Product Description: 1.25 Inch Calibration Eyepiece for Reflector Telescopes Features: - Precision Engineering: This 1.25 inch calibration eyepiece is crafted from high-quality aluminum alloy and finished using advanced CNC manufacturing techniques, ensuring durability and accuracy. - Easy Calibration: Designed specifically for reflector telescopes, simply insert the collimation eyepiece into the telescope tube. Align the black spot in the center of the two lines on the eyepiece for optimal performance. - User-Friendly Adjustment: If the black spot is not centered, easily adjust the screws to achieve perfect collimation, ensuring clear and precise viewing. - Ideal for Astronomy and Photography: This calibration eyepiece is a must-have accessory for both astronomy enthusiasts and photography lovers, enhancing your stargazing and imaging experience. Specifications: - Condition: Brand New - Material: Aluminum Alloy - Color: Black - Caliber Diameter: 1.25 inches - Length: Approx. 64 mm (2.52 inches) - Diameter: Approx. 35 mm (1.38 inches) - Weight: Approx. 92 g Package Includes: - 1 x 1.25 Inch Calibration Eyepiece Enhance your telescope's performance with our reliable and easy-to-use calibration eyepiece, perfect for achieving the best optical alignment for your astronomical observations.