Re: EOT with Longitude correction?(2)
John, One of those programs is the good old Dialist. Sonne from Helmut Sonderegger is an other that serves your question. Thibaud At 22:39 05-07-2004, John Carmichael wrote: Hello All: Does anybody know if there is a program, spreadsheet or website that will calculate EOT values corrected for specific longitudes in either a graph or a table? Thanks John John L. Carmichael Sundial Sculptures 925. E. Foothills Dr. Tucson AZ 85718 USA Tel: 520-6961709 Email: [EMAIL PROTECTED] Websites: Sundial Sculptures: http://www.sundialsculptures.com Stained Glass Sundials: http://stainedglasssundials.com - Th. Taudin Chabot, home email: [EMAIL PROTECTED]
Re: Kitt Peak under threat from wildfires
Hi Warren, You've got your observatories mixed up. All the mountains around here have observatories. Kitt Peak is safe (for now). There are no fires on the mountain.But the large observatory on nearby Mt. Graham is threatened and the fireis only one mile away. It's been evacuated but they have lots of firefighters working on it so hopefully they can save it. - Original Message - From: Warren Thom To: sundial@rrz.uni-koeln.de Sent: Monday, July 05, 2004 2:50 PM Subject: Kitt Peak under threat from wildfires Hi All, It was just reported on our news that Kitt Peak is in danger from wild fires near Tucson Arizona. NASS visited there during their 2002 meeting. John Carmichael had done a lot ofthe data plotting on the shadow of the Helioscope there. It hasover 20 telescopes on the peak. Plus the Mayall Sundial. What reports do you get John? Warren Thom
Re: Turtle Bay Sundial Bridge opens
If they just use the tip of the angled pieceas the gnomon (or nodus) and forget about using the edge of angled piece, then it could work. - Original Message - From: Anselmo Perez Serrada [EMAIL PROTECTED] To: 'Sundial List' sundial@rrz.uni-koeln.de Sent: Monday, July 05, 2004 2:54 PM Subject: Re: Turtle Bay Sundial Bridge opens Robert Terwilliger wrote: The dial is included in the NASS Register of North American sundials. California / Redding / #518 http://sundials.org/registry/ Bob I see, therefore I believe. Show me the hour lines and how they coped the 'small problem' that the gnomon does not point at the NCP and I'll believe it is a *true* sundial. Greetings, Anselmo - -
Re: EOT with Longitude correction?
Hello Patrick: Thanks for mentioning GS Studio site. I didn't know it did that. It certainly does everything!!! Martha Villegas told me about this other nice little website that doesn't do as many things as the GS Studio site, but is more user-friendly for doing this particular task since it only calculates the EOT values and Solar noon values and it only requires imputing the longitude and time zone. Real handy and easy to use. Check it out at: http://www.solar-noon.com/ John - Original Message - From: Patrick Powers [EMAIL PROTECTED] To: John Carmichael [EMAIL PROTECTED] Sent: Monday, July 05, 2004 2:37 PM Subject: EOT with Longitude correction? Message text written by John Carmichael website that will calculate EOT values You should also try Solar Calculator http://www.gcstudio.com/cgi-bin/sunpage That does what you want only using Meuus' FULL equations!! Patrick -
Re: EOT with Longitude correction?
John and others, Maybe I'm being dense, but isn't the variation of the equation of time with longitude masked (or at least complicated) by the similar variation, from one year to the next, due to our use of a 365-day calendar and occasional leap year? It's hard for me to imagine that the longitude deviation would ever need to be included in a sundial design. (But if one is observing a noon transit of the Sun in a specific year and calendar date for establishing a true north-south line, then it *would* be helpful.) -- Roger At 01:39 PM 7/5/2004 -0700, John Carmichael wrote: Hello All: Does anybody know if there is a program, spreadsheet or website that will calculate EOT values corrected for specific longitudes in either a graph or a table?
Re: EOT with Longitude correction?
On Tue, 6 Jul 2004, Roger W. Sinnott wrote: John and others, Maybe I'm being dense, but isn't the variation of the equation of time with longitude masked (or at least complicated) by the similar variation, from one year to the next, due to our use of a 365-day calendar and occasional leap year? It's hard for me to imagine that the longitude deviation would ever need to be included in a sundial design. (But if one is observing a noon transit of the Sun in a specific year and calendar date for establishing a true north-south line, then it *would* be helpful.) -- Roger At 01:39 PM 7/5/2004 -0700, John Carmichael wrote: Hello All: Does anybody know if there is a program, spreadsheet or website that will calculate EOT values corrected for specific longitudes in either a graph or a table? Roger, are you thinking John was looking for some annual correction to longitude, or the like? I thought he was simply looking to include the time-zone offset (Local to Standard) in the EOT table. Dave -
