How to make a pinhole viewer for the 2024 eclipse

OK, you want to view the Sun or an eclipse, but you don’t have an approved solar filter for your telescope. Maybe you don’t even have a telescope. No problem! I’ll bet you have a cardboard box. That and a few common supplies will let you build a pinhole viewer that you can use toContinue reading “How to make a pinhole viewer for the 2024 eclipse”
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