While there is nothing extra-dangerous about light from the Sun during an eclipse, excitement can override our natural instincts to avoid staring at the Sun. The retinas inside your eyes can be damaged if you look at the Sun, even briefly. Since your retinas do not have any pain receptors, you will not be aware that this is happening. Usually the damage is temporary, but if you stare long enough, it can be permanent.
So how do I observe the eclipse safely?
The only safe way to look directly at the Sun during an eclipse is through special-purpose solar filters that comply with the transmittance requirements of the ISO 12312-2 international standard. Eclipse glasses provide the easiest way of protecting your eyes. Their filtered lenses, which are almost completely opaque, make it possible to look at the Sun for up to a few minutes at a time, any time of the year. Always make sure that the filter is fully intact. There should be absolutely no holes, cracks or peeling.
Where can I get eclipse glasses?
You can get eclipse glasses for free during our Eclipse Fair and Viewing Party on April 8th (while supplies last). If you can't make it to our event, there are other options:
- The American Astronomical Society (AAS) has a list of trusted suppliers of eclipse glasses: link
- Our partners at Eclipse Quebec have also provided a list of places to purchase eclipse glasses in Quebec (French only): https://www.eclipsequebec.ca/observer-de-maniere-securitaire/#lunettes
- In Montreal, you may also be able to get eclipse glasses through 45 of the city's public libraries while supplies last.
