Military1952

Blue Book orders diffraction-grating cameras for UFO spectra

Name: Blue Book orders diffraction-grating cameras for UFO spectra
Start: 1952
Location: Wright-Patterson AFB, OH

When: 1952
Where: Wright-Patterson AFB, OH
Sources: 1 public source

Project Blue Book status reports from the period when it ordered diffraction-grating cameras US Air Force, Public domain, via Wikimedia Commons

Project Blue Book planned cameras fitted with diffraction gratings to split UFO light into a spectrum and tell meteors, aircraft and balloons apart. Chief Edward Ruppelt later wrote that in tests they could not usefully photograph a bright flare at 450 yards, but were sent out anyway.

Sources

FirsthandThe Report on Unidentified Flying Objects (Edward J. Ruppelt, 1956) (opens in a new tab)Project Gutenberg / 1956

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Where it fits

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