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The Levenhuk Ra ER20 WA 9 mm is a superb accessory for any telescope. Its wide-field optics deliver bright images of deep-sky objects. This eyepiece is indispensable for telescopes with medium apertures when studying stars and globular clusters. For other types of telescopes, it will enhance image quality when observing binary stars and the planets of the Solar System.
The Levenhuk Ra ER20 WA 9 mm, 1.25” eyepiece has an apparent field of view of 68° and a long eye relief, allowing the entire field to be observed. All optical elements are made of glass with a fully multi-coated finish. Image quality is good; it allows for detailed observation of individual astronomical objects. There is no distortion at the centre of the field of view. This eyepiece can be used in conjunction with a 2x Barlow lens.
This accessory is fitted with a fold-down rubber eyecup, which ensures a good level of comfort during prolonged observations, even for spectacle wearers. With its 1.25” diameter barrel, this eyepiece can be used with telescopes of any make.
Features:
- Fully multi-coated multi-element glass optics
- Wide field of view with high degree of flatness and minimal optical distortion at the centre
- High-quality images on wide-aperture optical systems
- Suitable for observing nebulae, star clusters and galaxies
- The long eye relief allows the entire field of view to be observed
The kit includes:
- Eyepiece
- Protective caps – 2 pcs
- Cleaning cloth
| Specifications | |
|---|---|
| Optical design | wide-field (68°), 8 elements in 6 groups |
| Lens material | optical glass |
| Lens coating | fully multi-coated |
| Focal length, mm | 9 |
| Eyepiece diameter, mm | 29.2 |
| Eye relief, mm | 20 |
| Barrel diameter, “ | 1.25 |
| Apparent field of view, ° | 68 |
| Body | aluminium |
| Eyecup | foldable, rubber |
| Brand | Levenhuk Inc., USA |
| Warranty, years | 2 |
| EAN | 0785104921641 |
| Package dimensions (WxDxH), cm | 17 x 6.5 x 6.5 |
| Shipping weight, kg | 0.38 |
