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An old trick to improve night vision. While looking for night sky object, look a bit askew. The color receptors are central and need brighter light. the rods are more mono, and more off center and responsible for low light viewing. When you look askew you activate the rods.
https://cdn.shopify.com/s/files/1/0561/3702/3644/files/eyeimage_480x480. 
?v=1643048691
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