- 90-Degree Diagonal Mirror for Clear Views: Enjoy upright images while eliminating left-right confusion, ensuring a more accurate observation experience. - Comfortable Viewing Angle: The 90-degree design allows you to comfortably look down into your eyepiece. It is compatible with any 1.25-inch filters and standard 1.25-inch eyepieces for versatile use. - Ideal for Astronomy and Terrestrial Observation: Perfect for stargazing or observing land objects, the diagonal mirror enhances your viewing experience by providing a clearer perspective of celestial bodies and landscapes. - Easy Installation: Simply insert the diagonal prism into your 1.25-inch focuser, allowing for straightforward setup and immediate enjoyment of upright and correctly oriented images through your eyepieces. - Compatibility: Designed to work with standard 1.25-inch eyepieces and filters, making it a versatile addition to your telescope setup. Enhance your observational capabilities with this 90-degree diagonal mirror, whether you're exploring the night sky or observing nature. Its user-friendly design and compatibility with standard equipment make it a valuable tool for any astronomy enthusiast or nature observer.