Enhance your astronomical observations with this 1.25 Inch 15mm 66 Degree Ultra Wide Angle Eyepiece, designed for standard 1.25 inch (31.7mm) telescopes. Crafted from high-quality aluminum alloy and premium optical glass, this eyepiece combines durability with exceptional optical performance to deliver bright, clear, and immersive views of celestial objects. Key Features: · Optimal Focal Length and Compatibility: Featuring a 15mm focal length and a 1.25 inch (31.7mm) connector diameter, this eyepiece is compatible with most 1.25 inch astronomical telescopes, making it a versatile addition to your telescope setup. · Fully Coated FMC Green Film Lens: Utilizes multi-layer HD broadband green film coatings that significantly enhance light transmission and contrast while minimizing chromatic aberration, resulting in sharp and vivid images with high brightness. · Ultra Wide 66 Degree Field of View: Offers an expansive 66-degree viewing angle, allowing you to observe a broad swath of the night sky with remarkable clarity and detail, ideal for viewing planets, nebulae, star clusters, and other celestial phenomena. · Superior Optical Design: Composed of 4 high-quality lens elements grouped in 3 assemblies, this eyepiece delivers crisp image quality without distortion or blurring across the field of view. · Ergonomic and Durable Construction: Built with a robust aluminum alloy body and featuring an anti-slip design for comfortable handling and secure attachment to your telescope. · Versatile Usage Scenarios: Perfect for amateur astronomers and hobbyists who enjoy stargazing, nature observation, or astrophotography. Also makes a thoughtful gift choice for astronomy enthusiasts on special occasions. Specifications: · Item Type: Ultra Wide Angle Telescope Eyepiece · Focal Length: Approx. 15mm (0.6 inches) · Connector Size: 1.25 Inches (31.7mm) · Field of View: 66 Degrees · Lens Coating: Fully Multi-Coated (FMC) Green Film · Number of Lenses: 4 Elements in 3 Groups · Material: Aluminum Alloy, Optical Glass · Weight: Approx. 125g (4.4oz) · Thread Specification: M28.6x0.6mm · Anti-Slip Design: Yes Package Includes: · 1 x 1.25 Inch 15mm 66 Degree Ultra Wide Angle Eyepiece This ultra wide angle eyepiece is engineered to deliver an immersive and comfortable viewing experience with exceptional optical clarity and brightness. Its durable and lightweight build ensures long-lasting use, making it an essential accessory for enriching your astronomical observations.