I want to thank Jan for his excellent calculator. I still do not quite understand this sundial type, but I built some models from his calculations and they worked beautifully!
I heard he thinks about .dxf output - personally I would suggest .svg, because it is an open format. However, I do not know how well known it is in the sundial community Hannes Jan Bielawski schrieb: > Greetings. This is my first post to this forum so expect a few > threading booboos before I get it right :-) > > I haven't built a single sundial in my life but few years ago I got > interested in them through Rene Rohr's book "Sundials: History, > Theory, and Practice". I found portable self-orienting dials esp. > interesting. > > Some time later I came across Yvon Masse's web site where he describes > a couple of mean time analemmatic sundials. I really liked his second > design > (at http://pagesperso-orange.fr/ymasse/gnomon/anmn2.htm ) > and decided to construct it. Problem: program to compute this sundial > is nowhere to be found. So I decided to write one - the thing has > unexpectedly turned into a web page programming exercise. > > If you are interested, here is a URL to my web page containing the program: > http://a1.homelinux.com/cgi-bin/msundial2.cgi > > Since it runs directly on that web page, it runs on any platform > (Linux, Mac, Windows) - all it needs is a decent modern browser like > Firefox. The output it produces consists of an accurate image > representing the dial and (optionally) a list of exact coordinates of > all the relevant elements. > > Under the "Help" link there is a really long-winded explanation of the use. > > The interesting thing about this sundial (of the analemmatic central > projection type) is that the correction for the equation of time is > built directly into its standard gnomon movement. > > I'm not sure if the type of output the program produces is useful so > I'm open to suggestions on that one. What I included there - an image > and an optional exact coordinate list - seemed reasonable to me but > I'm no expert on this. > > Cheers, > -- Mag. Hannes Kuehtreiber Rans 15a / A-6071 Aldrans Österreich http://www.kleine-monumente.at.tf --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
