Gian, thank you for posting the link to the new issue!
I was particularly taken by the lovely and simple polar dial/meridiana at
Certosa di Vedana.
I believe I am going to have to build one for my home; it will be a nice piece
for my front yard (South-facing.)
Can you or anyone else on the Sundial List recommend one of the several pieces
of software that have been graciously made available to us, that can most
easily create a plot of the analemma for a specific location on an equatorial
plane?
I have been experimenting with apertures and roughly sizing the piece, and it
works very well with a "pinhole" of 5 to 10 mm diameter and a centerline
distance of ~50 cm. Adding a 2 diopter lens (i.e., 50 cm focal length) sharpens
the solar image nicely, and still works fine at 25-30 degrees off axis, as it
would be at the solstices. That size would allow me to plot the curve on 11x17"
paper in one piece, making for easy transfer to the equatorial surface...
Still undecided about whether I should design it for civil noon or local solar
time. :{)
Dave Bell
N37.3 W121.97
Sent from my iPad
On Aug 19, 2013, at 6:37 AM, "[email protected]" <[email protected]> wrote:
> Dear friends,
> I am glad to inform you that number 2 of the Orologi Solari magazine can now
> be downloaded from http://www.orologisolari.eu.
>
> Here is the list of the articles:
> "The meridian line of Augustus" by Paolo Albéri Auber
> "The declining 'Doble Catenaria' sundial" by Riccardo Anselmi
> "Give me back the sundial" by Luigi Caccia
> "A sundial in the Vedana Certosa" by Giuseppe De Donà
> "The Latin and islamic astrolabe" by Leonardo Di Emanuele
> "Effect of refraction and dip of the horizon on sundials" by Gianni Ferrari
> "The Prof. Schilt test (1910 - 1999)" by Alessandro Gunella
> "Quirico Filopanti – 1812 - 1894" by Giovanni Paltrinieri
> All the articles are in Italian but a short sunnary in English is available.
> A "bonus" file can also be downloaded.
> Unfortunately we are experiencing some problems with the browser cache: if
> you have any problems when displaying the site pages please reload the page
> (F5 in Internet Explorer) in order to get the up-to-date page display.
> Greetings.
> Gian Casalegno
>
>
>
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>
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