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This premium solar filter is safe for photographs and views of the Sun. Slip your solar filter over telescopes, spotting scopes, cameras or any optical device. The aperture is off-center and mounted into an aluminum ring that slips over the sky end of your optical tube. Secure and center the filter with a nylon thumb screw and felt tab. Instructions for proper use and care for your Solar Filter insure a long filter life. When used properly, a natural yellow-orange image of the sun is viewed through the filter. Dependent on the size and strength of the optical device, you will see solar granulation (Sun's photo-sphere). Sunspots, planet transits, and a solar eclipse may be observed when present.