NZ Sundial.

2009-01-05 Thread Tony Moss
Fellow Shadow Watchers, Many Thanks to all who have sent me a variety of good personal photographs and many useful references to this dial in New Zealand. What a wonderful service the SML provides. Tony M.

Re: NZ dial

2009-01-05 Thread Gianni Ferrari
Hello Tony, you can see some photos in http://www.flickr.com/ search : Sundial, Christchurch Botanic Gardens The sundials are two ! Other image in http://www.proulx.com/~bob/photo_album/2006-02-new-zealand/2006-02-20-christchurch-gardens/17.html Here I have read that the sundial was built in

NZ dial

2009-01-05 Thread Tony Moss
Fellow Shadow Watchers, A friend has just sent me a jpeg of a fine New Zealand dial in the Christchurch Botanical Gardens. He tells me the dial, which appears to be made of slate with a brass/bronze gnomon, is about 1 metre across and from the picture

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2009-01-05 Thread Jos Kint
Hello sun dialists, I have a question. As I said some months ago I want to calculate the earth's orbital eccentricity, using my sun dial. I tried it in two ways. First I followed the suggestion of Chris Lusby Taylor and used the Ptolemy model after finding aproximate values for the vernal