Pinhole camera test set-up

Taking the first 3200-megapixel images was an important first test for the focal plane. To do so without a fully assembled camera, the SLAC team used a 0.15-mm (0.005-inch) pinhole to project images onto the focal plane. Left: Schematic of a pinhole projector that projects an image of a Romanesco’s detailed texture onto the focal plane. Right: SLAC's Yousuke Utsumi and Aaron Roodman remove the pinhole projector from the cryostat assembly after projecting the first image onto the focal plane.