{"product_id":"william-optics-2-x-42mm-cat-eyes-binoculars","title":"William Optics 2 x 42mm Cat Eyes Binoculars","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2x Magnification\u003c\/li\u003e\n\u003cli\u003e42mm Objective Lenses\u003c\/li\u003e\n\u003cli\u003eUltra-Wide 30° Field of View\u003c\/li\u003e\n\u003cli\u003eIndividual Eye Focus System\u003c\/li\u003e\n\u003cli\u003e-700° to +300° Diopter Adjustment\u003c\/li\u003e\n\u003cli\u003eM44.5 x 0.75 Filter Threads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eWilliam Optics 2 x 42mm Cat Eyes Binoculars\u003c\/h2\u003e\n\u003cp\u003eThe William Optics 2 x 42mm Cat Eyes Binoculars deliver an immense 30° field of view using just 2× magnification through large 42mm objective lenses. An individual focus system and a massive -700° to +300° diopter adjustment range allow for precise, personalized focus, while the interpupillary distance adjusts from 50mm to 74mm to fit a wide range of observers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 30° Field of View for a Spacewalk Perspective\u003c\/h3\u003e\n\u003cp\u003eStandard astronomical binoculars offer a field of view around 7°; the Cat Eyes provide a staggering 30°. This isn't an incremental increase—it's a fundamentally different way of seeing the sky. At just 2x magnification, you can frame entire constellations like Orion or Cygnus in a single, sharp view, providing a \"spacewalk\" feeling of immersion that high-power instruments cannot replicate. This expansive view also makes them ideal for concerts, sporting events, or theater, where you want to see the entire stage or field at once.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIndividual Focus and a -700° to +300° Diopter Range\u003c\/h3\u003e\n\u003cp\u003eInstead of a central focus wheel, the Cat Eyes binoculars feature an individual focus system for each eye. This allows for more precise and durable focus settings that won't shift during use. The key benefit is the enormous -700° to +300° diopter adjustment range, which allows many observers with prescriptions for nearsightedness or farsightedness to achieve a perfectly sharp image without wearing their glasses. Combined with an interpupillary distance range of 50mm to 74mm, these binoculars provide a comfortable, customized fit for almost any user.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFully Multi-Coated Optics with M44.5 Filter Threads\u003c\/h3\u003e\n\u003cp\u003eThe 42mm objective lenses feature full multi-coatings to maximize light transmission and contrast, delivering bright images even in low-light conditions. A critical feature for astronomers is the inclusion of M44.5 x 0.75 filter threads on the front of each objective. This allows you to thread in a pair of nebula filters, such as UHC or OIII filters, to dramatically increase the contrast of emission nebulae against a dark sky background. For added flexibility, optional adapters can convert these threads to the more common M48 standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy would I choose the Cat Eyes Binoculars' 2x magnification over a standard 7x or 10x pair?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 2x magnification is a deliberate design choice to achieve the ultra-wide 30° field of view. These binoculars are not for resolving planetary detail but for providing an immersive, wide-field experience. The low power also makes the view incredibly stable and easy to hand-hold, creating a relaxing \"spacewalk\" sensation as you scan the sky.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the William Optics Cat Eyes perform on the Milky Way from a dark sky site?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThey are exceptional for this purpose. The large 42mm objective lenses gather significant light, while the 30° field allows you to sweep through vast sections of the galactic plane, from the Cygnus Rift to the dense star clouds in Sagittarius. You can trace the dark lanes and bright star fields in a way that feels like you're looking through a spaceship window.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre the Cat Eyes Binoculars good for tracking meteors during a shower like the Perseids?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThey are perfectly suited for meteor showers. The vast 30° field of view means you are monitoring a huge patch of sky simultaneously, dramatically increasing your chances of seeing a meteor's full trail without needing to move the binoculars. The bright, high-contrast optics will make even faint meteors pop against the background.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use filters with the William Optics 2x42 Cat Eyes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Each of the 42mm objectives has M44.5 x 0.75 threads, allowing you to attach filters directly. This is a significant advantage for viewing emission nebulae like the North American Nebula (NGC 7000). Using a pair of narrowband or UHC filters will dramatically enhance contrast. Optional adapters are also available to step up to the M48 filter standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a strong prescription. Can I use these Cat Eyes binoculars without my glasses?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a diopter adjustment range of -700° to +300°, many users can achieve sharp focus without their glasses. The individual focus mechanism for each eyepiece allows you to precisely correct for differences between your eyes, providing a comfortable and immersive viewing session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of an individual focus system on the Cat Eyes Binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn individual focus system, where you focus each eyepiece separately, is generally more robust and precise than a central focus knob. Once set for your eyes, the focus is less likely to be accidentally shifted. This system is also essential for accommodating the wide diopter range these binoculars offer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification\u003c\/td\u003e\n\u003ctd\u003e2×\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens Diameter\u003c\/td\u003e\n\u003ctd\u003e42mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField of View\u003c\/td\u003e\n\u003ctd\u003e30°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocus System\u003c\/td\u003e\n\u003ctd\u003eIndividual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eFully Multi-Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterpupillary Distance\u003c\/td\u003e\n\u003ctd\u003e50mm – 74mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiopter Adjustment\u003c\/td\u003e\n\u003ctd\u003e-700° ~ +300°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thread\u003c\/td\u003e\n\u003ctd\u003eM44.5 x 0.75 (both objectives)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Adapter\u003c\/td\u003e\n\u003ctd\u003eM44.5 to M48 Filter Adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCat Eyes 2x42 Binoculars\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eObjective Lens Caps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eEyepiece Caps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eNeck Strap\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCarrying Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/William_Optics_Cat_Eyes_2x42_Binoculars_Manual.pdf?v=1788225199\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/william-optics-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eWilliam Optics 2-Year Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":50347977343261,"sku":"WO-B-2X42-RD","price":198.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/William-Optics-8-x42-Cat-Eyes-Binoculars-1.jpg?v=1757720622","url":"https:\/\/davidastro.com\/fr-us\/products\/william-optics-2-x-42mm-cat-eyes-binoculars","provider":"David Astro","version":"1.0","type":"link"}