{"product_id":"antlia-hb-3nm-narrowband-pro-2-filter","title":"Antlia H-Beta 3nm Narrowband Pro 2'' Filter (HB-PRO-2)","description":"\u003ch1 data-mce-fragment=\"1\"\u003eAntlia H-Beta 3nm Narrowband Pro 2'' Filter\u003c\/h1\u003e\n\u003cdiv data-mce-fragment=\"1\" class=\"value\"\u003e\n\u003cdiv data-content-type=\"row\" data-appearance=\"contained\" data-element=\"main\"\u003e\n\u003cdiv data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-background-images=\"{}\" data-background-type=\"image\" data-video-loop=\"true\" data-video-play-only-visible=\"true\" data-video-lazy-load=\"true\" data-video-fallback-src=\"\" data-element=\"inner\" data-pb-style=\"L0HDTR5\"\u003e\n\u003cdiv data-content-type=\"text\" data-appearance=\"default\" data-element=\"main\"\u003e\n\u003cp\u003eThe Antlia H-Beta Pro narrowband filter optimizes the full width at half maximum (FWHM) to a 3nm bandpass. As the bandwidth narrows, these 3nm Pro narrowband filters enhance the contrast of emission targets by effectively reducing unwanted background signals. Designed to achieve an impressive 88% transmission at the 486.1nm line, Antlia H-Beta 3nm Pro filters provide maximum signal and well-defined nebula\u003c\/p\u003e\n\u003ctable style=\"border-collapse: collapse; width: 48pt;\" width=\"64\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 48pt;\" width=\"64\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 15.0pt;\" height=\"20\"\u003e\n\u003ctd style=\"height: 15.0pt; width: 48pt;\" width=\"64\" align=\"right\" class=\"xl66\" height=\"20\"\u003e255.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003estructures.\u003c\/p\u003e\n\u003cp\u003eThe out-of-band blocking specification is rated at OD5 (0.001%), ensuring excellent signal-to-noise ratio (SNR) and effective cutoff rates to minimize interference from other wavelengths. These improved sharp cutoff astrophotography 3nm Pro filters are specifically engineered to reduce halos around bright stars.\u003c\/p\u003e\n\u003cp\u003eThe Antlia 3nm Pro series currently comprises Ha, SII, OIII, and H-Beta filters that capture exceptionally narrow data from four channels, enabling a greater range of combinations in post-production to meet your diverse requirements.\u003c\/p\u003e\n\u003cp\u003eIt is important to note that Antlia also offers dual narrowband filters designed for OSC cameras: the ALP-T Dualband Ha\u0026amp;OIII 3nm and SII\u0026amp;Hb 3.5nm. The synergy of these two dual band filters enables the capture of exceptionally narrow-band images with OSC cameras by acquiring spectral data from four channels—Ha, OIII, SII, and Hb. The spectra from these four channels can be separated and recombined into various color palettes during post-processing. The resulting images can enhance luminance contrast in traditional RGB-balanced images or facilitate the creation of visuals in several popular false-color palettes such as H-O-Hb, S-H-O, H-S-OHb, H-O-O, among others. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh transmittance and smallest bandwidth to maximize contrast\u003c\/li\u003e\n\u003cli\u003eSteep spectral profile minimizes halos around bright stars\u003c\/li\u003e\n\u003cli\u003eA single substrate to eliminate internal reflections\u003c\/li\u003e\n\u003cli\u003eNarrowband Objects: H-Beta Emission Nebulae\u003c\/li\u003e\n\u003cli\u003eUse in light polluted areas and dark sites\u003c\/li\u003e\n\u003cli\u003eExtend imaging time when the moon is up\u003c\/li\u003e\n\u003cli\u003eAll Antlia narrowband Pro filters can be used down to f\/3 with minimal loss of signal\u003c\/li\u003e\n\u003cli\u003eAll Antlia Narrowband filters unmounted are edge blackened to eliminate internal reflections from stray light\u003c\/li\u003e\n\u003cli\u003eSuperior optical reliability reduces post image processing\u003c\/li\u003e\n\u003cli\u003eThis filter is only effective for deep sky objects that contain H-Beta emissions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot Recommended:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSolar imaging\u003c\/li\u003e\n\u003cli\u003eNight visual observation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDO NOT LOOK AT THE SUN WITH ANTLIA FILTERS\u003c\/p\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute ca_additional_info\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"widget block block-static-block\"\u003e\n\u003cdiv data-content-type=\"row\" data-appearance=\"contained\" data-element=\"main\"\u003e\n\u003cdiv data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-background-images=\"{}\" data-background-type=\"image\" data-video-loop=\"true\" data-video-play-only-visible=\"true\" data-video-lazy-load=\"true\" data-video-fallback-src=\"\" data-element=\"inner\" data-pb-style=\"PLHTXDI\"\u003e\n\u003cdiv data-content-type=\"text\" data-appearance=\"default\" data-element=\"main\"\u003e\n\u003ch3\u003eTechnical Specifications \u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFWHM (Full width at half maximum): 3nm\u003c\/li\u003e\n\u003cli\u003eCWL (Central Wavelength): 486.1nm\u003c\/li\u003e\n\u003cli\u003ePeak Transmission: 88%\u003c\/li\u003e\n\u003cli\u003eBlocking: \u0026gt; 5 OD (out of band blocking) @ 300-1100nm\u003c\/li\u003e\n\u003cli\u003eFilter Thickness: 2mm+\/-0.05mm\u003c\/li\u003e\n\u003cli\u003eBasic Substrate: Optical, Single \/ Non-glued substrate\u003c\/li\u003e\n\u003cli\u003eSurface Quality: S\/D (scratch\/dig)= 60\/40 (Refer to MIL-O-13830\u003c\/li\u003e\n\u003cli\u003eTransmitted Wavefront: Lambda\/4 or better\u003c\/li\u003e\n\u003cli\u003eParallelism: less than 30 arcsec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFilter Ring:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2’’ (M48x0.75)\u003c\/li\u003e\n\u003cli\u003eUltra-thin filter cell to minimize vignetting\u003c\/li\u003e\n\u003cli\u003eBlack anodized finish\u003c\/li\u003e\n\u003cli\u003eLaser engraving No fading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp style=\"line-height: 10px;\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAntlia H-Beta 3nm Narrowband Pro 2'' Filter\u003c\/li\u003e\n\u003c\/ul\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\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\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\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Antlia","offers":[{"title":"Default Title","offer_id":46315355504869,"sku":"AF-HB-PRO-2","price":560.9,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/antlia-oiii-3nm-narrowband-pro-2-filter-open-box-astronomy-plus-1.webp?v=1731096310","url":"https:\/\/istronomyplus.com\/products\/antlia-hb-3nm-narrowband-pro-2-filter","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}