{"product_id":"svbony-sv172-dew-heater-strip-240mm","title":"SVBONY SV172 Dew Heater Strip 240mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e240mm Length for Telescopes, Finders \u0026amp; Cameras\u003c\/li\u003e\n\u003cli\u003eFlexible Wrap-Around Design\u003c\/li\u003e\n\u003cli\u003eWaterproof and Durable Construction\u003c\/li\u003e\n\u003cli\u003eLow-Power, Continuous Heating\u003c\/li\u003e\n\u003cli\u003eSimple Installation for Field Use\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\u003eSVBONY SV172 Dew Heater Strip 240mm\u003c\/h2\u003e\n\u003cp\u003eThe SVBONY SV172 Dew Heater Strip delivers 240mm of active, low-power heating to keep telescope objectives, finder scopes, and camera lenses clear of session-ending dew, ensuring sharp views all night long.\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\u003eThe 240mm Solution for Dew-Free Optics\u003c\/h3\u003e\n\u003cp\u003eA 240mm length is ideal for protecting the optics on most finder scopes, guide scopes, and larger camera lenses up to about 76mm in diameter. The SVBONY SV172 applies gentle, continuous heat directly to the lens cell or tube, raising the surface temperature just enough to prevent moisture from condensing. This active prevention is the only reliable way to combat dew, especially during long imaging sessions on humid nights.\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\u003eAll-Weather, Flexible Installation\u003c\/h3\u003e\n\u003cp\u003eBuilt to withstand damp observing conditions, the SV172 heater strip is made from durable, waterproof materials for reliable use night after night. Its flexible construction allows it to conform tightly to the curve of your optical tube or lens barrel for efficient heat transfer. Installation is straightforward, allowing you to quickly secure it and connect to a power source, minimizing setup time.\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\"\u003eHow well will the SVBONY SV172 240mm Dew Heater fit on a 50mm guide scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003ePerfectly. The 240mm length is more than enough to wrap around a standard 50mm guide scope or finder scope, providing complete coverage to prevent dew formation on the objective lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI use a DSLR with a 70-200mm f\/2.8 lens for astrophotography. Is the SVBONY SV172 strip the right size?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the 240mm length is an excellent fit for most 70-200mm or similar telephoto lenses. It wraps around the lens barrel just behind the front element, gently warming it to keep dew from forming and ruining your exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of power source does the SVBONY SV172 Dew Heater require?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SVBONY SV172 strip is designed for low-power operation and requires a dew controller or a compatible 12V power source with a variable output to regulate the heat. The heater itself does not have a built-in controller.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the SVBONY SV172 heater strip waterproof?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the SVBONY SV172 is constructed from waterproof materials, making it safe and reliable for use in damp, high-humidity environments where dew is most common.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I leave the SVBONY SV172 on all night?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. It is designed for continuous, low-power operation throughout a long observing or imaging session. The gentle heating is meant to run for hours to consistently keep your optics clear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the flexible design of the SVBONY SV172 help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe flexible design ensures the strip makes close contact with your equipment, whether it's a small eyepiece or a curved telescope tube. This snug fit maximizes heat transfer efficiency, so more of the warmth goes into your optics and less is wasted.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/svbony-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSVBONY 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"Default Title","offer_id":52861264003357,"sku":"SV-W9132A","price":23.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY-SV172-Dew-Heater-Strip-240mm-for-Astronomy-Telescopes-Cameras-1_122cddeb-0db6-4279-aaf1-fe8a73645087.jpg?v=1788660731","url":"https:\/\/davidastro.com\/fr\/products\/svbony-sv172-dew-heater-strip-240mm","provider":"David Astro","version":"1.0","type":"link"}