{"product_id":"zwo-7nm-sii-narrowband-filters","title":"ZWO 7nm SII Narrowband Filters","description":"\u003cdiv class=\"e-con-with-custom-width elementor-element elementor-element-37a8f2dc e-flex e-con-boxed sc_inner_width_none sc_layouts_column_icons_position_left e-con e-parent trx_addons_parallax_layers_inited trx_addons_parallax_blocks_inited e-lazyloaded\" data-id=\"37a8f2dc\" data-element_type=\"container\"\u003e\n\u003cdiv class=\"e-con-inner\"\u003e\n\u003cdiv class=\"elementor-element elementor-element-71ade4ed sc_fly_static elementor-widget elementor-widget-woocommerce-product-data-tabs trx_addons_parallax_layers_inited trx_addons_parallax_blocks_inited\" data-id=\"71ade4ed\" data-element_type=\"widget\" data-widget_type=\"woocommerce-product-data-tabs.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"woocommerce-tabs wc-tabs-wrapper\"\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content wc-tab\" id=\"tab-description\" role=\"tabpanel\" aria-labelledby=\"tab-title-description\"\u003e\n\u003cp\u003eNarrowband filter does not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.\u003c\/p\u003e\n\u003cp\u003eIt can reduce the transmission of certain wavelengths of light, specifically, those produced by artificial light including mercury vapor, and both high and low-pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).\u003c\/p\u003e\n\u003cp\u003eFrom 2018, ZWO Made progress on narrowband filters with the new standard, providing better performance.\u003c\/p\u003e\n\u003cp\u003eThe ZWO narrowband S-II 7nm filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation. It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants, use it with H-alpha and OIII narrowband filters (SHO Set) for tricolor CCD astrophotography.\u003c\/p\u003e\n\u003ch1 class=\"has-luminous-vivid-amber-color has-text-color wp-block-heading\"\u003e\u003cspan\u003eNew narrowband 1.25″ filter\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch3 class=\"has-vivid-red-color has-text-color has-medium-font-size\"\u003e\u003cstrong\u003eTechnical Parameter\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eSize: 1.25″\u003c\/p\u003e\n\u003cp\u003eThickness: 5.5mm+2.5mm(thread)\u003c\/p\u003e\n\u003cp\u003eGlass thickness: 1.85mm\u003c\/p\u003e\n\u003cp\u003eThread: M28.5*0.6 male thread\u003c\/p\u003e\n\u003cfigure class=\"wp-block-image aligncenter size-full\"\u003e\u003cimg decoding=\"async\" width=\"750\" height=\"500\" class=\"wp-image-2315\" src=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/46c598d3d3278b3cba0373e699e26737.jpg\" alt=\"\" srcset=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/46c598d3d3278b3cba0373e699e26737.jpg 750w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/46c598d3d3278b3cba0373e699e26737-730x487.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/46c598d3d3278b3cba0373e699e26737-370x247.jpg 370w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/46c598d3d3278b3cba0373e699e26737-410x273.jpg 410w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/46c598d3d3278b3cba0373e699e26737-300x200.jpg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\"\u003e\u003c\/figure\u003e\n\u003ch1 class=\"has-luminous-vivid-amber-color has-text-color wp-block-heading\"\u003e\u003cspan\u003eZWO New narrowband 31mm filter\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch3 class=\"has-vivid-red-color has-text-color wp-block-heading\"\u003e\u003cstrong\u003eTechnical Parameter\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eSize: D=31mm\u003c\/p\u003e\n\u003cp\u003eThickness: 2mm\u003c\/p\u003e\n\u003cp\u003eThe ZWO narrowband S-II 7nm filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation . It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants, use it with H-alpha and OIII narrowband filters (SHO Set) for tricolor CCD astrophotography.\u003c\/p\u003e\n\u003cfigure class=\"wp-block-image aligncenter size-full\"\u003e\u003cimg decoding=\"async\" width=\"600\" height=\"600\" class=\"wp-image-2325\" src=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/51ac385b1dda1b35763443727b9bdf70.jpg\" alt=\"\" srcset=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/51ac385b1dda1b35763443727b9bdf70.jpg 600w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/51ac385b1dda1b35763443727b9bdf70-150x150.jpg 150w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/51ac385b1dda1b35763443727b9bdf70-370x370.jpg 370w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/51ac385b1dda1b35763443727b9bdf70-120x120.jpg 120w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/51ac385b1dda1b35763443727b9bdf70-410x410.jpg 410w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/51ac385b1dda1b35763443727b9bdf70-460x460.jpg 460w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/51ac385b1dda1b35763443727b9bdf70-300x300.jpg 300w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/51ac385b1dda1b35763443727b9bdf70-550x550.jpg 550w\" sizes=\"(max-width: 600px) 100vw, 600px\"\u003e\u003c\/figure\u003e\n\u003ch1 class=\"has-luminous-vivid-amber-color has-text-color wp-block-heading\"\u003e\u003cspan\u003eZWO New narrowband 2″ filter\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch3 class=\"has-vivid-red-color has-text-color wp-block-heading\"\u003e\u003cstrong\u003eTechnical Parameter\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eName: ZWO New narrowband 2″ filter\u003c\/p\u003e\n\u003cp\u003eSize: 2″\u003c\/p\u003e\n\u003cp\u003eThickness: 5mm+2.5mm(thread)\u003c\/p\u003e\n\u003cp\u003eGlass thickness: 1.85mm\u003c\/p\u003e\n\u003cp\u003eThread: M48*0.75 male thread\u003c\/p\u003e\n\u003cfigure class=\"wp-block-image aligncenter size-full\"\u003e\u003cimg decoding=\"async\" width=\"800\" height=\"800\" class=\"wp-image-2322\" src=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/f1c3056abdbef24c16da3b7d00820055.jpg\" alt=\"\" srcset=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/f1c3056abdbef24c16da3b7d00820055.jpg 800w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/f1c3056abdbef24c16da3b7d00820055-630x630.jpg 630w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/f1c3056abdbef24c16da3b7d00820055-150x150.jpg 150w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/f1c3056abdbef24c16da3b7d00820055-730x730.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/f1c3056abdbef24c16da3b7d00820055-370x370.jpg 370w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/f1c3056abdbef24c16da3b7d00820055-120x120.jpg 120w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/f1c3056abdbef24c16da3b7d00820055-410x410.jpg 410w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/f1c3056abdbef24c16da3b7d00820055-460x460.jpg 460w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/f1c3056abdbef24c16da3b7d00820055-300x300.jpg 300w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/f1c3056abdbef24c16da3b7d00820055-768x768.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"\u003e\u003c\/figure\u003e\n\u003ch1 class=\"has-luminous-vivid-amber-color has-text-color wp-block-heading\"\u003e\u003cspan\u003eZWO New narrowband 36mm filter\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch3 class=\"has-vivid-red-color has-text-color wp-block-heading\"\u003e\u003cstrong\u003eTechnical Parameter\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eName: ZWO New narrowband  36mm filter\u003c\/p\u003e\n\u003cp\u003eSize: D=36mm\u003c\/p\u003e\n\u003cp\u003eThickness: 2mm\u003c\/p\u003e\n\u003cp\u003eThe ZWO narrowband S-II 7nm filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation . It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants, use it with H-alpha and OIII narrowband filters (SHO Set) for tricolor CCD astrophotography.\u003c\/p\u003e\n\u003cfigure class=\"wp-block-image aligncenter size-full\"\u003e\u003cimg loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" class=\"wp-image-2331\" src=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/e1b6742e10cb83c28fc7ebbbac5c7f60.jpg\" alt=\"\" srcset=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/e1b6742e10cb83c28fc7ebbbac5c7f60.jpg 600w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/e1b6742e10cb83c28fc7ebbbac5c7f60-150x150.jpg 150w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/e1b6742e10cb83c28fc7ebbbac5c7f60-370x370.jpg 370w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/e1b6742e10cb83c28fc7ebbbac5c7f60-120x120.jpg 120w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/e1b6742e10cb83c28fc7ebbbac5c7f60-410x410.jpg 410w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/e1b6742e10cb83c28fc7ebbbac5c7f60-460x460.jpg 460w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/e1b6742e10cb83c28fc7ebbbac5c7f60-300x300.jpg 300w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2022\/11\/e1b6742e10cb83c28fc7ebbbac5c7f60-550x550.jpg 550w\" sizes=\"(max-width: 600px) 100vw, 600px\"\u003e\u003c\/figure\u003e\n\u003cul class=\"wp-block-list\"\u003e\n\u003cli\u003eHubble look of images can be made by the combination of H-alpha, OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula)\u003c\/li\u003e\n\u003cli\u003eNarrowband imaging with SHO set (H-alpha, OIII-CCD and SII-CCD) can be done with the moon up in heavy light pollution, so your equipment is not sitting dormant for several weeks\u003c\/li\u003e\n\u003cli\u003eH-alpha filter is the first narrowband addition to LRGB set for most imagers who blend a black-and-white Ha image into RGB data to enhance structural detail while maintaining natural look\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"has-vivid-red-color has-text-color has-medium-font-size wp-block-heading\"\u003e\u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"wp-block-list\"\u003e\n\u003cli\u003eFWHM：7±0.5nm\u003c\/li\u003e\n\u003cli\u003eGlass Thickness 2.0+\/-0.03 mm  (31mm\/36mm)\u003c\/li\u003e\n\u003cli\u003eFine-optically polished to ensure accurate 1\/4 wavefront  over the both surfaces\u003c\/li\u003e\n\u003cli\u003eAbout 90% transmission at H-alpha line 656nm (H-Alpha filter )\u003c\/li\u003e\n\u003cli\u003eAbout 90% transmission at SII line 672nm (SII filter )\u003c\/li\u003e\n\u003cli\u003eAbout 90% transmission at major OIII line 500nm (OIII filter )\u003c\/li\u003e\n\u003cli\u003eInfrared wavelength 700-1100nm cut-off\u003c\/li\u003e\n\u003cli\u003e\u0026lt;0.1% transmission of off-band, OD3(Optical Density)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"has-vivid-red-color has-text-color has-medium-font-size\"\u003e\u003cstrong\u003eTransmission Curve\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cfigure class=\"wp-block-image size-full\"\u003e\u003cimg loading=\"lazy\" decoding=\"async\" width=\"989\" height=\"633\" class=\"wp-image-5345\" src=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/04\/0b7561e863701da396bce2092bc696ec-1.jpg\" alt=\"\" srcset=\"https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/04\/0b7561e863701da396bce2092bc696ec-1.jpg 989w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/04\/0b7561e863701da396bce2092bc696ec-1-730x467.jpg 730w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/04\/0b7561e863701da396bce2092bc696ec-1-370x237.jpg 370w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/04\/0b7561e863701da396bce2092bc696ec-1-840x538.jpg 840w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/04\/0b7561e863701da396bce2092bc696ec-1-410x262.jpg 410w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/04\/0b7561e863701da396bce2092bc696ec-1-300x192.jpg 300w, https:\/\/i.zwoastro.com\/wp-content\/uploads\/2023\/04\/0b7561e863701da396bce2092bc696ec-1-768x492.jpg 768w\" sizes=\"(max-width: 989px) 100vw, 989px\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"ZWO","offers":[{"title":"1.25\"","offer_id":48581375787227,"sku":"ZWO SII7nm1.25","price":181.0,"currency_code":"CAD","in_stock":true},{"title":"36mm","offer_id":48581375852763,"sku":"ZWO SII7nmD36","price":237.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":48581375885531,"sku":"ZWO SII7nmD2","price":349.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0224\/6770\/6960\/files\/zwo-filters-2-zwo-7nm-sii-narrowband-filters-1231668131.webp?v=1775746449","url":"https:\/\/telescopescanada.ca\/products\/zwo-7nm-sii-narrowband-filters","provider":"Telescopes Canada","version":"1.0","type":"link"}