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A comment on Why Don't We Build a Telescope Without Mirrors or Lenses?. Parent comment

Re:Why Don't We Build a Telescope Without Mirrors or Lenses? by planteen on Monday October 02, 2017 @11:21AM (#15384473)
There is also a sensor stack for different wavelengths that is actually realized, not a pipe dream like the article makes it seem: https://en.wikipedia.org/wiki/Foveon_X3_sensor
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