SAFE FOR DIRECT SOLAR VIEWING (CE & ISO CERTIFIED)
Safely view the sun anytime and during all partial phases of an eclipse (viewer required for all phases of annular eclipse). Our exclusive high-quality substrates provide superior safety features, sharper solar images, and pleasing orange solar image. Custom printing available on orders of 5,000 or more. We do not use Mylar. More than 20 million sold.
Beware of companies that copied our products and literature. In some cases they were previous employees with entry-level skills and no technical expertise in optics or astronomy. They are not affiliated with Thousand Oaks Optical in any way and have no rights to our literature and certifications for CE and ISO. We have been manufacturing solar products since 1979 and have over 35 years of experience in astronomy and safe solar observation.