Where To Buy Solar Eclipse Glasses
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If you have already purchased eclipse glasses, there are ways to test whether your glasses are safe to use. If you haven't purchased eclipse viewers yet, be sure to purchase a pair from one of the manufacturers or vendors that have been approved by the American Astronomical Society. If you're looking to buy eclipse glasses online, try to buy directly from one of the approved vendors (opens in new tab).
When it comes to solar-eclipse glasses and other solar viewers, it's important to ensure that the product you're using is safe and effective at blocking harmful radiation from the sun. Just because something looks like suitable eye protection doesn't mean it's safe to use. Even if a product is advertised as a solar viewer, it's important to look for a label that says ISO, which stands for the International Organization for Standardization.
The ISO is an independent organization that writes safety and quality standards for all kinds of things, including eyewear, health care, food production and more based on a broad consensus of the scientific community. If you find eclipse glasses or other solar viewers that aren't labeled ISO, then they aren't guaranteed to protect your eyes the way they should.
Most ISO-approved eclipse glasses use solar filters manufactured by AstroSolar and Thousand Oaks Optical, Rick Fienberg, press officer for the American Astronomical Society (AAS), said. However, several different retailers sell eclipse glasses and handheld filters that are approved by the ISO, he noted.
Sunglasses are typically made of glass, plastic or some kind of polycarbonate material, while solar filters are made of one of two materials: polyester film coated in aluminum, or something called \"black polymer,\" Fienberg explained. Most eclipse glasses and solar viewers use the black polymer, which is a flexible resin infused with carbon particles. Both types of filters will reduce visible light down to safe levels.
Welders planning to observe the solar eclipse may or may not be in luck, as some welding filters will adequately protect your eyes from the sun. But, please, double-check to make sure that the goggles you intend to use are the right kind.
If you're watching the eclipse from the path of totality, you should absolutely remove your eclipse glasses during totality. \"In fact, if you keep your filters on during totality, you won't see anything\" because they block out almost all light, Fienberg said.
However, if you're watching the partial solar eclipse outside the line of totality, you'll need to keep them on the entire time. If you take them off, not only do you risk burning your eyes, but you also won't be able to see the eclipse.
\"Even if you do have a solar filter and watch the sun turn into a thin crescent, it's nowhere near as exciting as a total eclipse, because you miss all the really spectacular phenomena that are associated with totality. It doesn't get dark, you don't see the corona, you don't see bright red prominences of gas jetting off from the edge of the sun. It's just not the same at all.\"
Editor's Note: If you snap an amazing picture of the July 2, 2019 total solar eclipse and would like to share it with Space.com's readers, send your photos, comments, and your name and location to spacephotos@space.com.
Calling all public librarians! The STAR Library Network (STAR Net), managed by the Space Science Institute, is offering free eclipse glasses along with supporting information, training, and ideas for activities to conduct at eclipse events at U.S. public libraries. Learn more, and register to participate, on the Solar Eclipse Activities for Libraries (SEAL) website.
Numerous other astronomy- and science-related enterprises and organizations sell eclipse glasses made by the companies listed above. If you buy from any of the following businesses, you know you are getting ISO-compliant safe solar viewers:
If you bought or were given eclipse viewers at a science museum or planetarium, or at an astronomy trade show, again you're almost certainly in possession of ISO-compliant filters. As long as you can trace your filters to a reputable vendor or other reliable source, and as long as they have the ISO logo and a statement attesting to their ISO 12312-2 compliance, you should have nothing to worry about. What you absolutely should not do is search for eclipse glasses on the internet and buy whatever pops up in the ads or search results. Buy from one of sources listed here instead.
The following product includes a safe solar filter and a set of Velcro dots that enables you to temporarily secure the filter over the lens(es) of your smartphone camera. Using the accompanying Solar Snap app, which is available for free in versions for iPhones and Android phones, you can then choose appropriate exposure settings to shoot photos of the uneclipsed, partially eclipsed, or annularly eclipsed Sun. You can use the app to capture images of the totally eclipsed Sun, too, but you'll need to remove the filter during totality or your images will be blank.
Disclaimer: We cannot commit to listing every company or organization that sells or gives away safe eclipse glasses and/or handheld solar viewers, as there are literally hundreds, perhaps even thousands, of such suppliers, including science museums, planetariums, observatories, university astronomy departments, primary and secondary schools, amateur astronomy clubs, convention and visitor bureaus, tour operators, large stores, small shops, and more. We reserve the right to list only major retailers and organizations with significant national or regional distribution. Before buying or accepting eclipse glasses or handheld solar viewers, ask who made them or imported them. Be wary if you don't get a clear answer and/or if the supplier isn't listed on this page.
Canada - Please select only Priority Mail or Express Mail shipping if you are planning to use the eclipse glasses for the June 10, 2021 annular eclipse!This is the only way they will have a chance of reaching you in time!
Note: If your eclipse glasses or viewers are compliant with the ISO 12312-2 safety standard, you may look at the uneclipsed or partially eclipsed Sun through them for as long as you wish. Furthermore, if the filters aren't scratched, punctured, or torn, you may reuse them indefinitely. Some glasses/viewers are printed with warnings stating that you shouldn't look through them for more than 3 minutes at a time and that you should discard them if they are more than 3 years old. Such warnings are outdated and do not apply to eclipse viewers compliant with the ISO 12312-2 standard adopted in 2015. To make sure you get (or got) your eclipse glasses/viewers from a supplier of ISO-compliant products, see the American Astronomical Society (AAS) Reputable Vendors of Solar Filters & Viewers page.
An eclipse is a rare and striking phenomenon you won't want to miss, but you must carefully follow safety procedures. Don't let the requisite warnings scare you away from witnessing this singular spectacle! You can experience the eclipse safely, but it is vital that you protect your eyes at all times with the proper solar filters. No matter what recommended technique you use, do not stare continuously at the sun. Take breaks and give your eyes a rest! Do not use sunglasses: they don't offer your eyes sufficient protection. The only acceptable glasses are safe viewers designed for looking at the sun and solar eclipses. One excellent resource on how to determine if your viewers are safe can be found here: -safety/iso-certification
Pinhole and Related Projection Methods - Pinhole projectors and other projection techniques are a safe, indirect viewing technique for observing an image of the sun. These provide a popular way for viewing solar eclipses. One viewing technique is to project an image of the sun onto a white surface with a projecting telescope. This is explained further here:
Besides eye protection during solar eclipse viewing, one needs to pay attention to their personal needs and surrounding. Below are some additional safety tips for eclipse observers before, during and after the August 21, 2017 solar eclipse.
Espenak recommends that people stick to the AAS's approved list of companies that manufacture and/or sell eclipse glasses and handheld solar viewers, which have been verified by an accredited testing laboratory to meet the ISO 12312-2 international safety standard.
Espenak said that there isn't any way to tell for certain if a set of eclipse glasses are counterfeit, but one indictor is if you are able to see something in the glasses other than the sun, which is why for now, the AAS suggests sticking to the current list of manufacturers when buying glasses.
The consequence of wearing glasses that aren't specially made to deal with the visible light from a solar eclipse and invisible radiation could be \\\"serious eye injury, perhaps even blindness,\\\" according to the AAS, which also noted that special-purpose solar filters are many thousands of times darker than ordinary sunglasses. 59ce067264
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