One of my most intense vacations was about a solar eclipse. My family decided to travel all the way out to the Cook Islands in the middle of the Pacific Ocean in 2010 with a company that specifically organizes trips around eclipses.
It was a big trip with a lot of associated costs, but the most important purchase was just $5: eclipse glasses. They often feel like flimsy little things, but those devices are key to being able to look at a solar eclipse without harming your eyes.
On April 8, people all around the contiguous United States will have a chance to see a solar eclipse, with a path stretching from Texas to Maine. The anticipation is certainly building. Google searches for "solar eclipse" have been steadily rising since December, with particular interest in the states on its path, including Arkansas, Indiana and Ohio, and Airbnb reported a 1,000% increase in searches for stays along the path. Delta even launched a special eclipse flight to view the event.
The last time a total solar eclipse passed through the United States, in 2017, the rush of excitement also brought scarcity and scams to the eclipse glasses market. Many places ran out of glasses to sell before the eclipse, and there were cases of counterfeit eclipse glasses. For example, Amazon ended up giving refunds to customers who had unknowingly purchased fake solar eclipse glasses.
Now, getting fake solar eclipse glasses can come with a bigger cost than the $10 you spent on Amazon. Looking at an eclipse without adequate protection can damage retinas and cause blindness, per the American Academy of Ophthalmology.
Obviously that's something we all want to avoid, and it would be a shame to coordinate all the right plans to get yourself and your family to the totality path just to forget to have the glasses ready. So, here's some pointers on eclipse glasses.
How to find eclipse glasses
The main thing to look for when shopping for eclipse glasses is an "ISO" label, reports Space.com. That stands for the International Organization for Standardization, an independent organization that provides safety and quality standards. If glasses have this label, that should mean they follow the ISO's guidelines, which touch on the size, how much light is filtered and labels.
There are many manufacturers and vendors of eclipse glasses, which can make it hard to figure out where to go. Thankfully, making your life easier, the American Astronomical Society published a list of reputable ones, which include major retailers like Lowes, Walmart and Staples.
The prices aren't astronomical. You can get 50 at Staples for $150 or two for $11 at Walmart. Walmart even offers an eclipse "bundle" that includes a pack of glasses, a camp chair, an ice cooler, Cosmic Brownies and more to set the scene for your viewing party, for $188.
You can also get eclipse glasses for free at some public libraries, so that's a good place to check, too, and glasses retailer Warby Parker is offering free ISO-certified eclipse glasses at their stories while supplies last.
That AAS list also includes places to get solar filters for telescopes, binoculars and camera lenses, as well as for smartphones, so you can capture the memory and see it even more up-close.
AAS warns against searching for eclipse glasses at online marketplaces like Amazon, eBay and Temu. They further advise using their list to check if a seller is reputable before buying glasses online.
"Make sure that you’re buying glasses from a trustworthy source. Look into the vendor and manufacturer before you purchase," Katarina Schmieder of the Better Business Bureau of Upstate New York told WSYR.
Do you really need eclipse glasses?
Yes!
As Rick Fienberg of the AAS told Space.com, typical sunglasses let in 10% to 20% of daylight, which is "still way too bright," while "the filters that are made for looking at the sun are typically 100,000 times darker."
But if you really run into problems getting eclipse glasses, there are some workarounds. You can make a pinhole projection to see what the sun shape looks like on the ground, for example, using a pasta colander. The big, big warning is to not look at the sun through the pinholes, just look at the projection on a nearby surface.
And when do you need to use eclipse glasses?
They're necessary while an eclipse is in partial progress, so when the moon has begun to cross the sun and in the period after totality. During totality, however, you can take the glasses off.
"When the moon completely covers the sun’s bright face and it suddenly gets dark, you can remove your solar filter to watch this unique experience," says the American Academy of Ophthalmology. "Then, as soon as the bright sun begins to reappear very slightly, immediately use your solar viewer again to watch the remaining partial phase of the eclipse."
Totality this time around is likely to be pretty fantastic, with over 4 minutes of it in some places. It is a breathtaking experience that I highly recommend, and watching the path of the moon through eclipse glasses is a big part of understanding the beauty of it all.
And as for my family's big Cook Islands eclipse trip? We had our glasses, but clouds blocked our view of the eclipse. You can buy eclipse glasses, but you can't buy a clear sky.
