Thank you all for your kind answers, tips and patience - those were very helpful and I found the data I was looking for. However the other question remains unanswered and I would very much like to help my freinds.
So the second one again: 2. A friend of mine is helping a student in an attampt to reconstruct an old missing dial. They need a software which allows to make an animation of a shadow's path over the dial. Is there anything that would help them? -- Best regards Darek Oczki 52N 21E Warsaw, Poland GNOMONIKA.pl Sundials in Poland http://gnomonika.pl --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
