Re: Needed: history of equation of time

2000-11-27 Thread John Davis
Hi Gordon, According to my research for the Sundial Glossary, Huygens was the first to publish an accurate EoT table in 1665, and he republished this in his "Horologium Oscillatorium" in 1673. Flamsteed calculated the first accurate English table in 1665, when he was only 19, but it was not publ

Sundial Formula Erratum in Meeus's Book

2000-11-27 Thread Mark Gingrich
Dial folk, Those who rely on the sundial formulae in the second edition (1998) of Jean Meeus's book _Astronomical Algorithms_ should be aware of the following erratum: On page 406, in the chapter titled "Calculation of a Planar Sundial", by R. Sagot and D. Savoie, in subsection (3) on vertical su

Re: Needed: history of equation of time

2000-11-27 Thread fer j. de vries
Hello Gordon, I possess a small book about EoT, mostly old tables. Tables of the Equation of Time for the Regulating of Clocks and Watches by a Sun-Dial Ex Libris Christopher St. J.H. Daniel 1993 Mr. Daniel is the chairman of the BSS. Best wishes, Fer. Fer J. de Vries [EMAIL PROTECTED] http:

Needed: history of equation of time

2000-11-27 Thread Gordon Uber
recommend a reference (preferably in English) on the subject? I understand that John Flamsteed and Christiaan Huygens published tables of it in 1666 and 1662, respectively. If anyone has copies of these tables, the tables (or citations to them) would be greatly appreciated. So far I have loc