This is just a very short entry to say that the company that built the cameras (Boller & Chivens) has an excellent website describing the Baker-Nunn cameras. They discuss not only the SAO and Air Force tracking cameras but also the ‘Missile Re-entry Camera’ that was produced. I had never heard of this one before but it’s pretty cool. Take a regular Baker-Nunn camera modify the mount somewhat, change the film transport mechanism, stick some fiber optic bundles at the focus, and add a set of prisms in front of the corrector to disperse the light. Pretty simple, really… ;-) The amazing thing is that, not only did it work, but it could pull the 4″ wide film through the camera at a rate of 5 frames per second!