Moon dial.

2014-05-13 Thread David
Dear All, I have had a request to construct a moon dial for a vertical east-facing wall. This is new territory for me. Can anyone point me in the direction of sources/computer programmes that would give me guidance? David Brown Somerton, Somerset, UK ---

Re: The GPS zero meridian club - a round up

2014-05-13 Thread Brooke Clarke
Hi Doug: I recently got a used CSI LGBX Pro DGPS Receiver. This is a CSI long wave beacon receiver with an integrated Ashtech 12 channel GPS receiver iwth an antenna that receives both of them. The display option with the most resolution is dddmm. and it seems to be good to less than one f

The GPS zero meridian club - a round up

2014-05-13 Thread Douglas Bateman
Many thanks to all who, as typical of the list, sent relevant and interesting posts. I would like to comment on some as follows: IM: the confluence website - crazy but yet more fun. RM: the old civil 'degradation' of accuracy of GPS was removed many years ago. Dedicated GPS receivers are more

Re: Copyright rules / Bill Gottesman stance

2014-05-13 Thread Frank King
Dear Paul et al, > Too bad there wasn't any sunshine > for the unveiling, as I see no > hint whatsoever of a shadow. It was a typical U.K. wet afternoon! You can see another pic at: http://www.cambridge-news.co.uk/Cambridge/Human-sundial-unveiled-on-Jesus-Green -commemorates-Cambridge-sculptor-

Re: Altitude dials as compasses

2014-05-13 Thread Mike Cowham
Dear Jim, I have just published a small book 'A Study of the Quadrant' that does have a few pages about the Gunter device. It has just 6 pages describing their use and functions with various photographs. Your book on 'The Astrolabe' was very useful to me in producing my book. Thank you. Another

Re: Using the moon to find south

2014-05-13 Thread Frank Evans
Greetings. fellow dialists, Astronomical purists may feel uneasy but the easiest way to find south if there are any buildings about is to look at the satellite dishes. Around here they point a little east of south and they presumably point near to south throughout the northern hemisphere. Fran

Re: Altitude dials as compasses

2014-05-13 Thread John Davis
Hi Jim et al, Sutton's quadrant was described at some length in a two-part article: M. Lowne & J. Davis: ‘A Horizontal Quadrant of 1658 by Henry Sutton; Part 1’, BSS Bull., 23(ii) 8-13 (Jun 2011).   with the second part in the following issue. Regards, John --- Dr