Diese Nachricht wurde eingewickelt um DMARC-kompatibel zu sein. Die eigentliche Nachricht steht dadurch in einem Anhang.
This message was wrapped to be DMARC compliant. The actual message text is therefore in an attachment.
--- Begin Message ---I look forward to seeing this article and the design of your volvelle! What I would be ideal for me would be a portable device that would align with the sun (azimuth) and read off the time for the date at that location. If the altitude is measured too, I believe the date would be inferred too. Finding the orientation of the meridian is a problem if this device is frequently moved. Have you seen this? http://www.dickkoolish.com/rmk_page/suncalc.html > On Jul 20, 2024, at 4:43 PM, Fred Sawyer <fwsaw...@gmail.com> wrote: > > At the recent NASS conference in Vancouver I introduced a new variety of > azimuthal volvelle sundial based on the solution to this very question. At > some point it will appear in an article in The Compendium. > > Fred Sawyer > > > > On Sat, Jul 20, 2024 at 10:02 AM John Goodman via sundial > <sundial@uni-koeln.de <mailto:sundial@uni-koeln.de>> wrote: >> Diese Nachricht wurde eingewickelt um DMARC-kompatibel zu sein. Die >> eigentliche Nachricht steht dadurch in einem Anhang. >> >> This message was wrapped to be DMARC compliant. The actual message >> text is therefore in an attachment. >> >> >> ---------- Forwarded message ---------- >> From: John Goodman <johngood...@mac.com <mailto:johngood...@mac.com>> >> To: Alfred Galvagnon <galvag...@gmail.com <mailto:galvag...@gmail.com>> >> Cc: Sundial List <sundial@uni-koeln.de <mailto:sundial@uni-koeln.de>> >> Bcc: >> Date: Sat, 20 Jul 2024 10:01:38 -0400 >> Subject: Re: Azimuth Calculation >> Thanks for the reference. My ultimate objective is to find the sun's hour >> angle on a given day, in a given location, when it reaches a selected >> azimuth. >> >> If I understand this paper, it's starting with equatorial coordinates and >> calculating an azimuth, which is sort of flipping my problem around. >> >> > On Jul 19, 2024, at 2:56 AM, Alfred Galvagnon <galvag...@gmail.com >> > <mailto:galvag...@gmail.com>> wrote: >> > >> > Maybe this article will help. >> > >> > https://www.academia.edu/32880342/Non_current_ephemeris_for_approximated_calculations?source=swp_share >> > >> > Alfonso Pastor Moreno >> > galvag...@gmail.com <mailto:galvag...@gmail.com> >> > --------------------------------------------------- >> > https://lists.uni-koeln.de/mailman/listinfo/sundial >> > >> >> --------------------------------------------------- >> https://lists.uni-koeln.de/mailman/listinfo/sundial >>
--- End Message ---
--------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
