Block Light Pollution & Boost Contrast – Specially designed to block sodium/mercury streetlight glare while enhancing emission nebulae (e.g., Orion, Lagoon) and lunar crater details. Ideal for urban stargazing and astrophotography. Dual M28.5x0.6 Threads for Stacking – Compatible with 1.25" telescopes and astrophotography cameras. Seamlessly connect multiple filters (e.g., polarizing, moon filters) for customized observation. Premium Optical Performance – Multi-coated optical glass maximizes light transmission (＞90%) and reduces reflections, paired with a lightweight aluminum frame for durability. Astronomy Essentials for All Levels – Perfect for beginners and experts. Use for planetary observation, deep-sky imaging, or terrestrial photography with enhanced clarity. Compact & Portable Design – Includes a protective storage case. A thoughtful gift for amateur astronomers and astrophotographers. Choose wisely, and the universe will be your endless canvas. Unlock Crisper Celestial Views This 1.25-inch UHC filter is engineered for astronomers battling light-polluted skies. Its narrowband design isolates key wavelengths (H-beta and O-III emissions) to suppress artificial light while boosting contrast for nebulae, galaxies, and lunar surfaces. Key Features: Material: Aircraft-grade aluminum frame + multi-coated optical glass (anti-scratch, waterproof). Compatibility: Fits all 1.25" eyepieces and cameras with M28.5x0.6 threads. Use Cases: Urban stargazing, astrophotography (DSLR/CCD), and terrestrial observation. Why Choose Us? Compared to generic filters, our UHC filter offers higher light transmission and precise wavelength blocking for vivid celestial details. Backed by a 1-year warranty and eco-friendly packaging.