{"product_id":"touptek-h-alpha-2-inch-6-5nm-fwhm-narrowband-filter-astronomical-filter-for-deepsky-photography","title":"ToupTek H-alpha 2-inch 6.5NM FWHM Narrowband Filter Astronomical Filter for Deepsky Photography","description":"\u003cp\u003e\u003cb\u003eToupTek H-alpha 2-inch 6.5NM FWHM Narrowband Filter Astronomical Filter for Deepsky Photography\u003cbr\u003e\u003cbr\u003eDescription:\u003c\/b\u003e\u003cbr\u003e- Narrowband filters are essential accessories in astrophotography, used to isolate specific wavelength emission lines and enhance target signal-to-noise ratio - particularly suitable for capturing spectacular emission nebulae.\u003cbr\u003e- SHO narrowband filters are precisely tuned to the three primary ionized emission lines of star-forming regions: Hα (656.3nm); SII (671.6nm); OIII (500.7nm)\u003cbr\u003e- By using these filters, you can effectively block urban light pollution and background stray light, significantly enhancing signal contrast and revealing incredible detail - enabling you to achieve Hubble-like palettes (SHO composites) in your astrophotography. \u003cbr\u003e\u003cbr\u003e\u003cb\u003eTechnical Parameters:\u003c\/b\u003e\u003cbr\u003e- Size: 2-inch\u003cbr\u003e- Glass thickness: 2mm\u003cbr\u003e- Transmittance: \u0026gt;90%\u003cbr\u003e- Glass material: Quartz Glass\u003cbr\u003e- Frame material: aluminum alloy\u003cbr\u003e- OD value: ≥5.0\u003cbr\u003e\u003cbr\u003e\u003cb\u003ePackage Included:\u003c\/b\u003e\u003cbr\u003e- 1 x H-alpha Filter\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 960px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/101428\/101428-01.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 960px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/101428\/101428-02.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 960px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/101428\/101428-03.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 960px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/101428\/101428-04.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 960px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/101428\/101428-05.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 960px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/101428\/101428-06.jpg\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"TeSeek Official","offers":[{"title":"Default Title","offer_id":47522380644588,"sku":"101430","price":113.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/9669\/3740\/files\/1775610899-1.jpg?v=1776059619","url":"https:\/\/teseek.com\/fr\/products\/touptek-h-alpha-2-inch-6-5nm-fwhm-narrowband-filter-astronomical-filter-for-deepsky-photography","provider":"TeSeek Official","version":"1.0","type":"link"}