Spectrum 3.25" Full Aperture Film Solar Filter 73-79mm

This premium full aperture thin film solar filter enables safe, direct solar observation by blocking 99.999% of the Sun's visible light while maintaining the telescope's full aperture for optimal daytime viewing. The filter features a durable 0.002" thick black plastic polymer substrate with single-layer absorptive design, and minor warps or wrinkles will not affect solar image quality. Designed for refractors, spotting scopes, and binoculars with tube diameters of 73mm to 79mm, this filter displays the Sun in natural yellowish-orange hues and is suitable for visual observing and imaging of sunspots and solar features.