The 14mm TeleVue Delos puts the optical virtues of a TeleVue Ethos eyepiece – high contrast, a neutral color balance, and full field sharpness – into a 72° field eyepiece with a long 20mm eye relief that makes it ideal for eyeglass wearers. The majority of eyepieces in this focal length range have much shorter eye relief that makes them problematical for eyeglass use, but that is not an issue with the Delos. With 20mm of eye relief, its full 72° apparent field is easily usable for those who wear glasses to control their astigmatism.
You can see how wide your actual field of view will be when you use this Delos with your telescope by using the eyepiece field calculator under the "formula" tab above.
There is an adjustable height eyeguard with a soft rolldown eyecup to shield the eye from ambient light (from a neighbor’s security light, for example) and improve the image contrast. The eyeguard height can be locked in place at any point desired. The Delos can be used with TeleVue Dioptrx astigmatism correcting lenses, should you choose to observe sans eyeglasses.
As a longer eye relief/modestly lower power 72° field version of the acclaimed 100° field 13mm TeleVue Ethos, the 14mm Delos has the performance virtues that astronomers have come to expect from an Ethos – well-controlled astigmatism, field curvature, lateral color, angular magnification distortion correction, and low pupil sensitivity (kidney bean effect) for daytime use.
The 14mm Delos has a 1.25” barrel that is threaded for standard 1.25” eyepiece filters. A safety groove is machined into the chrome barrel to engage your focuser thumbscrew. This will help prevent the eyepiece from falling should the thumbscrew accidentally loosen while observing. The main eyepiece barrel is narrow enough to allow most observers to use a pair of 14mm Delos in a binoviewer. Rubber grip rings provide a sure grip in cold weather when wearing gloves or mittens. Dust covers are provided for both ends of the eyepiece.
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