I would like to tell you about the pleasure I had working with Valentin Hristov
making several varieties of his Shepherd's sundials. I was amazed at his
ability to quickly tweak the software to make the sundials much easier to
fabricate using a laser engraver. I hope you all take the time to evaluate his
"Shepherd's house" style sundial program. I have constructed several versions
of his great sundial idea and love all of them. Thank you for sharing your
great sundial idea with this group, Valentin. Your work is outstanding!
Art Krenzel, P.E.
PHOENIX TECHNOLOGIES
10505 NE 285th Street
Battle Ground, WA 98604 >
>
> Today's Topics:
>
> 1. Shepherd's sundial design (Valentin Hristov)
>
> Dear sundial friends,
>
> In the beginning of August I shared with Art Krenzel the idea for an
> interesting design of Shepherd's sundial and he encouraged me to make it
> public.
>
> Attached is a picture of SH (Shepherd's House). The model is made by
> using the normal paper for laser printer. Therefore the vertical walls
> are not completely flat. If you use wood to make such a model, then the
> accuracy of reading the time would be much better.
>
> I like to include the EOT and Longitude corrections in my sundials and
> therefore the walls contain the four combinations of the two options for
> the period of the year (Jan-Jun and Jul-Dec) with the two options for
> the day period (morning and afternoon).
>
> Perhaps the chimney is a very important part of the dial :-). It allows
> an easy rotation (by one hand!) in order to orient the Shepherd's House
> properly. The user has simply to hide the side shadows of the vertical
> edges of the corresponding wall and then the wall is perpendicular to
> the sun direction!
>
> I hope you will like this design.
>
> More sunny days!
>
> Valentin Hristov
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