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--- Begin Message ---Hello everyone, For some time now, I have been interested in meridian lines, also known as "camera oscura." Is there anyone on this list who is interested in this topic, particularly the history of these instruments, the theoretical works on them (especially those of the late Gianni Ferrari), and the astronomical contributions of solar observations made with these instruments? To avoid cluttering the list, you can also respond to me privately atcjeff1108-at-yahoo.fr Best regards, Jean-François Consigli
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