{"product_id":"william-optics-swan-25mm-eyepiece-2-pre-owned","title":"William Optics SWAN 25mm Eyepiece 2\" (Pre-owned)","description":"\u003cp\u003eThe Swan eyepieces are super wide angle designs with a 72° apparent field of view. They use simple but sophisticated five-lens optical systems for generally higher contrast than the more complicated optical designs used in some other super wide angle eyepieces that use up to eight lenses. All lenses are fully multicoated for high light transmission. Lens edges and internal field stops are blackened to reduce internal reflections and improve contrast. The eyepiece rubber grip ring is useful for safer handling of the heavier 2\" eyepieces in cold weather when wearing gloves. The eyepieces have soft roll down rubber eyecups for eyeglass use. They can be used for all types of observing, with all telescope types, but they are recommended for use with focal ratios up to f\/6 and above. Dust caps are provided for both ends of each eyepiece. A soft protective drawstring-equipped velvet storage bag is standard equipment with each.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis 5-element super-wide angle 25mm SWAN EP's panoramic views at 72 deg. FOV will leave you speechless!  A premium eyepiece at a fraction of the cost its worth!\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSuper Wide FOV\u003c\/span\u003e\u003cbr\u003eOutstanding super-wide field of view: 72 deg. FOV\u003cbr\u003eFully Multicoated lenses for excellent transmittance.\u003cbr\u003eReduced chromatic aberration.\u003cbr\u003eImproved contrast compared to similar EPs.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eGreat Contrast\u003c\/span\u003e\u003cbr\u003eInternally fully blackened (lens edges and internal spacers).\u003cbr\u003eNo flaring or ghosting on high-contrast objects.\u003cbr\u003eParfocal.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLight and Easy\u003c\/span\u003e\u003cbr\u003eSoft rubber eyecup.\u003cbr\u003eVery Long eye-relief: 21mm.\u003cbr\u003eNo internal reflections, kidney beaning or other distracting distortions.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTerrific Fit and Finish\u003c\/span\u003e\u003cbr\u003eHigh-resistance anodized black barrel.\u003cbr\u003eSmooth design for no hook up in your focuser.\u003cbr\u003eThreaded for use with 2\" filters.\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":43115289116785,"sku":"USED040213","price":125.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/William-Optics-25mm-SWAN-eyepiece-2.jpg?v=1775146803","url":"https:\/\/khanscope.com\/fr\/products\/william-optics-swan-25mm-eyepiece-2-pre-owned","provider":"Khan Scope Centre","version":"1.0","type":"link"}