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Lockheed Martin previews a future of tiny space telescopes
Current space telescopes are... big. You can't really avoid it given the need for giant lenses and bulky sensors. Lockheed Martin wants to fix that -- the aerospace firm has just released the first images from SPIDER (Segmented Planar Imaging Detector for Electro-Optical Reconnaissance), an optical instrument that promises pictures as sharp as what you'd get from a space telescope in a sensor that's just an inch thick. Instead of using a handful of monolithic lenses, it relies on a legion of small lenses whose data is divided and recombined using a photonic circuit. The initial results aren't spectacular, but they hold a lot of promise.
