| Vixen Lanthanum (ED) Eyepieces |
| These Vixen eyepieces have four to eight lenses in proprietary designs. They use a lanthanum ED (Extra-low Dispersion rare earth glass) field lens to provide a uniformly very long 20mm eye relief for eyeglass use, even in the exceptionally short 2.5mm focal length model. The shorter focal lengths use a built-in Barlow lens to achieve high power without reducing the eye relief. Their optical performance approaches that of a Plössl at the center of the field (less so at the edges and with generally lower contrast because of the added lens elements in the shorter focal lengths), but with markedly longer eye relief. They are fully multicoated, with blackened lens edges for higher contrast. Each is threaded for standard color and nebula filters and comes with dust caps for both ends of the eyepiece. A safety groove cut into each chromed barrel catches your focuser’s thumbscrew to keep the eyepiece from falling out of your scope should the thumbscrew accidentally loosen while observing. Each has either a soft fold-down rubber eyecup or a twist-up rubber-rimmed eyecup to shield the eye from ambient light. They are a good choice for those who must wear glasses when observing, at more reasonable price points than some of the other long eye relief designs. |
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Vixen - 2.5mm Lanthanum Long Eye Relief
| Our Product #: V02 | | Vixen #: 3714 |
| In Stock: | Usually ships within one business day. |
| This is an exceptionally short focal length eyepiece with exceptionally long eye relief for eyeglass use. The 2.5mm Vixen uses a built-in Barlow to achieve high power without reducing the long 20mm eye relief . . .
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Vixen - 15mm Lanthanum Long Eye Relief with twist-up eyecup
| Our Product #: NLV15 | | Vixen #: 37109 |
| In Stock: | Usually ships within one business day. |
| This 15mm medium focal length Vixen Lanthanum (ED glass) eyepiece has exceptionally long 20mm eye relief for comfortable eyeglass use, typically two to three times longer than a similar focal length Plössl eyepiece of comparable optical quality. It is usable with any telescope type, under virtually any seeing conditions – from fair to superb . . .
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Vixen - 6mm Lanthanum Long Eye Relief with twist-up eyecup
| Our Product #: NLV06 | | Vixen #: 37104 |
| In Stock: | Usually ships within one business day. |
| This Vixen Lanthanum (ED glass) eyepiece provides high power capabilities with exceptionally long eye relief for eyeglass use. It is designed for unvignetted medium to medium high magnification viewing with short focal length refractors and fast focal ratio/short focal length reflectors . . .
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Vixen - 20mm Lanthanum Long Eye Relief with twist-up eyecup
| Our Product #: NLV20 | | Vixen #: 37112 |
| In Stock: | Usually ships within one business day. |
| This 20mm medium long focal length Vixen Lanthanum (ED glass) eyepiece has exceptionally long 20mm eye relief for use with eyeglasses, an eye relief nearly twice as long as similar focal length eyepieces of comparable optical quality. It is usable with any telescope type, under virtually any seeing conditions – from so-so to superb . . .
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Vixen - 30mm 2" Lanthanum Long Eye Relief
| Our Product #: V230 | | Vixen #: 3759 |
| In Stock: | Usually ships within one business day. |
| This economical medium long focal length 2" eyepiece has long eye relief for eyeglass use and is excellent for wide field scanning of the star clouds of Sagittarius and taking in the more compact open clusters and nebulas . . .
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