Greetings fellow dialists, I am a bit closer to understanding the laying out of Italian hours, thanks to correspondents. Jan Safar wants to instruct me in a method using an oblique gnomonic projection. Although I can just about cope with astrolabes and Weir's azimuth diagram I think I would rather not - no offence intended, Jan. Gianni Ferrari's method looks useful and he also directed me to Mac Oglesby's paper which seems to be following the method I thought of using points on the solsticial curves. I do not have a computer drawing programme but can easily find altitudes and azimuths (and declinations and EoT) on my pocket calculator (I must get into the twenty-first century before it is too late). Frank King's proposals need more of my attention. But at least I am more comfortable now, thanks to all.
Italian and Babylonian hours really are attractively different from the usual layouts. I hope we are to hear more of them. Frank 55N 1W --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
