Hi Kevin, Thanks for that change. An apparently similar problem seems to apply to the ‘Victorian EoT’ table when Longitude is zero. There are then listed EoT values of 23 and 24 mins in Jan and Feb.
You asked for input re formats on azimuth. I think that just as with the sign of the EoT there are conventions that grew up with gnomonics and conventions that arose within astronomy and navigation. If what you are providing is intended more as a resource for those interested in sundials then maybe Gianni’s view should prevail? I suspect your idea of a radio button for these would be the best option! Regards Patrick From: Kevin Karney Sent: Thursday, June 12, 2014 6:12 PM To: Sundial Subject: CORRECTIONS & Extensions to "A few new Tables for the Gnomonist..." Dear Friends Thanks for the positive comments! And thanks to Gianni Ferrari, Patrick Powers, Edward French and Jack Aubert for pointing out the MAJOR error in the Annual Equation of Time Table. It was giving EoT values across the table instead of down, which is an error I had corrected before - but had crept back in....! That has been corrected.... Many apologies Also, by popular request, I have changed the sign of EoT from the strict astronomical convention to the more usual gnomonical convention (the correction to get from sundial to local mean time). Gianni also wants Azimuth measured from the South... I am a 0 deg at North person. Any thoughts ? I will probably change things to give a radio button, so you can choose. I have had requests for a solar noon table and solar east/west table and a half-minute Victorian table - which I shall implement in due course Best wishes Kevin -------------------------------------------------------------------------------- --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
--------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
