Hans agreed to ship Rosanna 2 or three Aluminum segments for comparison with slumped mir. Or will the building temperature be stable enough. Tube positions and orientations will be calculated to give fixed separations in zenith angle and azimuth angle between rows and columns. A camera was proposed which had 19 columns and 21 rows, with 1.5 degree separation between columns and 1.3 degrees separation between row centers. An aluminum frame for the camera tubes will be machined.
Tests are underway fabricating a section of the camera.
A batch of 50 pmts was examined. Paulo described progress on the Mercedes star devices which act like Winston cones to collect light otherwise destined for spaces between packed pmts. Made of plastic, factory injection moulded. Order has been placed. This simulation is new, and independent of Dawson's code.