- Wide compatibility: a standard thread of M28.5 x 0.6 fits 1.25 inch filters and works with many telescopes. It serves as a versatile Moon and planetary filter for beginners. - Improved contrast and detail: two optical glass pieces reduce light exposure, increase contrast, and allow viewing bright objects such as the Moon with increased clarity and reduced glare. - Anodized aluminum frame: the CPL filter uses precision-ground, highly polished optical glass and an anodized aluminum frame for exceptional durability. - Glare reduction: the polarizing filter allows only about 13% of reflected light to pass, reducing glare and improving the visibility of the Moon's surface for comfortable observation. Use scenarios: - Observing the Moon to reveal finer surface details with less glare, especially during bright phases. - Viewing bright planets and other high-contrast targets to enhance detail without overexposure. - Use with compatible telescopes for beginner-level Moon and planetary observing, providing added comfort and versatility.