Pascal Hilkens Astro Page
Personal blog to promote (solar) astronomy and other related sciences.
Pascal Hilkens Astro Home Page
Pascal Hilkens Astro Home Page
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Solargraphy
Helios Astronomy Club
Friday, December 15, 2017
Pinhole Camera Ready
This year I made 5 pinhole camera's to collect Solarbeams with Solargraphs as an end result ... hopefully.
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