{"product_id":"antlia-sho-4-5nm-narrowband-edge-filters-sho-edge","title":"Antlia SHO 4.5nm Narrowband EDGE Filters (SHO-EDGE)","description":"\u003ch2 data-mce-fragment=\"1\"\u003eAntlia SHO 4.5nm Narrowband EDGE Filters\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntlia SHO EDGE narrowband filter optimizes the FWHM (full width half maximum) to 4.5nm bandpass. The suppression of optical density (OD)5 on unwanted wavelengths and the excellent transmittance characteristics found in the Antlia 3nm Pro series has been incorporated into the 4.5nm EDGE narrowband filters. The result is that these filters deliver superior SNR (signal to noise ratio) and better contrast in your images.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntlia 4.5nm EGDE filters are designed to deliver high transmittance that provides you with the maximum signal to reveal the faintest of nebulae structures.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eConventional broader narrowband filters cause a heavy loss in transmission due to the strong Center Wavelength (CWL)-shift. We guarantee T\u0026gt;90% within 1nm range of the center bandwidth, which means that the SHO 4.5nm EDGE narrowband filters can guarantee high transmittance for working with both long focal ratios and fast optical systems. Blue-shift data shows that Antlia 4.5nm EDGE filters can be used with nearly all systems as fast as f\/3 with minimal loss in emission signal and meets the requirements of fast optics.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eApplication and Performance:\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eHigh transmittance and narrow bandwidth to maximize contrast\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSteep spectral profile minimizes halos around bright stars\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eA single substrate to eliminate internal reflections\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eNarrowband Objects: Emission Nebulae, Planetary, Wolf Rayet Nebulae and Supernova Remnants\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eUse in light polluted areas and dark sites\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eExtends imaging time when the moon is up\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntlia narrowband EDGE filters can be used down to f\/3 systems with minimal loss of signal\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAll Antlia unmounted filters are edge blackened to eliminate internal reflections from stray light\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSuperior optical reliability reduces post image processing\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis filter is only effective for deep sky objects that contain H-alpha, SII, OIII emissions\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cem data-mce-fragment=\"1\"\u003eSII Specifications:\u003c\/em\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBasic Substrate:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eOptical, Single \/ Non-glued substrate\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFilter Thickness:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e2mm+\/-0.05mm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFWHM (Full width at half maximum):\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e4.5nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eCWL (Central Wavelength):\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e671.6nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003ePeak Transmission:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e＞90%\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBlocking:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u0026gt; 5 OD(0.001% out of band blocking) @ 300-1000nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSurface Quality:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eS\/D (scratch\/dig)= 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eTransmitted Wavefront:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eLambda\/4 or better.\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003eParallelism:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eless than 30 arcsec\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg class=\"jz-image-viewer__img urst-none wh-auto ht-auto lazyloaded\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAghoqZkQYozeKEwgIwwgo4gAY.jpg\" alt=\"\" width=\"519\" height=\"296\" data-v-b1f4dd62=\"\" data-ll-status=\"loaded\" data-mce-fragment=\"1\" data-mce-src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAghoqZkQYozeKEwgIwwgo4gAY.jpg\"\u003e\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\n\u003cem data-mce-fragment=\"1\"\u003e\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h4\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cem data-mce-fragment=\"1\"\u003eH-Alpha Specifications:\u003c\/em\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBasic Substrate:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eOptical, Single \/ Non-glued substrate\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFilter Thickness:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e2mm+\/-0.05mm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFWHM (Full width at half maximum):\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e4.5nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eCWL (Central Wavelength):\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e656.3nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003ePeak Transmission:\u003c\/strong\u003e＞90%\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBlocking:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u0026gt; 5 OD (out of band blocking) @ 300-1000nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSurface Quality:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eS\/D (scratch\/dig)= 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eTransmitted Wavefront:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eLambda\/4 or better.\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003eParallelism:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eless than 30 arcsec\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg class=\"need_fix lazyloaded\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAgo5SZkQYonP3zmgYwwQo4gQY.jpg\" alt=\"Antlia H-alpha 4.5nm EDGE curve.jpg\" width=\"567\" height=\"324\" data-ll-status=\"loaded\" data-mce-fragment=\"1\" data-mce-src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAgo5SZkQYonP3zmgYwwQo4gQY.jpg\"\u003e\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\n\u003cem data-mce-fragment=\"1\"\u003e\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h4\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cem data-mce-fragment=\"1\"\u003eOIII Specifications:\u003c\/em\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBasic Substrate:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eOptical, Single \/ Non-glued substrate\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFilter Thickness:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e2mm+\/-0.05mm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFWHM (Full width at half maximum):\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e4.5nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eCWL (Central Wavelength):\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e500.7nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003ePeak Transmission:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u0026gt;85%\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBlocking:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u0026gt; 5 OD(0.001% out of band blocking) @ 300-1000nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSurface Quality:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eS\/D (scratch\/dig)= 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eTransmitted Wavefront:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eLambda\/4 or better. Parallelism: less than 30 arcsec\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg class=\"need_fix lazyloaded\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAg9ouZkQYogL624gMwvwo4gQY.jpg\" alt=\"Antlia OIII 4.5nm EDGE curve.jpg\" width=\"577\" height=\"330\" data-ll-status=\"loaded\" data-mce-fragment=\"1\" data-mce-src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAg9ouZkQYogL624gMwvwo4gQY.jpg\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eNot Recommended:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSolar imaging\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eNight visual observation\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eNot Permitted:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDO NOT LOOK AT THE SUN WITH THIS FILTER\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSerious eye damage will result if you fail to observe the warning\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWhen we design filters for astronomy imaging systems, we look at how they will work together with optical systems, carefully designing the out of band blocking rate, transmittance and band-pass parameters to achieve an optimum result. Each filter is individually tested and scanned by strict QC to ensure that the quality meets the high-performance parameters. The result is that Antlia is known for designing filters for astrophotography that achieve exceptional quality and performance parameters at affordable prices. We believe the price to performance ratio compares more favorably than similar premium filters in the market.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eSelected Filters\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"value\" data-mce-fragment=\"1\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntlia 3-Years Warranty Against Delamination\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e","brand":"Antlia","offers":[{"title":"1.25\" Round Mounted \/ SHO Filter Set","offer_id":43780896489701,"sku":"AF-SHO-EDGE-1.25","price":789.0,"currency_code":"CAD","in_stock":true},{"title":"1.25\" Round Mounted \/ H-Alpha","offer_id":43780896522469,"sku":"AF-HA-EDGE-1.25","price":263.0,"currency_code":"CAD","in_stock":true},{"title":"1.25\" Round Mounted \/ Sulfur II","offer_id":43780896588005,"sku":"AF-SII-EDGE-1.25","price":263.0,"currency_code":"CAD","in_stock":true},{"title":"1.25\" Round Mounted \/ Oxygen III","offer_id":43780896620773,"sku":"AF-OIII-EDGE-1.25","price":263.0,"currency_code":"CAD","in_stock":true},{"title":"31mm Round Unmounted \/ SHO Filter Set","offer_id":43780896653541,"sku":"AF-SHO-EDGE-31","price":828.0,"currency_code":"CAD","in_stock":true},{"title":"31mm Round Unmounted \/ H-Alpha","offer_id":43780896686309,"sku":"AF-HA-EDGE-31","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"31mm Round Unmounted \/ Sulfur II","offer_id":43780896719077,"sku":"AF-SII-EDGE-31","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"31mm Round Unmounted \/ Oxygen III","offer_id":43780896751845,"sku":"AF-OIII-EDGE-31","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"36mm Round Unmounted \/ SHO Filter Set","offer_id":43780896784613,"sku":"AF-SHO-EDGE-36","price":957.0,"currency_code":"CAD","in_stock":true},{"title":"36mm Round Unmounted \/ H-Alpha","offer_id":43780896817381,"sku":"AF-HA-EDGE-36","price":319.0,"currency_code":"CAD","in_stock":true},{"title":"36mm Round Unmounted \/ Sulfur II","offer_id":43780896850149,"sku":"AF-SII-EDGE-36","price":319.0,"currency_code":"CAD","in_stock":true},{"title":"36mm Round Unmounted \/ Oxygen III","offer_id":43780896882917,"sku":"AF-OIII-EDGE-36","price":319.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Round Mounted \/ SHO Filter Set","offer_id":43780896915685,"sku":"AF-SHO-EDGE-2","price":1233.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Round Mounted \/ H-Alpha","offer_id":43780896948453,"sku":"AF-HA-EDGE-2","price":411.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Round Mounted \/ Sulfur II","offer_id":43780896981221,"sku":"AF-SII-EDGE-2","price":411.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Round Mounted \/ Oxygen III","offer_id":43780897013989,"sku":"AF-OIII-EDGE-2","price":411.0,"currency_code":"CAD","in_stock":true},{"title":"50mm Round Unmounted \/ SHO Filter Set","offer_id":43780897046757,"sku":"AF-SHO-EDGE-50R","price":1491.0,"currency_code":"CAD","in_stock":true},{"title":"50mm Round Unmounted \/ H-Alpha","offer_id":43780897079525,"sku":"AF-HA-EDGE-50R","price":497.0,"currency_code":"CAD","in_stock":true},{"title":"50mm Round Unmounted \/ Sulfur II","offer_id":43780897112293,"sku":"AF-SII-EDGE-50R","price":497.0,"currency_code":"CAD","in_stock":true},{"title":"50mm Round Unmounted \/ Oxygen III","offer_id":43780897145061,"sku":"AF-OIII-EDGE-50R","price":497.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/antlia-sho-4-5nm-narrowband-edge-filters-sho-edge-astronomy-plus-1.webp?v=1690488412","url":"https:\/\/istronomyplus.com\/products\/antlia-sho-4-5nm-narrowband-edge-filters-sho-edge","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}