spurious USNO-B stars

Barron, Stumm, and I made plots of the colors and magnitudes of stars identified as spurious in the USNO-B1.0 astrometric catalog on the basis that they form morphological crosses and circles centered on the bright stars. Interestingly, they have magnitudes and colors that are not unreasonable, so they could not be identified as spurious on a photometric basis. I presume this is why they made it into the catalog in the first place!

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