Joe Sempik <[EMAIL PROTECTED]> wrote: > Last year I was fortunate enough to visit Bologna and see the meridian lines > at San Petronio's and at the Astronomical Museum, the former observatory. > The great meridian line at San Petronio's inspired fascination with almost > every visitor. It would be wonderful if a few more such lines were built > around the world to allow many more people the opportunity to see them and > to observe the movement of the earth in such a simple but elegant fashion.
This reminded me of a question I've long wondered: Are there any other cathedrals in Europe that emulated the noon mark in the Church of San Petronio, Bologna, Italy? I thought I recalled someone mentioning the existence of noon marks in Bergamo, Italy and one at Salisbury Cathedral, England; can anyone confirm these? By the way, there's an interesting photo of the pinhole-projected, partially eclipsed Sun crossing the meridian marker at the Church of San Petronio in _Sky and Telescope_, November issue, 1974, page 299. I would expect a similar opportunity to image a *crescent* Sun at local noon on this same noon mark when the 11 August 1999 solar eclipse occurs.
