Turn your telescope, spotting scope, or DSLR camera into a solar scope! The EclipSmart Universal Folding Paper Solar Filter is a must-have accessory perfect for viewing or photographing the Sun and eclipses like the upcoming 2023 Annular Solar Eclipse and 2024 Total Solar Eclipse. Affordable, easy to use, and best of all, Solar Safe, this filter conforms to the ISO 12312-2:2015(E) international safety standard. The EclipSmart Universal Folding Paper Solar Filter works with your telescope, spotting scope, or DSLR camera with an objective barrel outside diameter of 75 to 100mm. The solar filter fits around your optical device with its adjustable side panels and secure in place with an elastic band. When you aren't using the filter, fold it flat and place it inside the reusable bag. If you use this filter with a DSLR camera, use the lens' sun shade to increase the lens diameter and aid in securing the filter with the elastic bands. This solar filter will fit the following Celestron telescopes and spotting scopes: PowerSeeker 60EQ, 70EQ, 80EQ and PowerSeeker 50AZ, 60AZ, 80AZS telescopes, AstroMaster 70AZ, 90AZ, 80AZS, 70EQ, and 90EQ telescopes, AstroMaster LT 60AZ, 70AZ telescopes, Travel Scope 50AZ, 60AZ, 70AZ, and 80AZ telescopes, AstroFi 90 telescope, StarSense Explorer 80AZ telescope, Ultima 18-55x65 and Ultima 20-60x80 spotting scopes, Regal M2 16-48x65 and Regal M2 20-60x80 spotting scopes, LandScout 12-36x60 spotting scope, TrailSeeker 16-48x65 and 20-60x80 spotting scopes, and the C70 Mini Mak Spotting Scope. EclipSmart solar products feature Solar Safe filter technology—the ultimate protection from harmful solar radiation, including IR and UV light, plus 99.999% of visible light. Celestron Solar Safe filter technology is SAFE for direct observation of the Sun and has been independently tested to conform and meet the transmission requirements of ISO 12312-2:2015(E), Filters for Direct Observation of the Sun.