Image Photon Counting System, prototype version, plus associated documentation designed by Prof. Boksenberg and used on the Hale Telescope at Mt. Palomar. Image Photon Counting System, 1973
Trolley base for Photon Detector Assembly (PDA) of the Hubble Space Telescope's Faint Object Camera, flight spare. Photon Detector Assembly (PDA) for Hubble Space Telescope Faint Object Camera, engineering model