![]() ![]() ![]() "Special-purpose" means designed exclusively for looking directly at the everyday Sun. Before and after totality, and at all times outside the path of totality, you must use a special-purpose safe solar filter when looking directly at the Sun. During the North American solar eclipse of April 8, 2024, the roughly 115-mile-wide path of totality stretches from Mexico to Texas to Maine to eastern Canada - and at any location within that path totality lasts at most about 4½ minutes. This happens only within the narrow path of the Moon's umbra (dark inner shadow) during the brief total phase of a total solar eclipse. That exception is during totality, when the Moon completely blocks the dazzlingly bright face of the Sun. The #1 rule for observing a solar eclipse, or for looking directly at the Sun at any other time, is safety first.Īs noted on our main safety page, with one exception it is not safe to look directly at the Sun without a special-purpose safe solar filter. So we pivoted to suggest that you make sure you get (or got) your eclipse viewers from one of the suppliers listed on our Suppliers of Safe Solar Filters & Viewers page. But in the weeks before the August 21, 2017, "Great American" total solar eclipse, the marketplace was flooded by counterfeit eclipse glasses that were labeled as ISO-compliant when in fact they had not been properly tested and shown to be safe. We used to say that you should look for evidence that they comply with the ISO 12312-2 international safety standard for filters for direct viewing of the Sun.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |