Tele Vue Delos Eyepieces
"It was natural to take lessons learned from the tremendously successful Ethos project and apply it going forward. In the fall of 2008, Paul Dellechiaie was tasked to investigate a long eye-relief eyepiece design in the 70º AFOV range, retaining the key performance goals met with Ethos. My father named Paul's design, "Delos." Delos is a beautiful Greek island which happens to be the mythical birthplace of Apollo, god of light. More importantly the name was chosen to give recognition to Paul, principal designer of both Delos and Ethos." David Nagler
Tele Vue is pleased to introduce the Delos, mid-to-short focal length line of 20mm eye-relief, 72º apparent field of view eyepieces. Every optical, mechanical, and ergonomic aspect was rethought to achieve reference-standard performance for any visual application.
The Delos was conceived as a narrower field Ethos. Reducing the field to 72º allowed freedom to increase eye-relief, while controlling pupil aberrations, all without making the eyepiece too large. With Ethos performance standards as benchmarks, the Delos design achieves full field sharpness, virtually perfect f θ (theta) distortion mapping, and color neutrality. Image fidelity is maximized utilizing glass matched multicoatings and anti-reflection surfaces throughout the eyepiece.
Contrast is further enhanced with a new, continuously adjustable height eyeguard system that can be locked in any position. Since the Delos eye-lens measures a quite large 35mm in diameter, preventing stray light from reflecting off the first surface and extraneous light from entering your eye pays off in a nice increase in perceived contrast. The eyeguard's sliding action allows for positioning 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. The eye-guard can also rotate for Dioptrx users.
TeleVue Delos Eyepiece Specifications
- Focal Length: 3.5mm
- Apparent Field Of View: 72º
- Eye Relief: 20mm
- Effective Field Stop: 4.4mm
- Weight: 1.1 lbs.
Tele Vue Product Number: EDL-03.5
- Additional Information
SKU TE-EDL-03.5 Manufacturer Tele Vue Optical Design Delos Barrel Size 1.25" Warranty Lifetime Warranty Eyepiece Field of View - Apparent 72º Eyepiece Focal Length 3.5mm Eyepiece Eye Relief 20mm Eyepiece Manufacturer Series Televue Delos Eyepiece Weight 1 lb. 1.6 oz. Field Stop 4.4mm Number of Lens Elements & Groups Info Not Provided By Manufacturer Comes with Dust Caps? Yes Comes with Eye Guard? Yes
- Included Items
- Televue Delos 3.5mm Eyepiece - 1.25"
- Dust Caps
- Eye Guard
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