Now Price: $42.94Manufacturer: ORIONFeatures: - This 17mm eyepiece is ideal for all types of telescopes: reflector, refractor, and catadioptric
- Offers a 50 degree apparent field of view for clear, sharp images of impressively high contrast
- Fully coated with magnesium fluoride on every air-to-glass surface
- Perfect for broad-field lunar observations, medium-sized star clusters, and a wide range of nebulas
- One-year limited warranty
With a wide 50-degree apparent field (43-degree for the 40mm), our Sirius Plossl line of eyepieces provide clear, sharp images of impressively high contrast. They're suitable all telescope types: reflector, refractor, and catadioptric. Each 4-element Sirius Plossl is fully coated with magnesium fluoride on every air-to-glass surface. Lens edges are blackened to reduce scattering of stray light and maximize contrast. Lenses are mounted in black anodized aluminum housings with 1.25" chrome-plated brass barrels. Each is fitted with rubber eyeguards and internally threaded to accept standard filters.
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