THE UNDERLYING TECHNOLOGY for modern image intensifiers has been around for a couple of decades. It has given us a variety of self-contained, palm-size devices capable of amplifying light more than 30,000 times, and this gives us the reasonable expectation that an image intensifier could make ordinary backyard telescopes perform like monster light buckets. As such, it's fair to ask why the current generation of image intensifiers hasn't played a greater role in amateur astronomy.
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