- Dual-sided fine polishing and polishing process ensures optimal performance for enhanced viewing experiences. - High-contrast filter (UHC filter) effectively blocks harmful light, significantly reducing light pollution. Ideal for urban and suburban observations, this filter allows for clearer and more vibrant celestial images. - Precision-engineered substrates guarantee accurate parallelism and surface quality, contributing to superior optical performance. - Diameter: 1.25 inches, compatible with standard eyepieces and designed for easy installation in secure housing. Applications: - Perfect for stargazers in city environments looking to improve their night sky observations by minimizing light interference. - Beneficial for astrophotography, helping to capture stunning images of celestial objects with enhanced clarity and detail. - Suitable for educational settings, providing students and enthusiasts with a reliable tool for exploring the night sky.