NASA [nasa.gov] links to the American Astronomical Society [aas.org] for a list of North American solar film manufacturers that were approved to ISO 12312-2 and also for approved vendors of those solar filters.
"These include companies and organizations with which members of the AAS Solar Eclipse Task Force have had good experience as well as other companies and organizations that have demonstrated to our satisfaction that the products they're selling meet the safety requirements of the ISO 12312-2 international standard."
[Note: NASA and AAS both do not directly approve or certify any solar filter themselves. And as such there is no official NASA or AAS preferred solar filter. ISO certification from an American company is gonna be as good as you can get here.]
Daystar Filters, the filters sold on this B&H deal, are on the list of North American Manufacturers on the AAS website. And B&H is on the list of Authorized Dealers of Products Made in North America or Germany. 👍👍
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expiredSlickDealio posted Mar 18, 2024 3:28 PM
5-Pack DayStar Filters Solar Eclipse Glasses (Various)
from $4.50
$9.99
+ Free Shippingat B&H Photo Video
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So the question for you is - is it worth risking your permanent vision quality to save $5 from some random Amazon 3rd-party seller? Personally, I'd stick with B&H.
Welding glass/helmet/goggles works as well.
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The signs are all there, bro. the signs are all there
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Viewing with Protection - Experts suggests that one widely available filter for safe solar viewing is welders glass of sufficiently high number. The only ones that are safe for direct viewing of the Sun with your eyes are those of Shade 12 or higher. These are much darker than the filters used for most kinds of welding. If you have an old welder's helmet around the house and are thinking of using it to view the Sun, make sure you know the filter's shade number. If it's less than 12 (and it probably is), don't even think about using it to look at the Sun. Many people find the Sun too bright even in a Shade 12 filter, and some find the Sun too dim in a Shade 14 filter — but Shade 13 filters are uncommon and can be hard to find.
Viewing with Protection - Experts suggests that one widely available filter for safe solar viewing is welders glass of sufficiently high number. The only ones that are safe for direct viewing of the Sun with your eyes are those of Shade 12 or higher. These are much darker than the filters used for most kinds of welding. If you have an old welder's helmet around the house and are thinking of using it to view the Sun, make sure you know the filter's shade number. If it's less than 12 (and it probably is), don't even think about using it to look at the Sun. Many people find the Sun too bright even in a Shade 12 filter, and some find the Sun too dim in a Shade 14 filter — but Shade 13 filters are uncommon and can be hard to find.
also, don't buy glasses that say they are NASA approved. NASA does no such thing!
https://www.news-journalonline.c
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