Best Time for Setting Sundials

2003-06-16 Thread John Carmichael
ting & reading times would avoid the early morning and late afternoon affects of maximum atmospheric refraction and would also avoid the compressed hourline markings that are close together at noon which make time estimation more difficult. Does anybody agree with my theory? Is there a best t

Re: Best Time for Setting Sundials

2003-06-17 Thread Anselmo P�rez Serrada
markings that are close together at noon which make time estimation more difficult. Does anybody agree with my theory? Is there a best time for setting sundials? You are right. Making a bit of mathematics it can be shown that the highest insensibility to errors is reached when the Sun crosses the

Re: Best Time for Setting Sundials

2003-06-16 Thread BillGottesman
ices, and least at the equinoxes. Bill Gottesman www.precisionsundials.com In a message dated 6/16/2003 4:23:40 PM Eastern Daylight Time, [EMAIL PROTECTED] writes: > > Does anybody agree with my theory? Is there a best time for setting > sundials? > -

Re: Best Time for Setting Sundials

2003-06-17 Thread BillGottesman
In a message dated 6/17/2003 10:45:30 AM Eastern Daylight Time, [EMAIL PROTECTED] writes: > Hi Bill > > I think you have convinced me that solar noon is the best time to set a > dial, but what is the best date? My off-the-cuff answer is any date is fine if you are using the solar noon meth

Re: Best Time for Setting Sundials

2003-06-17 Thread John Carmichael
6 PM Subject: Re: Best Time for Setting Sundials > I have given this question quite a bit of thought over the past 3 years, > because the focusing sundial I sell is readable to a few seconds. It will not live > up to its accuracy unless set properly. > If a dial is well made, and match

RE: Best Time for Setting Sundials

2003-06-17 Thread Roger Bailey
] Behalf Of Anselmo Perez Serrada Sent: June 17, 2003 3:42 PM To: sundial@rrz.uni-koeln.de Subject: Re: Best Time for Setting Sundials John Carmichael wrote: >I've often wondered if there is a best time of day to set a sundial using >the "Time method" (as opposed to the com