Tele Vue Delos 3.5mm Planetary Telescope Eyepiece EDL-03-5 is a high performance eyepiece built to give you the optical quality of the Ethos with a much more narrow, precise focal length. TeleVue has redesigned every optical, mechanical, and ergonomic aspect of the original Ethos to achieve reference-standard performance for any visual application. Tele Vue Optics has reduced the field of view to 72° and increased the eye relief of the eyepiece while controlling pupil aberrations, all without making the Tele-Vue telescope accessory too large. The powerful design of the TeleVue Optics Delos 3.5mm Telescope Eye Piece achieves full field sharpness, virtually perfect fθ distortion mapping, and color neutrality. Image fidelity is maximized utilizing glass-matched multi-coated lenses and anti-reflective surfaces throughout the Tele Vue Optics Delos 3.5mm Focal Telescope Eye Piece for Planets.
Contrast is further enhanced on the Tele Vue Optics Delos 3.5mm 72° Apparent Field Telescope Eye-Piece with a new, continuously adjustable height eyeguard system that can be locked in any position. Since the eye lens of the telescope accessory is a large 35mm in diameter, preventing stray light from reflecting off the first surface and extraneous light from entering your eye gives you a great increase in perceived contrast. The Televue Delos 20mm Eye Relief 3.5mm Focal Length Telescope Eyepiece features a sliding action eye guard that allows you to position the soft rubber eyeguard at the ideal height to suit the observer's preference. Indicator marks on the eyepiece body are handy reference guides for setting your perfect position. Unlock the possibilities of the universe with the Tele-Vue Optics Delos Full Field 3.5mm Tele-Scope Eyepiece.