Blocks annoying ambient light and helps you position your eye at the
desirable distance from the eyepiece. Especially important for wide-field
eyepieces. Stretches to fit most 1.25" eyepieces. This eye cup is great to use
with eyeglasses and is very easy to install. Just pop it over the viewing lens
and say goodbye to external light clouding your view.
- Soft rubber "accordion-style" eyeguard
- Fits most 1.25" eyepieces
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