{"product_id":"vespera-duo-band-filter-ac022","title":"Vaonis Vespera Duo-Band Filter (AC022)","description":"\u003ch1\u003eVaonis Vespera Duo Band Filter\u003c\/h1\u003e\n\u003cdiv class=\"woocommerce-tabs wc-tabs-wrapper\"\u003e\n\u003cdiv aria-labelledby=\"tab-title-description\" role=\"tabpanel\" id=\"tab-description\" class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content wc-tab\"\u003e\n\u003cp\u003e\u003cspan\u003eThe Vespera Dual Band Filter is a dual narrowband interference filter that will significantly improve your photo quality whether you are viewing from an urban or natural environment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBy selecting very precisely the wavelengths of Hydrogen Alpha (H-alpha) and Oxygen III (O-III), found mainly in nebulae, the filter will increase the contrast between the Stellar object and the sky background. Thus, its use makes it possible to obtain a higher-quality image, with sharper stars and finer details.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eKeep only the essential\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe Dual Band filter has been designed to allow only two particular wavelengths to pass through to the Vespera sensor:\u003cbr\u003e- O-III\u003cbr\u003e- H-alpha\u003c\/p\u003e\n\u003cp\u003eDue to the filtered wavelengths, it is particularly effective for photographing nebulae in emission (e.g.: Orion nebula M42, Heart nebula IC 1805 …), dark nebulae endowed with hydrogen (e.g.: Horsehead or Elephant's Trunk nebula...), planetary nebulae (e.g.: Owl nebula M97, Dumbbell nebula M27...), supernova remnants (e.g.: Veil nebula, Crab Nebula M1...).\u003c\/p\u003e\n\u003cp\u003eFor globular clusters (e.g.: Hercules cluster M13, cluster M92...), the selectivity of the Dual Band filter will help you to obtain sharper stars.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA filter specifically studied for Vespera\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe optical quality of the Dual Band filter has been specifically studied by our engineers to offer use at full aperture, without any impact on the optical diameter of the instrument. The lens ring is equipped with an electronic micro-card that allows Vespera to detect the Dual Band filter and adapt its observation and image processing parameters.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTransmission curve\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe filter features 12nm of bandwidth in each wavelength (O-III = 500.7nm, H-alpha = 656.3nm).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"woocommerce-product-attributes shop_attributes\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"woocommerce-product-attributes-item woocommerce-product-attributes-item--weight\"\u003e\n\u003cth class=\"woocommerce-product-attributes-item__label\"\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"woocommerce-product-attributes-item__value\"\u003e0.1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"woocommerce-product-attributes-item woocommerce-product-attributes-item--attribute_pa_colors\"\u003e\n\u003cth class=\"woocommerce-product-attributes-item__label\"\u003eColors\u003c\/th\u003e\n\u003ctd class=\"woocommerce-product-attributes-item__value\"\u003e\n\u003cp\u003eBlack (exterior)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"woocommerce-product-attributes-item woocommerce-product-attributes-item--attribute_pa_net-weight\"\u003e\n\u003cth class=\"woocommerce-product-attributes-item__label\"\u003eNet weight\u003c\/th\u003e\n\u003ctd class=\"woocommerce-product-attributes-item__value\"\u003e\n\u003cp\u003e17 g (0.6 oz)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"woocommerce-product-attributes-item woocommerce-product-attributes-item--attribute_pa_net-dimensions\"\u003e\n\u003cth class=\"woocommerce-product-attributes-item__label\"\u003eNet Dimensions\u003c\/th\u003e\n\u003ctd class=\"woocommerce-product-attributes-item__value\"\u003e\n\u003cp\u003eThickness: 0,6 cm (0.24 in), Width: 7,80 cm (3.07 in)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"woocommerce-product-attributes-item woocommerce-product-attributes-item--attribute_pa_materials\"\u003e\n\u003cth class=\"woocommerce-product-attributes-item__label\"\u003eMaterials\u003c\/th\u003e\n\u003ctd class=\"woocommerce-product-attributes-item__value\"\u003e\n\u003cp\u003eGlass, Plastic\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"woocommerce-product-attributes-item woocommerce-product-attributes-item--attribute_pa_package-weight\"\u003e\n\u003cth class=\"woocommerce-product-attributes-item__label\"\u003ePackage Weight\u003c\/th\u003e\n\u003ctd class=\"woocommerce-product-attributes-item__value\"\u003e\n\u003cp\u003e60 g (2.12 oz)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eIn the Box\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVespera Duo-Band Filter\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/istronomyplus.com\/pages\/vaonis-warranty\" target=\"_blank\"\u003eVaonis 3-Year Warranty\u003c\/a\u003e\u003c\/p\u003e","brand":"Vaonis","offers":[{"title":"Default Title","offer_id":43830957506789,"sku":"VO-AC022","price":559.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/vespera-duo-band-filter-ac022-astronomy-plus-1_05820b0d-2f9d-410f-b84c-124e4bdc9c36.jpg?v=1690488694","url":"https:\/\/istronomyplus.com\/products\/vespera-duo-band-filter-ac022","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}