3.2 cm (1.25 in) UHC filter - Purpose: Designed to enhance the image contrast of the observed scene by filtering specific wavelengths. - Substrate: Precision-polished substrate with high parallelism and accurately finished surfaces. - Filter type and benefit: High-contrast UHC light filter that significantly reduces light pollution, making it suitable for city and suburban night-sky observation. - Construction quality: Double-sided fine polishing process ensures high parallelism. Coating: double-sided multilayer coating; the backside increases transmission and reduces reflected light. - Specifications: Diameter 3.2 cm (1.25 in). Substrate designed for precise optical performance and durable use. - Applications and use scenarios: - Urban night-sky viewing to reveal emission nebulae and faint details by mitigating light pollution. - Suburban astrophotography to improve contrast and capture faint nebular objects with reduced ambient light. - General telescope viewing in light-polluted environments, enhancing object visibility and scene clarity. - Performance notes: The double-sided multilayer coating improves transmission while minimizing glare and reflection, contributing to clearer, higher-contrast images.