Mac, I think my new software for calculating analemmatic sundials could be a help too. The analemmatic sundials may have an inclined dial plane or/and an inclined gnomon. Shadow paths are included. Also sundials of the Longwood-type are calculated. You can download a first beta-version from webpage http://webland.lion.cc/vorarlberg/280000/sun.htm The program needs Windows.
Better help files and better information will follow later. Feedback and hints on bugs would be appreciated! Helmut Sonderegger ----- Original Message ----- From: "Mac Oglesby" <[EMAIL PROTECTED]> To: "Sundial Mail List" <[email protected]> Sent: Tuesday, May 06, 2003 11:12 PM Subject: Heliodons > > Hello Friends, > > When I asked a diallist friend recently how to decide on the lengths > necessary for the shadow casters on a dual-gnomon Foster-Lambert > sundial, he suggested using a moving model with a light source to > simulate the sun. > > I recalled seeing the "Heliodon" at the Energy Center of the Pacific > Gas & Electric Company on the Saturday sundial tour during the NASS > meeting in San Francisco in 2000. (The tour is summarized on the NASS > website. Go to http://sundials.org and click on Conference News, > select 2000 - San Francisco, California from the drop-down menu, and > scroll down to the Saturday Sundial Tour link.) > > Info on heliodons may be found at many places on the internet (try a > google.com search), or look at: > > http://arch.ced.berkeley.edu/resources/bldgsci/bsl/heliodon.html > > and > > http://www.industarts.com/proto/heliodon/heliodon.html > > > > But, of particular interest for home use: > > http://www.leeric.lsu.edu/bgbb/7/ecep/drafting/d/app-b.htm > > where plans for a simple, elegant and inexpensive heliodon are presented. > > Best wishes, > > Mac Oglesby > Vermont, USA > - > -
