"It's made using a modified Shackman oscilliscope camera, 0.4mm pinhole, ~ f/200, using Fuji FP 3000B. I made two exposures,each of ~1/100th sec., the camera was rotated through 180 degrees for the second exposure."
"Modified Shackman camera (possibly for an oscilloscope?) fitted with an Ilex shutter and a 0.4mm pinhole and a Polaroid film back. The lens assembly can be moved from 80mm to 98mm from the film plane to provide a limited 'zoom' function. The back can be rotated through 360 degreees. and moved approx. 3.5cm either side of the lens center line in a series of eight detented stops."