Startup OYSTER and read the raw data file of scan 45. get_rawdata,'2002-02-15.raw.045' HDS-file opened; mode=READ. Scantable created. ... Finished reading catalogs. ... NPOI uses a special "hybrid" beam combiner, which means it is neither an all-on-one, nor a pairwise combiner, but one which is in between. The one side of the final beamsplitter being used currently contains three beams of combined light, i.e. each beam (in OYSTER called OutputBeam) contains the light from four stations. ...