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Photographic and Electronic detectors (jan 1, 2000 – jan 1, 2020)

Description:

photographic film or glass plates served as the prime astronomical detectors, whether for photographing spectra or direct images of celestial objects.

Added to timeline:

Technology timeline of astronomy

ByHunter
13 Feb 2020
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208

Date:

jan 1, 2000
jan 1, 2020
~ 20 years
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