Dear all,The DGC catalog mentions 4 sundials on the Braunschweig cathedral. The discussion does not refer to the 'new' ones from 1518 and 1715, but to two older ones, from about 1334 and about 1346. The hour line patterns (attached) show two ways of playing around with the lines, in the trial-and-error process that took place according to Zinner.
Roger, I will send you a pdf with the last three pages of Karlheinz' BSS article (2.7 MB). I think they comprise the relevant part for this discussion.
Roger Bailey wrote:
Google quickly finds pictures and information on the Braunschweig Cathedral sundial.http://commons.wikimedia.org/wiki/Image:Braunschweig,_Dom_St._Blasii_mit_Sonnenuhr.jpg The pictures show a dial with the words Anno 1716 across the top. A text reference identifies "Hans Geog Hartel" with the sundial is 1659. http://historydb.adlerplanetarium.org/signatures/edit.pl?edit_id=6954Is there an earlier sundial dating back to 1346 with the same characteristics, polar gnomon and equal hours?Can any of you scan Carl Roslund's BSS article and email me a copy? Regards, Roger
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