Thursday 14 December at 1pm in the Gemini HQ Seminar Room

ABSTRACT: "The Mauna Kea summit, with its impressive collection of large telescopes, offers a unique opportunity to build a large optical and infrared interferometer in the northern hemisphere with both the highest angular resolution and the highest sensitivity. The 'OHANA array can potentially use 7 telescopes larger than 3 meters. The longest baseline is between Subaru and CFHT and has a length of 800 meters providing a 0.5 mas resolution at 2 /mu m. The shortest connect the two Keck telescopes. Although the telescopes were not arranged in an interferometric array a good (u,v) coverage can be achieved. The larger telscopes of the array mostly produce East-West baselines. From ths point of view, inclusion of smaller 4-meter class telescopes is important to provide shorter and intermediate baselines and North-South extension."