Hi all,
First of all, my congratulations to Helmut and Roger for the
spreadsheet... and for releasing it
as freeware in these mean ;-) times where everything is under patent laws.
Now, I would even dare to make a small suggestion for next versions: why
not including inclined
gnomons in order to create Foster-Lambert or Parent Dials or any other
arbitrarily inclined projection dial,
like the one that John asked about? I sketched it in a rudimentary
spreadsheet and it is very easy.
Concerning this topic, I strongly recommend you all the article on
Projection Sundials written by Bruno
Ernst, which you can find in Fer de Vries' web. It's just fan-tas-tic!
Greetings,
Anselmo
----- Original Message -----
From: "John Carmichael" <[EMAIL PROTECTED]>
To: "Sundial List" <sundial@rrz.uni-koeln.de>
Cc: "Frans W. MAES" <[EMAIL PROTECTED]>
Sent: Monday, April 15, 2002 6:15 PM
Subject: Sloping Analemmatics
> Hi All:
>
> I have a question.
>
> I use the Delta Cad macros to design analemmatics. These macros only
permit
> the design of analemmatics that have flat horizontal faces. But I need to
> design an analemmatic that is painted on cement that slopes slightly to
the
> south. Let's say the angle of slope is 3 degrees from horizontal and the
> latitude of the sundial is at 32.5 N.degrees.
>
> I thinking that if imput into the DC macro a false latitude of 32.5* - 3*
=
> 31.5 degrees that it would produce the correct drawing for the sloping
> sundial.
>
> Is my thinking correct on this?
>
> Thanks anyone
>
> John
>
> John L. Carmichael Jr.
> Sundial Sculptures
> 925 E. Foothills Dr.
> Tucson Arizona 85718
> USA
>
> Tel: 520-696-1709
> Email: [EMAIL PROTECTED]
> Website: <http://www.sundialsculptures.com>
>
>
> -
-
