{"product_id":"svbony-sv132-2-h-beta-25nm-visual-filter-w9102b","title":"SVBONY SV132 2'' H-Beta 25nm Visual Filter (W9102B)","description":"\u003ch1\u003eSVBONY SV132 2'' H-Beta 25nm Visual Filter\u003c\/h1\u003e\n\u003cp\u003eThe H-Beta filter is a narrowband filter specially designed for visual observation. It is mainly aimed at the 486nm (blue) line spectrum nebula, removes the interference of other light, and improves the contrast.\u003c\/p\u003e\n\u003cp\u003eDuring observation, in order to see sufficient dark nebula, it is necessary to ensure a large enough luminous flux with a large-aperture telescope. Small-aperture telescopes are not recommended.\u003c\/p\u003e\n\u003cp\u003eIt is suitable for observing the Horsehead Nebula in Orion and the California Nebula. Filter with metal 2\" threads fits 2\" eyepieces and diagonal barrels.\u003c\/p\u003e\n\u003ch4\u003eElusive Dark Nebula Visualization\u003c\/h4\u003e\n\u003cp\u003eUnlocks clear views of Horsehead, California and Cocoon Nebulae in dark skies, solving the problem of faint nebula invisibility.\u003c\/p\u003e\n\u003ch4\u003e486nm Blue Line Spectrum Targeting\u003c\/h4\u003e\n\u003cp\u003eFocuses on 486nm blue line spectrum nebulae, filters out interfering light to significantly improve nebula contrast.\u003c\/p\u003e\n\u003ch4\u003eLarge-Aperture Telescope Compatibility\u003c\/h4\u003e\n\u003cp\u003eRequires large-aperture telescopes to ensure sufficient luminous flux, ideal for deep-sky nebula observation in dark environments.\u003c\/p\u003e\n\u003ch4\u003eDurable Metal Mount Design\u003c\/h4\u003e\n\u003cp\u003eSturdy metal frame with precise threading, ensuring stable installation without light leakage during observation.\u003c\/p\u003e\n\u003ch4\u003e2\" Universal Fit\u003c\/h4\u003e\n\u003cp\u003eStandard 2\" filter threads, perfectly compatible with 2\" eyepieces and threaded diagonal barrels for seamless integration.\u003c\/p\u003e\n\u003ch2\u003eFeatures \u003c\/h2\u003e\n\u003cul class=\"a-unordered-list a-vertical a-spacing-mini\"\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e2\" Eyepiece Filter; with metal mount 2\" filter threads\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eFor Horsehead Nebula California; and Cocoon Nebulae in Dark Skies\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eMainly aimed at the 486nm (blue) line spectrum nebula; filters out the interference of other light; can improve the contrast of the nebula\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eThrough the use of filters; the Horsehead Nebula can be clearly seen; filter with metal mount 2\" filter threads; threaded to fit 2\" eyepieces and threaded diagonal barrels\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eTo see a sufficiently dark nebula; ensure a large enough luminous flux; needs to be observed with a large-aperture telescope\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6387029296852401851663295_1024x1024.jpg?v=1789748099\" alt=\"\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6387029138875923094057798_1024x1024.jpg?v=1789748125\" alt=\"\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6387029297672830308590636_1024x1024.jpg?v=1789748148\" alt=\"\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6387029298407016527982995_1024x1024.jpg?v=1789748170\" alt=\"\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6387029299118711613838191_1024x1024.jpg?v=1789748199\" alt=\"\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"x1vathgz x1gukg7c x11r6d5e xkpwil5 xezivpi x17mssa0 x1ghz6dp x1x1rfll xgqtt45 x1rea2x4\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"xmw5fkk x1q0q8m5 xso031l x8dqpqg x1s688f xl2ypbo x18g2hj5 xcxz95d xvxn4a6 x1c1uobl x1yc453h\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"xmw5fkk x1q0q8m5 xso031l x8dqpqg 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x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e\u003cstrong class=\"x1s688f\"\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003eH-Beta\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e\u003cstrong class=\"x1s688f\"\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e2-Inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e\u003cstrong class=\"x1s688f\"\u003eSubstrate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003eB270\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e\u003cstrong class=\"x1s688f\"\u003eSubstrate Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e1.85mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e\u003cstrong class=\"x1s688f\"\u003eWavelength Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e400-700nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e\u003cstrong class=\"x1s688f\"\u003eCWL\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e486nm±2nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e\u003cstrong class=\"x1s688f\"\u003eFWHM\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e25nm±2nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e\u003cstrong class=\"x1s688f\"\u003eT peak\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e\u003cstrong class=\"x1s688f\"\u003eBlocking\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003eOD3 @300-1100nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e\u003cstrong class=\"x1s688f\"\u003eClear Aperture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e\u003cstrong class=\"x1s688f\"\u003eSurface Quality\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e60\/40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e\u003cstrong class=\"x1s688f\"\u003eSurface parallelism\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e1\/4λ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e\u003cstrong class=\"x1s688f\"\u003eParallelism\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e30″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e\u003cstrong class=\"x1s688f\"\u003eNet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"x1q5g3hx x1q0q8m5 xso031l x1rgnqjh x8dqpqg x1v0wz0i x1cedrb9 x1pe9zv5 xcxz95d x5xtxb0 x1c1uobl x1yc453h\"\u003e13.2g \/ 0.47oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSVBONY H-beta 25nm Filter\u003c\/li\u003e\n\u003cli\u003eSturdy Plastic Cases\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/astronomyplus.com\/pages\/svbony-warranty\" target=\"_blank\"\u003eSvbony 1-Year Warranty \u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":52901200003301,"sku":"SVB-W9102B","price":108.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Capture_80bb2f89-cc54-45ca-a94b-10c353d174b7.jpg?v=1789748528","url":"https:\/\/astronomyplus.com\/products\/svbony-sv132-2-h-beta-25nm-visual-filter-w9102b","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}