Hello Donald,
At my fist look, your method is correct. Anselmo Perez Serrada made a
spreadsheet to calculate inclining and deviating analemmatic sundials.
There you could control your results. I do not know his web site but I
have this spreadsheet. Maybe somebody of this list knows Serrada's
website to download the newest version.
On my website there is only software "Alemma", which calculates
different horizontal and inclining analemmatic sundials but not deviating
Regards
Helmut Sonderegger
www.helson.at
Am 08.09.2012 04:12, schrieb Donald Christensen:
Will an analemmatic sundial work on a slope?
I've designed a sundial on a slope but I'm not sure if it will work.
http://content.screencast.com/users/dchristensen777/folders/Default/media/0a769c4b-d61c-4f5d-b187-5b74dbc56e07/1.jpg
This is a pic of an equatorial dial. I have projected the lines down
to draw an analemmatic sundial for a horizontal surface. The sunlight
strikes the blue gnomen on the equatorial dial. Where it hits the
gnomen, I project it down (red) to draw the month line. The shadow
then strikes the 1pm and I project that down as well.
http://content.screencast.com/users/dchristensen777/folders/Default/media/6abf010e-8416-41a3-ba75-f69f63d0109f/2.JPG
This is an analemmatic sundial designed on a horizontal surface. I
have projected all hour and month points down to where they intersect
on the gray slope.
http://content.screencast.com/users/dchristensen777/folders/Default/media/5354cc54-f058-4854-bb3a-844a9b8fa89f/3.JPG
This is the analemmatic sundial designed for a slope.
I'm unsure this will work. I'm confident that I projected the lines
correctly. A person that stands on the month line will be standing
upright. They won't be perpendicular to the ground. Of course a gnomen
that is perpendicular to the slope won't work. However I'm wondering
if a vertical gnomen will work
Cheers
Donald
0423 102 090
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So there!
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