From the renowned brand Tele Vue, the 10mm Delos Eyepiece is an innovative and high-quality tool for astronomical observation, offering a 20mm eye relief and a wide 72-degree apparent field of view. This eyepiece was meticulously designed as a more compact alternative to the Ethos range, without compromising on performance or image quality. The reduced field of view to 72 degrees provides the freedom to enhance eye-relief and effectively control pupil aberrations, all while maintaining a manageable size for the eyepiece. Drawing from the high standards set by the Ethos range, the Delos eyepiece delivers sharp, full-field clarity, virtually flawless theta distortion mapping, and color neutrality. The Delos eyepiece optimizes image fidelity by utilizing glass-matched multi-coatings and anti-reflection surfaces throughout the eyepiece. This, coupled with a new continuously adjustable height eyeguard system that can be locked in any position, significantly enhances contrast. The Delos eyepiece features a large 35mm eye-lens diameter, which effectively prevents stray light reflection off the first surface and blocks extraneous light from entering your eye. This results in a noticeable increase in perceived contrast, enhancing your viewing experience. The eyeguard's sliding action allows for the soft rubber eyeguard to be positioned at the ideal height to suit the observer's preference. Indicator marks on the eyepiece body serve as handy reference gu