{"title":"Antlia ALP-T Dual Band Filters","description":"\u003cp\u003eAntlia ALP-T dual band filters pass two emission lines at once, which makes narrowband imaging possible with a one-shot color camera. The Ha\/OIII filters target emission nebulae, while the SII\/Hb filters capture the other two lines for a fuller color palette.\u003c\/p\u003e\u003cp\u003eOptions include 5nm versions, a 5nm Ha\/OIII Highspeed model for fast optics, and tighter 3nm Ha\u0026amp;OIII and 3.5nm SII\u0026amp;Hb filters for stronger light pollution. Matched 2\" filter sets combine both pairs.\u003c\/p\u003e","products":[{"product_id":"antlia-alp-t-dualband-5nm-sii-hb-filter","title":"Antlia ALP-T Dualband 5nm SII\/Hb Filter","description":"\u003c!-- more --\u003e\n\u003cp\u003e\u003cspan\u003eThe ALP-T dual band 5nm SII\u0026amp;Hb \u003c\/span\u003e\u003cspan\u003ef\u003c\/span\u003e\u003cspan\u003eilter is a dual line-pass filter, which lets the deep red \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSulfur-II\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e line and the blue \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eHydrogen-Beta\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e line through and is used with one-shot color (OSC) cameras such as DSLR's or astronomical OSC cameras. It is a significant addition to the popular Antlia ALP-T dual band 5nm Ha\u0026amp;OIII filter and enables false-color images and narrow-band nebula images using OSC. When capturing data with this filter, the nebulae are recorded with greater contrast against the background than without it.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe\u003c\/span\u003e\u003cspan\u003e combination of these two dual band filters allows extreme narrow-band images with OSC cameras by capturing the spectral data from 4 channels i.e. Ha\/OIII\/SII\/Hb. The spectrum of these four channels can be separated and recombined into various colour palettes in your post-processing. The resulting images can be used for luminance contrast enhancement of traditional RGB-balanced images or creation of images in various popular false-color palettes such as \u003c\/span\u003e\u003cspan\u003eH-O-Hb, \u003c\/span\u003e\u003cspan\u003eS\u003c\/span\u003e\u003cspan\u003e-\u003c\/span\u003e\u003cspan\u003eH\u003c\/span\u003e\u003cspan\u003e-\u003c\/span\u003e\u003cspan\u003eO\u003c\/span\u003e\u003cspan\u003e,\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eH-S-OHb, H-O-O etc.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWhy design SII\u0026amp;Hb band\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003es pass\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003einstead of \u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003eOIII\u0026amp;SII bands?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe filter is dedicated to capture H-beta and SII emission lines. We know that SII is s\u003c\/span\u003e\u003cspan\u003eingly ionized sulfur that emits light in the deep red part of the spectrum, beyond H-alpha, \u003c\/span\u003e\u003cspan\u003ebut the \u003c\/span\u003e\u003cspan\u003econtribution of H-beta to emission lines in nebulae \u003c\/span\u003e\u003cspan\u003eis frequently overlooked, even though it is t\u003c\/span\u003e\u003cspan\u003ehe second most common Hydrogen emission after the H-alpha line. \u003c\/span\u003e\u003cspan\u003eC\u003c\/span\u003e\u003cspan\u003eapturing more OIII will boost the existing signal but does not give more information. However Hb has \u003c\/span\u003e\u003cspan\u003ethe \u003c\/span\u003e\u003cspan\u003epotential to reveal structures not seen using OIII.\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eThe de\u003c\/span\u003e\u003cspan\u003esign\u003c\/span\u003e\u003cspan\u003e is to capture the H-beta emission line in the certain nebulas that contain some blue spectrum, this cannot be captured by \u003c\/span\u003e\u003cspan\u003eH-alpha, SII and OIII filters\u003c\/span\u003e\u003cspan\u003e. \u003c\/span\u003e\u003cspan\u003eGreater and richer details will be captured in many nebulae images to achieve results with a superior signal-to-noise ratio. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt is generally accepted that the OIII signal is a relatively weaker contributor to nebulae images. The OIII bandpass sensitivity is an important consideration for any nebulae filter.\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eMost colour cameras (OSC) use a RGGB Bayer pattern. The allocation of twice as many green pixels as compared to either red or blue pixels, enables a much-improved capture of the OIII signal.\u003c\/span\u003e\u003cspan\u003e Furthermore, \u003c\/span\u003e\u003cspan\u003ehigher OIII signal can be achieved by additional exposure using the Antlia ALP-T Ha\u0026amp;O3 filter, then isolating the GB channels, followed by synthesis of an OIII channel to add into your stack.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn the situation where you may only want to add SII to your Ha\u0026amp;OIII data, then it may be preferable to buy one SII \u003c\/span\u003e\u003cspan\u003enarrowband\u003c\/span\u003e\u003cspan\u003e filter and \u003c\/span\u003e\u003cspan\u003eachieve a cleaner SII spectral emission. However, our new filter design (SII\u0026amp;Hb) includes the H-beta emission line which provides a distinct improvement in nebulae contrast and improved feature separation in Hb areas.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAntlia ALP-T Dual Band 5nm Ha\u0026amp;OIII filter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e: Dual band filter with a very narrow passband of 5nm in OIII and H-alpha to achieve a higher signal-to-noise ratio. The resulting contrast improvement for OSC is impressive.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAntlia ALP-T Dual Band 5nm SII\u0026amp;Hb filter: \u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003eDual band filter with a very narrow pass band of 5nm H-beta and S-II. This filter is ideal for \u003c\/span\u003e\u003cspan\u003ei\u003c\/span\u003e\u003cspan\u003encreas\u003c\/span\u003e\u003cspan\u003eing\u003c\/span\u003e\u003cspan\u003e contrast of nebulae that \u003c\/span\u003e\u003cspan\u003eemit\u003c\/span\u003e\u003cspan\u003e in the sulfur\u003c\/span\u003e\u003cspan\u003e and \u003c\/span\u003e\u003cspan\u003eH-beta\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003erange using OSC\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003cspan\u003e It provides additional feature separation and isolation in Hb areas.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe advanced multi-coatings on Antlia ALP-T dual band filters effectively isolates the red, Ha line, blue-green, OIII line, deep red SII and the blue H-beta lines from emission nebulae, with almost total suppression of optical density (OD)4.5 on unwanted wavelengths from light pollution, moonlight, and airglow. The result is that both\u003c\/span\u003e\u003cspan\u003e the\u003c\/span\u003e\u003cspan\u003e ALP-T dual band 5nm Ha\u0026amp;OIII and SII\u0026amp;Hb filter create\u003c\/span\u003e\u003cspan\u003es\u003c\/span\u003e\u003cspan\u003e a superior signal-to-noise ratio and better contrast in your OSC images.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eThe main features and app\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003eli\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003ecation\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePasses SII 672.4nm line and H-Beta 486.1nm line\u003c\/span\u003e\u003cspan\u003e;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEngineered specifically for use with DSLR, CMOS, and CCD color cameras\u003c\/span\u003e\u003cspan\u003e;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUltra \u003c\/span\u003e\u003cspan\u003eFWHM \u003c\/span\u003e\u003cspan\u003e5nm \u003c\/span\u003e\u003cspan\u003ea\u003c\/span\u003e\u003cspan\u003ellows for increasing in exposure time\u003c\/span\u003e\u003cspan\u003e;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRecommended to be used with ALP-T Dual Band 5nm Ha\u0026amp;OIII filter to \u003c\/span\u003e\u003cspan\u003ecreate images with better \u003c\/span\u003e\u003cspan\u003esignal\u003c\/span\u003e\u003cspan\u003e to noise and better \u003c\/span\u003e\u003cspan\u003eisolation\u003c\/span\u003e\u003cspan\u003e between the 4 channels\u003c\/span\u003e\u003cspan\u003e;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSuppression of optical density (OD)4.5 on unwanted wavelengths improves signal-to-noise\u003c\/span\u003e\u003cspan\u003e;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eExtremely steep bandpass and blackened edges \u003c\/span\u003e\u003cspan\u003eof unmounted sizes \u003c\/span\u003e\u003cspan\u003eto minimize internal reflections\u003c\/span\u003e\u003cspan\u003e;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIdeal flat-top and moderate bandpass reducing spectrum down shifts\u003c\/span\u003e\u003cspan\u003e;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIon Gun Assisted Deposition coating technology on the double-sided polished substrate making it the most consistent and accurate light pollution suppression filter\u003c\/span\u003e\u003cspan\u003e;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned to suppress artificial lighting from Bortle scale 1 to Bortle scale 8\u003c\/span\u003e\u003cspan\u003e;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt can also be used as a narrowband filter for monochrome cameras to save imaging time\u003c\/span\u003e\u003cspan\u003e;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNear IR (NIR) is blocked up to 1100nm\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e","brand":"Antlia","offers":[{"title":"2\" Mounted","offer_id":45077820997917,"sku":"ANT-ALP-T-SII-HB-2","price":497.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Antlia-ALP-T-Dualband-5nm-Filter.jpg?v=1685810699"},{"product_id":"antlia-alp-t-dualband-5nm-ha-oiii-highspeed-filter","title":"Antlia ALP-T Dualband 5nm Ha\/OIII Highspeed Filter","description":"\u003c!-- more --\u003e\n\u003cp\u003eALP-T Dual Band 5nm Highspeed Filters are further optimized to work with high-speed imaging systems by shifting slightly the passband and center wavelength. Using these highspeed filters between optics f\/2.2 and f\/3.6 shows much stronger and more contrasted in nebulae imaging compared to the standard version.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eFor optics f-ratios slower than f\/3.6, the standard ALP-T Dual Band 5nm filter is highly recommended. Meanwhile, if you seek the best possible performance with any optics faster than f\/2.2, the highspeed version is the best choice.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eBut keep in mind, the blue shift data by the computer simulation indicates narrowband filter shifts its bandwidth to shorter wavelengths with faster optics than f\/2, transmission at the emission wavelength may decrease perhaps 15%-20%. Although the Antlia ALP-T highspeed filter has similar transmission rates reduction in the H-a and OIII when the filter is used on fast optics, based on current standard version users’ data, it is evident that the filter still has the high performance of increase in emission nebula contrast and minimized halo.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe highspeed version price is the same as the standard filters and double benefits for the high-speed optics users. Worth mentioning is that Antlia inspected and measured products piece by piece with one of Agilent Cary’s professional spectrophotometer, resolution\/slit width is up to 0.2nm, which make us provide highly reliable and consistent products to you.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Antlia ALP-T dual band 5nm series filter is a dual line-pass filter that was designed to be used primarily with one-shot color (OSC) cameras such as DSLR's and astronomical OSC cameras. It can also be used as a narrowband filter for monochrome cameras to save imaging time. The advanced multi-coatings on our ALP-T ultra dual band filter effectively isolate the red Ha and the blue-green OIII lines light from emission nebulae, with almost total suppression of optical density (OD)4.5 on unwanted wavelengths from light pollution, moonlight, and airglow. The result is that our ALP-T dual band 5nm filter creates a superior signal-to-noise ratio and better contrast in your images.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe filter enables the capture of the two main emission nebulae bands at the same time, whilst suppressing unwanted light pollution. It enables you to capture cleaner data and reduces the post-processing efforts to isolate faint details from the background light pollution.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eApplication and Performance: \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned especially for fast astronomy optics, in particular f-ratios f\/2.2 to f\/3.6\u003c\/p\u003e\n\u003cp\u003eEngineered specifically for use with DSLR, CMOS, and CCD color cameras\u003c\/p\u003e\n\u003cp\u003eSuppression of optical density (OD)4.5 on unwanted wavelengths adds signal-to-noise\u003c\/p\u003e\n\u003cp\u003eExtremely steep bandpass edges minimize internal reflections\u003c\/p\u003e\n\u003cp\u003eIdeal flat-top and moderate bandpass reducing spectrum down shifts\u003c\/p\u003e\n\u003cp\u003eIon Gun Assisted Deposition coating technology on the double-sided polished substrate making it the most consistent and accurate light pollution suppression filter\u003c\/p\u003e\n\u003cp\u003eDesigned to suppress artificial lighting from Bortle scale 1 to Bortle scale 8\u003c\/p\u003e\n\u003cp\u003eNear IR (NIR) is blocked up to 1050nm\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTechnical Specifications:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" align=\"LEFT\" width=\"585px\" bordercolor=\"#000000\" _innercreatetable=\"true\" units=\"hasPercent\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\" bordercolor=\"#000000\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\" bordercolor=\"#000000\"\u003e\u003cspan\u003eHydrogen-alpha\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\" bordercolor=\"#000000\"\u003e\u003cspan\u003eOxygen III\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\" bordercolor=\"#000000\"\u003e\u003cspan\u003eFWHM\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\" bordercolor=\"#000000\"\u003e\u003cspan\u003e5nm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\" bordercolor=\"#000000\"\u003e\u003cspan\u003e5nm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\" bordercolor=\"#000000\"\u003e\u003cspan\u003eCWL (Central Wavelength)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\" bordercolor=\"#000000\"\u003e\u003cspan\u003e657.8nm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\" bordercolor=\"#000000\"\u003e\u003cspan\u003e502.2nm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\" bordercolor=\"#000000\"\u003e\u003cspan\u003ePeak Transmission\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"25.3%\" bordercolor=\"#000000\"\u003e\u003cspan\u003e88%\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"24.7%\" bordercolor=\"#000000\"\u003e\u003cspan\u003e82%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\" bordercolor=\"#000000\"\u003e\u003cspan\u003eBlocking\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\" rowspan=\"1\" valign=\"top\" bordercolor=\"#000000\"\u003e\n\u003cspan\u003e≥\u003c\/span\u003e\u003cspan\u003eOD4.5 @ 300-1050nm\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"22.6%\" bordercolor=\"#000000\"\u003e\u003cspan\u003eFilter Thickness\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\" valign=\"top\" bordercolor=\"#000000\"\u003e\u003cspan\u003e2mm+\/-0.05mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFilter Ring: \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2'' (M48*0.75)\u003c\/p\u003e\n\u003cp\u003eUltra-thin filter cell to minimize vignetting by maximize possible clear aperture\u003c\/p\u003e\n\u003cp\u003eBlack Anodized Finish\u003c\/p\u003e\n\u003cp\u003eLaser Engraving No Fading\u003c\/p\u003e","brand":"Antlia","offers":[{"title":"2\" Mounted","offer_id":45077823815965,"sku":"ANT-ALP-T-HS-2","price":540.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Antlia-ALP-T-Dualband-5nm-Filter_fd3f123c-ea97-42a5-8c88-c5ee1d114943.jpg?v=1685810834"},{"product_id":"antlia-alp-t-dualband-5nm-ha-oiii-filter","title":"Antlia ALP-T Dualband 5nm Ha\/OIII Filter","description":"\u003c!-- more --\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eAntlia ALP-T \u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003edual band\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003e 5nm\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003eHa\u0026amp;OIII\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003e filter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a dual line-pass filter which was designed to be used primarily with one-shot color (OSC) cameras such as DSLR's \u003c\/span\u003e\u003cspan\u003eand\u003c\/span\u003e\u003cspan\u003e astronomical OSC cameras. It can also be used as a narrowband filter for monochrome cameras to save imaging time. The advanced multi-coatings on \u003c\/span\u003e\u003cspan\u003eAntlia\u003c\/span\u003e\u003cspan\u003e ALP-T ultra dual band filter effectively isolates the red \u003c\/span\u003e\u003cspan\u003eHa\u003c\/span\u003e\u003cspan\u003e and the blue-green OIII lines light from emission nebulae, with almost total suppression of \u003c\/span\u003e\u003cspan\u003eo\u003c\/span\u003e\u003cspan\u003eptical \u003c\/span\u003e\u003cspan\u003ed\u003c\/span\u003e\u003cspan\u003eensity \u003c\/span\u003e\u003cspan\u003e(\u003c\/span\u003e\u003cspan\u003eOD\u003c\/span\u003e\u003cspan\u003e)\u003c\/span\u003e\u003cspan\u003e4.5 on unwanted wavelengths from light pollution, moonlight, and airglow. The result is that our ALP-T dual\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eband 5nm filter creates a superior signal-to-noise ratio and better contrast in your images.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe filter enables the capture of the two main emission nebulae bands at the same time, whilst suppressing unwanted light pollution. It enables you to capture cleaner data and reduces the post processing efforts to isolate faint details from the background light pollution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eApplication and Performance:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEngineered specifically for use with DSLR, CMOS, and CCD color cameras\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSuppression of \u003c\/span\u003e\u003cspan\u003eoptical density (OD)\u003c\/span\u003e\u003cspan\u003e4.5 on unwanted wavelengths adds signal-to-noise\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eExtremely steep \u003c\/span\u003e\u003cspan\u003ebandpass\u003c\/span\u003e\u003cspan\u003e edges minimize internal reflections\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIdeal flat-top and moderate bandpass reducing spectrum down shifts\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIon Gun Assisted Deposition coating technology on the double-sided polished substrate\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003emaking it the most\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003econsistent and accurate light pollution suppression filter \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned to suppress artificial lighting from \u003c\/span\u003e\u003cspan\u003eBortle scale\u003c\/span\u003e\u003cspan\u003e 1 to \u003c\/span\u003e\u003cspan\u003eBortle scale\u003c\/span\u003e\u003cspan\u003e 8\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNear IR (NIR) is blocked up to 1100nm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTechnical Specifications:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable cellspacing=\"0\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"232\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"217\"\u003e\n\u003cp\u003e\u003cspan\u003eHydrogen-alpha\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"210\"\u003e\n\u003cp\u003e\u003cspan\u003eOxygen III\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"232\"\u003e\n\u003cp\u003e\u003cspan\u003eFWHM\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"217\"\u003e\n\u003cp\u003e\u003cspan\u003e5nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"210\"\u003e\n\u003cp\u003e\u003cspan\u003e5nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"232\"\u003e\n\u003cp\u003e\u003cspan\u003eCWL (Central Wavelength)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"217\"\u003e\n\u003cp\u003e\u003cspan\u003e656.3nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"210\"\u003e\n\u003cp\u003e\u003cspan\u003e500.7nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"232\"\u003e\n\u003cp\u003e\u003cspan\u003ePeak Transmission\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"217\"\u003e\n\u003cp\u003e\u003cspan\u003e9\u003c\/span\u003e\u003cspan\u003e2\u003c\/span\u003e\u003cspan\u003e%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"210\"\u003e\n\u003cp\u003e\u003cspan\u003e8\u003c\/span\u003e\u003cspan\u003e8\u003c\/span\u003e\u003cspan\u003e%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"232\"\u003e\n\u003cp\u003e\u003cspan\u003eBlocking\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\" valign=\"top\" width=\"426\"\u003e\n\u003cp\u003e\u003cspan\u003e≥\u003c\/span\u003e\u003cspan\u003eOD4.5 @ 300-1100nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"232\"\u003e\n\u003cp\u003e\u003cspan\u003eFilter Thickness\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\" valign=\"top\" width=\"426\"\u003e\n\u003cp\u003e\u003cspan\u003e2mm+\/-0.05mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Antlia","offers":[{"title":"2\" Mounted","offer_id":45077868478749,"sku":"ANT-ALP-T-2","price":540.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Antlia-ALP-T-Dualband-5nm-Filter_422c581a-decd-4477-8e9a-260245f0f792.jpg?v=1685811364"},{"product_id":"antlia-alp-t-filter-set","title":"Antlia ALP-T Dualband 5nm Ha\/OIII and SII\/Hb Filter Set - 2\"","description":"","brand":"Antlia","offers":[{"title":"Default Title","offer_id":45077902983453,"sku":"ANT-ALP-T-SET","price":980.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Antlia-ALP-T-Dualband-5nm-Filter-Set.jpg?v=1685811953"},{"product_id":"antlia-alp-t-dual-band-ha-oiii-3nm-sii-hb-3-5nm-2-filter-set","title":"Antlia ALP-T Dual Band Ha\u0026OIII 3nm + SII\u0026Hb 3.5nm 2\" Filter Set","description":"\u003cul class=\"DAV-feature-list\"\u003e\n    \u003cli\u003e\n        Precise Narrowband Filtering for Exceptional Contrast\n    \u003c\/li\u003e\n    \u003cli\u003e\n        Enhanced Transmission for Superior Signal-to-Noise Ratio\n    \u003c\/li\u003e\n    \u003cli\u003e\n        Anti-Reflection Coating to Reduce Halo Effect\n    \u003c\/li\u003e\n    \u003cli\u003e\n        Optimized for Fast Optics up to f\/2\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n    \u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n    \u003cli\u003eSpecifications\u003c\/li\u003e\n    \u003cli\u003eIn the Box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n    \u003cli class=\"active\"\u003e       \n        \u003cdiv\u003e\n            \u003c!-- Title image text --\u003e\n            \u003cdiv class=\"DAV-bg-light\"\u003e\n                \u003c!-- Main Image --\u003e\n                \u003cdiv class=\"DAV-section-center\"\u003e\n                    \u003ch2\u003eAntlia ALP-T Dual Band Ha\u0026amp;OIII 3nm + SII\u0026amp;Hb 3.5nm 2\" Filter Set - Overview\u003c\/h2\u003e\n                    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623174875.jpg?v=1733252057\" alt=\"Antlia ALP-T Dual Band Ha\u0026amp;OIII 3nm + SII\u0026amp;Hb 3.5nm 2inches Filter Set\" class=\"DAV-img-banner\"\u003e\n                    \u003cp\u003e\n                        The Antlia ALP-T Dual Band Filter Set is a high-performance toolset designed for astrophotographers who demand precision, contrast, and exceptional image quality. This set includes the Ha\u0026amp;OIII 3nm Filter and the SII\u0026amp;Hβ 3.5nm Filter, providing unmatched narrowband imaging capability for capturing deep-sky objects with remarkable clarity and detail.                    \n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003c!-- Features Grid --\u003e\n            \u003cdiv class=\"DAV-feature-grid\"\u003e\n                \u003c!-- Feature Box 1 --\u003e\n                \u003cdiv class=\"DAV-feature-box\"\u003e\n                    \u003ch3\u003eHigh Signal-to-Noise Ratio\u003c\/h3\u003e\n                    \u003cp\u003e\n                        Superior imaging in challenging light conditions.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003c!-- Feature Box 2 --\u003e\n                \u003cdiv class=\"DAV-feature-box\"\u003e\n                    \u003ch3\u003eVersatile Applications\u003c\/h3\u003e\n                    \u003cp\u003e\n                        Suitable for capturing traditional RGB images or creating artistic false-color palettes.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003c!-- Feature Box 3 --\u003e\n                \u003cdiv class=\"DAV-feature-box\"\u003e\n                    \u003ch3\u003eEasy Integration\u003c\/h3\u003e\n                    \u003cp\u003e\n                        Compatible with optics slower than f\/4, with high-speed versions available for faster setups.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003c!-- Title text image --\u003e\n            \u003cdiv class=\"DAV-bg-light DAV-section-center\"\u003e\n                \u003ch3\u003eWhy Choose the Antlia ALP-T Filter Set?\u003c\/h3\u003e\n                \u003cp\u003eCombining these filters allows astrophotographers to capture the four key emission lines (H-alpha, OIII, SII, Hβ) in unparalleled detail. The advanced multi-coating technology suppresses light pollution, moonlight, and airglow while delivering outstanding contrast and clarity. Whether you’re imaging from urban or rural locations, this filter set ensures breathtaking astrophotography results.\u003c\/p\u003e\n            \u003c\/div\u003e\n\n            \u003c!-- image text --\u003e\n            \u003cdiv class=\"DAV-section-container\"\u003e\n                \u003c!-- Image Section --\u003e\n                \u003cdiv class=\"DAV-section-img\"\u003e\n                    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_67b5496f-f728-4fd1-b82a-563e5e8c9962.webp?v=1733252057\" alt=\"Ha\u0026amp;Oiii\"\u003e\n                \u003c\/div\u003e\n\n                \u003c!-- Text Section --\u003e\n                \u003cdiv class=\"DAV-section-text\"\u003e\n                    \u003ch3\u003eHa\u0026amp;OIII 3nm Filter\u003c\/h3\u003e                \n                    \u003cp\u003e\n                        This dual narrowband filter isolates the H-alpha (656.3nm) and OIII (500.7nm) emission lines, optimized for use with color cameras. With a Full Width Half Maximum (FWHM) bandwidth of 3nm, it effectively blocks unwanted wavelengths, including light pollution, moonlight, and airglow. The result is an enhanced signal-to-noise ratio and strikingly detailed nebula images.\n                    \u003c\/p\u003e\n                    \u003cul\u003e\n                        \u003cli\u003e\n\u003cb\u003ePrecise Transmission:\u003c\/b\u003e Passes H-alpha and OIII lines exclusively for improved contrast in celestial images.\u003c\/li\u003e\n                        \u003cli\u003e\n\u003cb\u003eExceptional Filtering:\u003c\/b\u003e Blocks optical density (OD) 4.5 on stray wavelengths, suppressing light pollution and enhancing nebula visibility.\u003c\/li\u003e\n                        \u003cli\u003e\n\u003cb\u003eIdeal for OSC Cameras:\u003c\/b\u003e Designed for color cameras, with applications in luminance filtering for monochrome cameras.\u003c\/li\u003e\n                        \u003cli\u003e\n\u003cb\u003eFlat-Top Bandpass:\u003c\/b\u003e Reduces spectrum shifts for consistent imaging performance, even under varying conditions.\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                    \n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003c!-- image text --\u003e\n            \u003cdiv class=\"DAV-section-container\"\u003e\n                \u003c!-- Text Section --\u003e\n                \u003cdiv class=\"DAV-section-text\"\u003e\n                    \u003ch3\u003eSII\u0026amp;Hβ 3.5nm Filter\u003c\/h3\u003e                \n                    \u003cp\u003e\n                        The SII\u0026amp;Hβ filter captures the deep red Sulfur-II (672.4nm) and blue Hydrogen-Beta (486.1nm) emission lines, providing complementary spectral data to the Ha\u0026amp;OIII filter. It’s perfect for creating detailed narrowband images and vibrant false-color palettes.\n                    \u003c\/p\u003e\n                    \u003cul\u003e\n                        \u003cli\u003e\n\u003cb\u003eDual Narrowband Capture:\u003c\/b\u003e Captures SII and H-beta lines simultaneously for rich spectral imaging.\u003c\/li\u003e\n                        \u003cli\u003e\n\u003cb\u003eEnhanced Imaging Contrast:\u003c\/b\u003e Blocks optical density (OD) 4.5 on unwanted wavelengths, optimizing contrast even in light-polluted conditions.\u003c\/li\u003e\n                        \u003cli\u003e\n\u003cb\u003eCreative Color Palettes:\u003c\/b\u003e Enables various combinations like H-O-Hβ or S-H-O for unique astrophotography.\u003c\/li\u003e\n                    \u003c\/ul\u003e        \n                \u003c\/div\u003e\n                \u003c!-- Image Section --\u003e\n                \u003cdiv class=\"DAV-section-img\"\u003e\n                    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_67b5496f-f728-4fd1-b82a-563e5e8c9962.webp?v=1733252057\" alt=\"Sii\u0026amp;Hb\"\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n        \u003c\/div\u003e\n    \u003c\/li\u003e\n\n    \u003cli\u003e\n        \u003ch2\u003eHa\u0026amp;OIII 3nm Filter\u003c\/h2\u003e\n        \u003ctable class=\"DAV-specifications\"\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eFWHM\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003e3nm\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003ePeak Transmission\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003e90% (H-alpha), 82% (OIII)\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eBlocking\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003e≥ OD4.5 (300-1100nm)\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eFilter Thickness\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003e2mm\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eRing Design\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eUltra-thin filter cell with M48*0.75 thread to reduce vignetting\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003c!-- Add more rows as needed --\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n\n        \u003ch2\u003eSII\u0026amp;Hβ 3.5nm Filter\u003c\/h2\u003e\n        \u003ctable class=\"DAV-specifications\"\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eFWHM\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003e3.5mm\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003ePeak Transmission\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003e90% (SII), 85% (Hβ)\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eBlocking\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003e≥ OD4.5 (300-1100nm)\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eRing Design\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eUltra-thin and black anodized to minimize reflections\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003c!-- Add more rows as needed --\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n    \u003c\/li\u003e\n    \n    \u003cli\u003e\n        \u003cul class=\"DAV-grid\"\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_67b5496f-f728-4fd1-b82a-563e5e8c9962.webp?v=1733252057\" alt=\"HaOIII\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003eHa\u0026amp;OIII Filter\u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_67b5496f-f728-4fd1-b82a-563e5e8c9962.webp?v=1733252057\" alt=\"SiiHb\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003eSii\u0026amp;Hb Filter\u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003c!-- Add more items as needed --\u003e\n        \u003c\/ul\u003e          \n    \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Antlia","offers":[{"title":"Default Title","offer_id":49428759281949,"sku":"ANT-ALP-T-3NM-KIT","price":1008.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_0b67e995-1011-4adb-9f12-948552797683.webp?v=1733252577"},{"product_id":"antlia-alp-t-dual-band-ha-oiii-3nm-filter","title":"Antlia ALP-T Dual Band Ha\u0026OIII 3nm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n    \u003cli\u003e\n        Precise Narrowband Filtering for Exceptional Contrast\n    \u003c\/li\u003e\n    \u003cli\u003e\n        Enhanced Transmission for Superior Signal-to-Noise Ratio\n    \u003c\/li\u003e\n    \u003cli\u003e\n        Anti-Reflection Coating to Reduce Halo Effect\n    \u003c\/li\u003e\n    \u003cli\u003e\n        Optimized for Fast Optics up to f\/2\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n    \u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n    \u003cli\u003eSpecifications\u003c\/li\u003e\n    \u003cli\u003eIn the Box\u003c\/li\u003e\n    \u003c!--\u003cli\u003eDownloads\u003c\/li\u003e--\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n    \u003cli class=\"active\"\u003e       \n        \u003cdiv\u003e\n            \u003c!-- Title image text --\u003e\n            \u003cdiv class=\"DAV-bg-light\"\u003e\n                \u003c!-- Main Image --\u003e\n                \u003cdiv class=\"DAV-section-center\"\u003e\n                    \u003ch2\u003eAntlia ALP-T Dual Band Ha\u0026amp;OIII 3nm - Overview\u003c\/h2\u003e\n        \n                    \u003cp\u003e\n                        The Antlia ALP-T Dual Band Filter Set is a high-performance toolset designed for astrophotographers who demand precision, contrast, and exceptional image quality. This set includes the Ha\u0026amp;OIII 3nm Filter and the SII\u0026amp;Hβ 3.5nm Filter, providing unmatched narrowband imaging capability for capturing deep-sky objects with remarkable clarity and detail.                    \n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003c!-- Features Grid --\u003e\n            \u003cdiv class=\"DAV-feature-grid\"\u003e\n                \u003c!-- Feature Box 1 --\u003e\n                \u003cdiv class=\"DAV-feature-box\"\u003e\n                    \u003c!--\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623174875.jpg?v=1733252057\" alt=\"Feature 3\" class=\"DAV-feature-img\"\u003e--\u003e\n                    \u003ch3\u003eHigh Signal-to-Noise Ratio\u003c\/h3\u003e\n                    \u003cp\u003e\n                        Superior imaging in challenging light conditions.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003c!-- Feature Box 2 --\u003e\n                \u003cdiv class=\"DAV-feature-box\"\u003e\n                    \u003c!--\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623174875.jpg?v=1733252057\" alt=\"Feature 3\" class=\"DAV-feature-img\"\u003e--\u003e\n                    \u003ch3\u003eVersatile Applications\u003c\/h3\u003e\n                    \u003cp\u003e\n                        Suitable for capturing traditional RGB images or creating artistic false-color palettes.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003c!-- Feature Box 3 --\u003e\n                \u003cdiv class=\"DAV-feature-box\"\u003e\n                    \u003c!--\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623174875.jpg?v=1733252057\" alt=\"Feature 3\" class=\"DAV-feature-img\"\u003e--\u003e\n                    \u003ch3\u003eEasy Integration\u003c\/h3\u003e\n                    \u003cp\u003e\n                        Compatible with optics slower than f\/4, with high-speed versions available for faster setups.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003c!--\n            \u003cdiv class=\"DAV-bg-light DAV-section-center\"\u003e\n                \u003ch3\u003eWhy Choose the Antlia ALP-T Filter Set?\u003c\/h3\u003e\n                \u003cp\u003eCombining these filters allows astrophotographers to capture the four key emission lines (H-alpha, OIII, SII, Hβ) in unparalleled detail. The advanced multi-coating technology suppresses light pollution, moonlight, and airglow while delivering outstanding contrast and clarity. Whether you’re imaging from urban or rural locations, this filter set ensures breathtaking astrophotography results.\u003c\/p\u003e\n                \u003cdiv class=\"DAV-grid-img\"\u003e\n                    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_67b5496f-f728-4fd1-b82a-563e5e8c9962.webp?v=1733252057\" alt=\"Highlight 1\"\u003e\n                    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_67b5496f-f728-4fd1-b82a-563e5e8c9962.webp?v=1733252057\" alt=\"Highlight 2\"\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            --\u003e\n            \n            \u003c!-- image text --\u003e\n            \u003cdiv class=\"DAV-section-container\"\u003e\n                \u003c!-- Image Section --\u003e\n                \u003cdiv class=\"DAV-section-img\"\u003e\n                    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_67b5496f-f728-4fd1-b82a-563e5e8c9962.webp?v=1733252057\" alt=\"Ha\u0026amp;Oiii\"\u003e\n                \u003c\/div\u003e\n\n                \u003c!-- Text Section --\u003e\n                \u003cdiv class=\"DAV-section-text\"\u003e\n                    \u003ch3\u003eHa\u0026amp;OIII 3nm Filter\u003c\/h3\u003e                \n                    \u003cp\u003e\n                        This dual narrowband filter isolates the H-alpha (656.3nm) and OIII (500.7nm) emission lines, optimized for use with color cameras. With a Full Width Half Maximum (FWHM) bandwidth of 3nm, it effectively blocks unwanted wavelengths, including light pollution, moonlight, and airglow. The result is an enhanced signal-to-noise ratio and strikingly detailed nebula images.\n                    \u003c\/p\u003e\n                    \u003cul\u003e\n                        \u003cli\u003e\n\u003cb\u003ePrecise Transmission:\u003c\/b\u003e Passes H-alpha and OIII lines exclusively for improved contrast in celestial images.\u003c\/li\u003e\n                        \u003cli\u003e\n\u003cb\u003eExceptional Filtering:\u003c\/b\u003e Blocks optical density (OD) 4.5 on stray wavelengths, suppressing light pollution and enhancing nebula visibility.\u003c\/li\u003e\n                        \u003cli\u003e\n\u003cb\u003eIdeal for OSC Cameras:\u003c\/b\u003e Designed for color cameras, with applications in luminance filtering for monochrome cameras.\u003c\/li\u003e\n                        \u003cli\u003e\n\u003cb\u003eFlat-Top Bandpass:\u003c\/b\u003e Reduces spectrum shifts for consistent imaging performance, even under varying conditions.\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003c!--\n            \u003cdiv class=\"DAV-section-container\"\u003e\n                \u003cdiv class=\"DAV-section-text\"\u003e\n                    \u003ch3\u003eSII\u0026Hβ 3.5nm Filter\u003c\/h3\u003e                \n                    \u003cp\u003e\n                        The SII\u0026Hβ filter captures the deep red Sulfur-II (672.4nm) and blue Hydrogen-Beta (486.1nm) emission lines, providing complementary spectral data to the Ha\u0026OIII filter. It’s perfect for creating detailed narrowband images and vibrant false-color palettes.\n                    \u003c\/p\u003e\n                    \u003cul\u003e\n                        \u003cli\u003e\u003cb\u003eDual Narrowband Capture:\u003c\/b\u003e Captures SII and H-beta lines simultaneously for rich spectral imaging.\u003c\/li\u003e\n                        \u003cli\u003e\u003cb\u003eEnhanced Imaging Contrast:\u003c\/b\u003e Blocks optical density (OD) 4.5 on unwanted wavelengths, optimizing contrast even in light-polluted conditions.\u003c\/li\u003e\n                        \u003cli\u003e\u003cb\u003eCreative Color Palettes:\u003c\/b\u003e Enables various combinations like H-O-Hβ or S-H-O for unique astrophotography.\u003c\/li\u003e\n                    \u003c\/ul\u003e        \n                \u003c\/div\u003e\n                \u003cdiv class=\"DAV-section-img\"\u003e\n                    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_67b5496f-f728-4fd1-b82a-563e5e8c9962.webp?v=1733252057\" alt=\"Sii\u0026Hb\"\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            --\u003e\n\n        \u003c\/div\u003e\n    \u003c\/li\u003e\n\n    \u003cli\u003e\n        \u003ch2\u003eHa\u0026amp;OIII 3nm Filter\u003c\/h2\u003e\n        \u003ctable class=\"DAV-specifications\"\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eFWHM\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003e3nm\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003ePeak Transmission\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003e90% (H-alpha), 82% (OIII)\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eBlocking\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003e≥ OD4.5 (300-1100nm)\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eFilter Thickness\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003e2mm\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eRing Design\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eUltra-thin filter cell with M48*0.75 thread to reduce vignetting\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003c!-- Add more rows as needed --\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n        \u003c!--\n        \u003ch2\u003eSII\u0026Hβ 3.5nm Filter\u003c\/h2\u003e\n        \u003ctable class=\"DAV-specifications\"\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eFWHM\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003e3.5mm\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003ePeak Transmission\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003e90% (SII), 85% (Hβ)\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eBlocking\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003e≥ OD4.5 (300-1100nm)\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eRing Design\u003c\/p\u003e\n                    \u003c\/td\u003e\n                    \u003ctd\u003e\n                        \u003cp\u003eUltra-thin and black anodized to minimize reflections\u003c\/p\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n        --\u003e\n    \u003c\/li\u003e\n    \n    \u003cli\u003e\n        \u003cul class=\"DAV-grid\"\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_67b5496f-f728-4fd1-b82a-563e5e8c9962.webp?v=1733252057\" alt=\"HaOIII\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003eHa\u0026amp;OIII Filter\u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            \u003c!--\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_67b5496f-f728-4fd1-b82a-563e5e8c9962.webp?v=1733252057\" alt=\"SiiHb\" class=\"DAV-img-box\"\u003e\n                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003eSii\u0026Hb Filter\u003c\/p\u003e\n                    \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/li\u003e\n            --\u003e\n        \u003c\/ul\u003e          \n    \u003c\/li\u003e\n    \u003c!--\n    \u003cli\u003e\n        \u003cul class=\"DAV-grid\"\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003ca href=\"\" target=\"_blank\"\u003e\n                    \u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\"\/\u003e\u003c\/svg\u003e\n                    \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003c\/a\u003e\n            \u003c\/li\u003e\n            \u003cli class=\"DAV-grid-item\"\u003e\n                \u003ca href=\"\" target=\"_blank\"\u003e\n                    \u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\/\u003e\u003c\/svg\u003e                \u003cdiv\u003e\n                    \u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003c\/a\u003e\n            \u003c\/li\u003e\n        \u003c\/ul\u003e\n    \u003c\/li\u003e\n    --\u003e\n\u003c\/ul\u003e\n","brand":"Antlia","offers":[{"title":"Default Title","offer_id":49428837531933,"sku":"ANT-ALP-T-3NM-HAOIII","price":554.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_0b67e995-1011-4adb-9f12-948552797683.webp?v=1733252577"},{"product_id":"antlia-alp-t-dual-band-sii-hb-3-5nm","title":"Antlia ALP-T Dual Band SII\u0026Hβ 3.5nm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003ePrecise Narrowband Filtering for Exceptional Contrast\u003c\/li\u003e\n\u003cli\u003eEnhanced Transmission for Superior Signal-to-Noise Ratio\u003c\/li\u003e\n\u003cli\u003eAnti-Reflection Coating to Reduce Halo Effect\u003c\/li\u003e\n\u003cli\u003eOptimized for Fast Optics up to f\/2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003c!-- Title image text --\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003c!-- Main Image --\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAntlia ALP-T Dual Band SII\u0026amp;Hβ 3.5nm - Overview\u003c\/h2\u003e\n\u003cp\u003eThe Antlia ALP-T Dual Band Filter Set is a high-performance toolset designed for astrophotographers who demand precision, contrast, and exceptional image quality. This set includes the Ha\u0026amp;OIII 3nm Filter and the SII\u0026amp;Hβ 3.5nm Filter, providing unmatched narrowband imaging capability for capturing deep-sky objects with remarkable clarity and detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Features Grid --\u003e\n\u003cdiv class=\"DAV-feature-grid\"\u003e\n\u003c!-- Feature Box 1 --\u003e\n\u003cdiv class=\"DAV-feature-box\"\u003e\n\u003ch3\u003eHigh Signal-to-Noise Ratio\u003c\/h3\u003e\n\u003cp\u003eSuperior imaging in challenging light conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Feature Box 2 --\u003e\n\u003cdiv class=\"DAV-feature-box\"\u003e\n\u003ch3\u003eVersatile Applications\u003c\/h3\u003e\n\u003cp\u003eSuitable for capturing traditional RGB images or creating artistic false-color palettes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Feature Box 3 --\u003e\n\u003cdiv class=\"DAV-feature-box\"\u003e\n\u003ch3\u003eEasy Integration\u003c\/h3\u003e\n\u003cp\u003eCompatible with optics slower than f\/4, with high-speed versions available for faster setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-section-container\"\u003e\n\u003cdiv class=\"DAV-section-text\"\u003e\n\u003ch3\u003eSII\u0026amp;Hβ 3.5nm Filter\u003c\/h3\u003e\n\u003cp\u003eThe SII\u0026amp;Hβ filter captures the deep red Sulfur-II (672.4nm) and blue Hydrogen-Beta (486.1nm) emission lines, providing complementary spectral data to the Ha\u0026amp;OIII filter. It’s perfect for creating detailed narrowband images and vibrant false-color palettes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eDual Narrowband Capture:\u003c\/b\u003e Captures SII and H-beta lines simultaneously for rich spectral imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEnhanced Imaging Contrast:\u003c\/b\u003e Blocks optical density (OD) 4.5 on unwanted wavelengths, optimizing contrast even in light-polluted conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCreative Color Palettes:\u003c\/b\u003e Enables various combinations like H-O-Hβ or S-H-O for unique astrophotography.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-section-img\"\u003e\u003cimg alt=\"Sii\u0026amp;Hb\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_67b5496f-f728-4fd1-b82a-563e5e8c9962.webp?v=1733252057\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_67b5496f-f728-4fd1-b82a-563e5e8c9962.webp?v=1733252057\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch2\u003eSII\u0026amp;Hβ 3.5nm Filter\u003c\/h2\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eFWHM\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e3.5mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003ePeak Transmission\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e90% (SII), 85% (Hβ)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eBlocking\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e≥ OD4.5 (300-1100nm)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eRing Design\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eUltra-thin and black anodized to minimize reflections\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cimg class=\"DAV-img-box\" alt=\"HaOIII\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_67b5496f-f728-4fd1-b82a-563e5e8c9962.webp?v=1733252057\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_67b5496f-f728-4fd1-b82a-563e5e8c9962.webp?v=1733252057\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSII\u0026amp;Hβ Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Antlia","offers":[{"title":"Default Title","offer_id":49428843594013,"sku":"ANT-ALP-T-3NM-SIIHB","price":511.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-filter-3nm-ha-oiii-antlia-alp-t-dual-band-highspeed-3nm-ha-oiii-3-5nm-sii-hb-2-mounted-filters-42550623338715_1024x_0b67e995-1011-4adb-9f12-948552797683.webp?v=1733252577"}],"url":"https:\/\/davidastro.com\/en-us\/collections\/antlia-alp-t-dual-band-filters.oembed","provider":"David Astro","version":"1.0","type":"link"}