4.57″ ID Orion Full Aperture Solar Filter

Designed to fit snugly over the aperture of your telescope, this optical glass solar filter with a 4.57″ inside-diameter blocks 99.999% of incoming sunlight, allowing you to safely observe sunspots and solar granulation in the Sun’s photosphere. The Sun appears in a natural, whitish color. The glass elements are machine-polished and triple-coated with nickel-chromium stainless steel for a scratch-resistant surface. Each filter has three nylon thumbscrews to ensure a snug fit to the front of your telescope or binocular. The thumbscrews complement the press-fit foam lining inside the filter’s durable aluminum cell to accommodate diameters up to 1/4″ smaller than the nominal size. A tight press fit is still required for safe solar viewing. Lifetime limited warranty.This full-apertrue glass solar filter fits the Orion 102mm Maksutov-Cassegrain Telescope, Orion AstroView 100 Equatorial Refractor Telescope, Orion SkyView Pro 100 Refractor Telescope, Orion 80ED Refractor Telescope, and other telescopes with a 4.57″ diameter dew shield. CAUTION: Never look at the Sun, either directly or through a telescope, without a professionally made protective solar filter installed that completely covers the front of the instrument, or permanent eye damage could result.

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4.57″ ID Orion Full Aperture Solar Filter

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