Spehro Pefhany wrote: >At 12:09 PM 2/8/01 -0500, you wrote: >>Can anyone point me to more info on how they do star sighting? That >>seems to me to be a fairly difficult problem. It would be especially >>interesting to see how they solved it with 1950s or 60s electronics. >Specialized vidicon type tubes that used magnetic deflection. You diddle >current through the deflection coils to center the image of the star. >With care, bandwidths of 100kHz could be achieved, far beyond what you >can do with ordinary CCD imagers today. Price was high, of course. Of course, you know, now we'll have to kill you, and everyone you've passed this information to... -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu