Hi Reinhold, The dial you cited is indeed a very nice one - but I would not call it a new type of sundial. The idea has been around for a while and in fact was the subject of a patent: on May 21, 1867 U.S. Patent # 64,892 was issued to Lloyd Mifflin for a mean time gnomon, consisting of a half analemma cut into a flat plate. Mifflin used this analemma in conjunction with an equatorial dial - just as Dietrich has.
Best wishes, Fred > ----- Original Message ----- > From: [EMAIL PROTECTED] > To: sundial@rrz.uni-koeln.de > Sent: Thursday, February 28, 2002 12:39 PM > Subject: A new sundial - type from Bremen! > > > Dear friends, > > may I invite you to have a look at a probably new type of sundial, > an analemmatic equatorial sundial with light-pointer, > built by my friend Dietrich Ahlers. > > His HALBE - ACHT - sundial > can be seen at the Homepage of Olbers-Planetarium Bremen as sundial of the > month March. > > Either you start at: > http://www.hs-bremen.de/planetarium > and choose bottom right <Sonnenuhr des Monats> (sundial of the month) > or go directly to: > http://planetarium.hs-bremen.de/planetarium/astroinfo/sonnenuhren/ahlers/ana > lem.htm > > Regards > Reinhold Kriegler > > * ** *** **** ***** ****** ******* > Reinhold R. Kriegler > Lat: 53° 06' 53'' N > Long: 8° 53' 54" E > -
