Hello Brent, There is a very simple solar tracking sundial in my province, Limburg in Flanders (Belgium). It is siutated in the city of Maaseik. It has no sophisticated electro-mechanical tracking system. See on my website the page: http://www.wijzerweb.be/maaseik002A.html
Translation of the Dutch text of the webpage. The pictures (click the thiumbnails to enlarge) alone are already clear. Maaseik Monastery Garden of the Canons Regular of the Order of the Holy Cross (Croisiers). Sphere sundial Year: 1953 Design: Anthony van Dooren, croisier-geography teacher Restoration 2003: Julien Lyssens, president Sundial Association of Flanders (Belgium) Motto: none Description The sundial has the look of a globe. Its axis is tilted to the north at an angle of about 51 ° (the latitude of Maaseik) with the horizontal plane. Meridian lines serve as hour lines. The meridian line of Maaseik is the 12-hour line. It is directed to the south. An accessory device has a hollow pipe and four supports. This device is placed so that the sun shines through the pipe and a spot of light cast on the sphere. The meridian that runs through the light spot indicates the hour. The spot indicates also the place on the world where at that time the sun was right above the head of the residents (the zenith). On the photo (taken on May 28, 2003) it is a few minutes after 16 hours (solar time in Maaseik). The sun is in the zenith in the Atlantic, northeast of the Caribbean. Willy Leenders Hasselt in Flanders (Belgium) Visit my website about the sundials in the province of Limburg (Flanders) with a section 'worth knowing about sundials' (mostly in Dutch): http://www.wijzerweb.be Op 16-mrt-2011, om 21:50 heeft Brent het volgende geschreven: > Hello; > > I have an idea to build a mechanical sundial. > > It would have a moving gnomon that would track the sun. > > If the gnomon was a hollow pipe, a spot of light would > shine out of the bottom that could be used to indicate a > time and date. > > With all of the photo voltaic systems available now the > hardware is fairly easy to find. > > I'm thinking I could use a simple dual axis photo sensor > tracking device such as this: > > http://cgi.ebay.com/Complete-Solar-Tracker-Sun-Tracker-Kit-/400187219850 > > Has anyone seen a sun dial like my idea before? > > I Googled solar tracker and they also talk about a > chronological tracker. That rotates one axis at the speed > of the earth but in the opposite direction. That would make > a fun sundial as well. > > Modern technology offers lots of new possibilities for > sundials. Is anyone trying new designs? > > thanks; > brent > > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial >
--------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
