possible contaminant has been modelled on measurements of antenna cross-coupling and shown to be under the thermal noise.