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A comment on There Are Giant Camera Resolution Test Charts Scattered Across the US. Parent comment

Re:There Are Giant Camera Resolution Test Charts Scattered A... by SoftwareMaven on Sunday February 17, 2013 @02:16PM (#5236296)
Fascinating that there are air craft relics near the charts. I can only imagine that is part of the calibrating: so they can tell how large an aircraft is and what resolution they get for the size.
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Re:There Are Giant Camera Resolution Test Charts Scattered A... by _djo_ on Sunday February 17, 2013 @03:23PM (#5236583)
Indeed, plus one of the aircraft is one of only two remaining examples of the X-21 [0]. I suspect the other is also derelict on the range somewhere.

http://en.wikipedia.org/wiki/Northrop_X-21

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