The area viewed through the eyepiece is called apparent field of view. The apparent field of view of most eyepieces is between 45° and 50°. Generally, wide eyepieces feature a FOV between 60° and 70°. The Vixen SSW Eyepieces deliver an 83° super-wide apparent field of view for the best observing experience.
Sharp images throughout the entire field of view
Previous wide eyepieces tended to create image deterioration around the edge of the field of view. The 4-group 7-element design of the Vixen SSW Eyepieces employs lens made of quality lanthanum glass that features extra-low dispersion glass in order to achieve sharp images at the edge of the field of view. All the SSW Eyepieces are designed for telescopes with a focal ratio as short at f/4.
No loss of light across the viewing field
The placement of the lenses, the position of the field stop ring, and the size of the body are designed optimally to ensure 100% brightness in the field of view without vignetting. There is no loss of light at the edge of field.
Bright and clear images
The advanced multi-coatings on each surface of the lenses offer high light transmission, over 99.5%, throughout the visible rays of light (430 nm - 690 nm) and produce extremely bright and clear images. The structure of the inside of the eyepiece body is designed for the optimal light path.
User-friendly external design
The durable eyepiece body is anodized aluminum and its different colors indicate difference of focal lengths. The rubber covering eliminates rolling and provides protection of the eyepiece body from scratching. The twist-up rubber eyecup allows you to comfortably adjust your viewing eye-point. The groove of the eyepiece barrel secures the eyepiece in your telescope and is usable with compression ring eyepiece adapters. The SSW eyepieces are not only easy to use but are designed with the observer in mind.
Vixen SSW eyepiece
Vixen SSW3.5mm Eypiece
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