Bill, I would certainly like to have a look at it, but don't normally have access to the Compendium. Can I find a picture of it somewhere on the net? Thank you very much,
Rudolf Hooijenga [EMAIL PROTECTED] ----- Original Message ----- From: <[EMAIL PROTECTED]> (...) > On page 30 of the NASS Compendium for September 2000 there is a diagram > of a self similar rosette pattern. If this pattern is reduced to an > appropriate size (say 1 inch diameter) onto transparent plastic and mounted, > with its plane parallel to the sundial surface, at the point where the nodus > would ordinarily be, it will serve the purpose of a nodus. Surprisingly, the > shadow it makes will be equally sharp and well defined regardless of the > distance to the dial plate. (...)
