this post was submitted on 06 Apr 2024
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Astronomy

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So I bought 2 sets because it looked like one set was briefly lost in the mail and this past week I got an email from Amazon that said one set I bought were “fakes.”

  • Both sets have printing that matches legitimate manufactures.
  • The “legitimate” set have all black filters (not the metalized filters I am used to like Thousand Oaks Optical) the “fakes” have the metalized filters.
  • Both sets of glasses have the same transmittance as the Thousand Oaks filter material I use on my telescope and cameras.
  • The build quality of the “legitimate” glasses is quite a bit worse than the “fakes” with the two layers of paper being misaligned

So, what I suspect is that I actually received a crappy set of “real” glasses and a well made set of counterfeits, this seems in line with the press release made by the American Astronomical Scociety.^[0]^

Some of these newly identified counterfeits are indistinguishable from genuine Qiwei products and appear to be safe. Others look like Qiwei’s eclipse glasses, but when you put them on, you realize they are no darker than ordinary sunglasses. So, these products are not just counterfeit, but also fake –– they’re sold as eclipse glasses, but they are not safe for solar viewing.

So, did anyone get unlucky enough to get some ‘real-fake’ glasses? An did anyone get a set of legitimate glasses with the non-metalized filter?

^[0]^ https://aas.org/press/american-astronomical-society-warns-counterfeit-fake-eclipse-glasses

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[–] Kolanaki@yiffit.net 7 points 7 months ago (2 children)

Are pinhole glasses safe? Just a pinhole made between two pieces of cardboard? We made those when I was a kid, though we never got to see an eclipse.

[–] nik282000@lemmy.ca 20 points 7 months ago

You can use a pinhole to project an image of the sun onto a sheet of paper but not directly as glasses. Look up a 'pinhole projector' you can make a pretty good one with an Amazon box.

[–] Karyoplasma@discuss.tchncs.de 17 points 7 months ago* (last edited 7 months ago) (1 children)

In case this is not sarcasm: Do not use selfmade glasses to observe the eclipse. It will temporarily or even permanently blind you.

Edit: I misunderstood. Pinhole projectors are safe. Just make sure you don't accidentally look directly into the sun.

[–] Kolanaki@yiffit.net 3 points 7 months ago* (last edited 7 months ago)

I can't see it anyway from my part of the world :( I was just curious because it doesn't seem like it would be safe, but it was literally taught to me in elementary school.