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 ...
• A light-tight container like a tin can (such as biscuit tins) or a sturdy cardboard box with fitted lids. (Light leaks can impact your negatives.) • Black spray paint (matte finish) if using a tin ...
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