An interactive page has been added to this website.
Earlier
I have discussed and answered to the questions by email. Now it is
possible to follow and take part in the conversation in public, too, here on the website.
Some phenomena in solargarphs pay attention and curiosity. Your comments and arguments are very welcome.
Helsinki, Finland. The exposure from September to 23rd of December 2007. Solargraph by Tarja Trygg.
What are these upper curves in the sky? Are they the moon´s paths?
Nowadays I am convinced that the moon´s path is visible also in the
solargraph. I have tried to catch the moon´s path during the full moon
by opening the pinhole in the evening and closing it in the morning.
Next night I repeated this without having very good result. But in this
solargraph there are several lines and what an interesting turn to the
opposite direction. I know that the moon´s path can go in different
route. The tracks of the Sun are the white lines and the lowest ones
come from December when the Sun is very low here in the northern
hemisphere.
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Solargrapher
By: Tarja Trygg () on 04:45 25-05-2008