Image Fidelity

This memo discusses the imaging properties of the combined BIMA & OVRO arrays. The 15-antenna array with 8 GHz bandwidth and a system temperature 100 K will have a sensitivity 1 mJy min ?0:5. For extended sources the image delity depends on the source brightness distribution and data sampling. For mosaic observations the heterogeneous array comprised of 10.4 and 6.1 m antennas will have three diierent primary beam types. We compare the image delity obtained as a function of the uv sampling, the pointing sampling, and the image complexity, and compare these results with imaging by a homogeneous array of 8 m antennas.