Bring the cosmos closer with the Tele Vue 17.3mm Delos Eyepiece, expertly engineered for high-contrast solar system and deep space observation. This versatile eyepiece is compatible with all telescope types and sizes, making it an essential tool for both amateur stargazers and seasoned astronomers.Designed with a generous 20mm eye relief, this eyepiece is perfect for eyeglass wearers, ensuring comfortable viewing sessions without compromising on image quality. The Tele Vue 17.3mm Delos Eyepiece is also compatible with Tele Vue Dioptrx astigmatism-correcting lenses, offering the option to observe the night sky without the need for glasses.The adjustable height eyeguard, complete with a soft rolldown eyecup, shields the eye from ambient light, enhancing image contrast for a more immersive viewing experience. The eyeguard height can be securely locked at any desired point, providing a customized fit for every user.Experience the high contrast, neutral color balance, and full field sharpness that the 17.3mm Delos Eyepiece offers. It effectively controls astigmatism, field curvature, lateral color, and angular magnification distortion, delivering clear and sharp images of celestial bodies.The Delos Eyepiece also boasts low pupil sensitivity, minimizing the 'kidney bean effect' often experienced during daytime use. The 1.25" barrel, threaded for standard 1.25" eyepiece filters, features a safety groove machined into the chrome barrel to engage your f