{"product_id":"b0f8nlp93j","title":"Astromania Telescope Filter 1.25 Inch Upgrated O-III Comet Filter Narrowband for Telescope, 99% High Transmission - Light Pollution Reduction for Astrophotography, Fit 1.25 Inch Telescope Accessory","description":"\u003cdiv\u003e\n\u003ch1\u003eAbout This\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eNew Upgrade: Astromania Upgrade Edition OIII Filter is used for capturing the gas tails and gas flows of comets; with the two brightest C2 emission lines at wavelengths of 511 and 514 nm; the full width at half maximum wavelength is less than 15 nm\u003c\/li\u003e\n\u003cli\u003eHigh transmittance: Within the wavelength range of 504 nanometers to 525 nanometers; only the double-ionized oxygen line with wavelengths between 510 nanometers and 518 nanometers passes through with 99% of the wavelengths\u003c\/li\u003e\n\u003cli\u003eFused Silica Matrix: The OIII filter is made of silica matrix and has an aluminum metal casing. It features dichroic interference and anti-reflective coating; it is suitable for areas with light pollution and dark sky areas to enhance contrast\u003c\/li\u003e\n\u003cli\u003eAdvanced Narrowband Filter: Blocks the neighboring OIII line (\u0026lt;1% transmission), which does not appear mainly in comet tails; narrowband filter can only increase the contrast between the nebula and the night sky but not brighten it\u003c\/li\u003e\n\u003cli\u003eStandard 1.25 Inch Thread: Suitable for large aperture telescopes with 1.25 inch focuser; compatible with 1.25 inch eyepieces; barlow lens; diagonal prism and other telescope accessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eOverview\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eBrand : Astromania\u003c\/li\u003e\n\u003cli\u003eMaterial : Aluminum, Glass\u003c\/li\u003e\n\u003cli\u003ePhoto Filter Thread Size : 31.75 Millimeters\u003c\/li\u003e\n\u003cli\u003eCoating Description : Multi Coating\u003c\/li\u003e\n\u003cli\u003ePhoto Filter Effect Type : Color Correcting\u003c\/li\u003e\n\u003cli\u003eWater Resistance Level : Waterproof\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"AstromaniaOptics","offers":[{"title":"Default Title","offer_id":45198513275071,"sku":"B0F8NLP93J","price":207.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/8070\/0095\/files\/71YZZRIt-ZL._AC_SX679.jpg?v=1772079795","url":"https:\/\/e261wg-xj.myshopify.com\/products\/b0f8nlp93j","provider":"AquaGuard","version":"1.0","type":"link"}