Pascal Hilkens Astro Page
Personal blog to promote (solar) astronomy and other related sciences.
Pascal Hilkens Astro Home Page
Pascal Hilkens Astro Home Page
WHO AM I?
Usefull Links
Solargraphy
Helios Astronomy Club
Saturday, June 20, 2020
Pinhole cameras all sizes
Making your own solargraph with all kind of pinholecans. Size doesn't matter!
Smallest 25cl and biggrzst 100cl or 1liter!
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