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- May 18, 1997
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NASA shares its eclipse viewing tips. Let me start. Don't stare directly at the sun with the naked eye...unless you are already used to doing that.
Eclipse viewing glasses and handheld solar viewers should meet all the following criteria:
Have certification information with a designated ISO 12312-2 international standard
Have the manufacturer’s name and address printed somewhere on the product
Not be used if they are older than three years, or have scratched or wrinkled lenses
Not use homemade filters
Ordinary sunglasses -- even very dark ones -- should not be used as a replacement for eclipse viewing glasses or handheld solar viewers
Eclipse viewing glasses and handheld solar viewers should meet all the following criteria:
Have certification information with a designated ISO 12312-2 international standard
Have the manufacturer’s name and address printed somewhere on the product
Not be used if they are older than three years, or have scratched or wrinkled lenses
Not use homemade filters
Ordinary sunglasses -- even very dark ones -- should not be used as a replacement for eclipse viewing glasses or handheld solar viewers