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[2011] Nature doi:10.1038/news.2011.567
Kate McAlpine

The find of Eva Seidenfaden of Scheiner’s original diagram of the 1630 Rome halo (Applied Optics 50 F60-F63 (2011)), which has thought to be lost forever, is discussed. The diagram show a legendary halo about which she has published before with Tape and Können (Applied Optics H72-H84 (2008)), and which has helped Huygens to develop his halo theory.
NB: the Nature article has been republished on 30 Sep 2011 in Scientific American.