n corresponds to the local zenith
and the outermost circle corresponds to the horizon. This design can
therefore show the entire heliodrome. A gnomonic projection can show only
part of it.
My design is intended for 52.2 N and your latitude is about 49 N. If you
print out the design it will work
Fax: 07234 942909
E-Post: siegfried.netzb...@epost.de
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-Original-Nachricht-
Betreff: Re: Heliodrome
Datum: 2019-03-18T14:20:41+0100
Von: "Frank King"
An: "fabio.sav...@nonvedolora.it"
Dear Fabio,
Many thanks for
Dear Fabio,
Many thanks for your photograph and
explanation. This is just what I
needed. I see that the heliodrome is
'the region of the celestial sphere
bounded by the two tropics and the
local horizon'.
I now appreciate that I have been
designing heliodromes for 40 years
without
So. a hippodrome is where the horses run (the racetrack), and a heliodrome
is where the sun runs? That is nice; I like it.
Rudolf Hooijenga
52-30N 4-40E
Van: sundial Namens
fabio.sav...@nonvedolora.it
Verzonden: zondag 17 maart 2019 20:17
CC: sundial@uni-koeln.de
Onderwerp: Heliodrome
Dear Frank
every sundial has an heliodrome but its limits change with the
orientation of the dial, its shape and other if it isn't plane.
I took a glance to the last sundials uploaded on Sundial Atlas in these
days and I found a photo that is right for us.
(IT16648, photo by Roberto In
