Observing Redundancies Split each 1 hour period between lead and trail fields (7.5deg apart in RA) repeating exact same scan pattern with respect to the ground Each day during the two 8 hour periods repeat exactly the same scan pattern on sky with telescope rotated by 60 deg around line of sight (over different ground) Each day cover a strip 0.64 deg high in el, repeat passes offset and interleaved. Covered 10x6 deg patch in B03 deep field region