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It is known as the 1951 USAF Test Chart, and it is and was a standard: http://en.wikipedia.org/wiki/1951_USAF_resolution_test_chart http://en.wikipedia.org/wik
by daniel_reetz 14y ago
It is known as the 1951 USAF Test Chart, and it is and was a standard:
http://en.wikipedia.org/wiki/1951_USAF_resolution_test_chart http://en.wikipedia.org/wiki/1951_USAF_resolution_test_chart
- stevenrace 14y agoExactly what I was looking for, thanks. It seems the 'Milspec' status is: MIL-STD-150A, dated 06 January 1998, is hereby cancelled without replacement. With as many multi-spectral instruments we have floating about, I wonder what other shapes, compositions, or controlled temperature gradients might be in use under our noses.