{"product_id":"antlia-solar-discover-dualband-ha-cak-and-cah-filter-assembly-standard","title":"Antlia Solar Discover Dualband Ha CaK and CaH Filter Assembly - Standard","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003ePasses Ha (656.3nm), CaK (393.3nm), and CaH (396.8nm) wavelengths\u003c\/li\u003e\n\u003cli\u003eWithout extra light reduction, for refractors up to 100mm aperture only\u003c\/li\u003e\n\u003cli\u003eComes with an Antlia Energy Rejection Filter (ERF); ND filter factory-installed in the tube\u003c\/li\u003e\n\u003cli\u003eCompatible with both 1.25\" and 2\" adapters\u003c\/li\u003e\n\u003cli\u003eFully closed tube, CNC machined from aircraft aluminum and oxidized\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\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003eAntlia Solar Discover Dualband Ha CaK and CaH Filter Assembly - Standard\u003c\/h2\u003e\n      \u003cp\u003eThe Antlia Solar Discover Dualband Filter Assembly is designed specifically for solar photosphere photography, passing the Ha (656.3nm), CaK (393.3nm), and CaH (396.8nm) wavelengths. It comes with an Antlia Energy Rejection Filter (ERF) that blocks UV and IR light, and the necessary ND filter is factory-installed in the tube. Without extra light reduction it can only be used with \u003ca href=\"\/en-us\/collections\/refractors\"\u003erefractors\u003c\/a\u003e up to 100mm aperture. Antlia's transmittance requirement for the visible range (380-780nm) is a maximum of 0.0032%. The assembly enhances contrast and sharpness in solar images, with greater visibility of surface details and sunspots and higher contrast for solar faculae.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eDualband Imaging: Capturing the Photosphere in 656.3nm Ha, 393.3nm CaK, and 396.8nm CaH\u003c\/h3\u003e\n      \u003cp\u003eThis filter assembly passes Ha 656.3nm, CaK 393.3nm and CaH 396.8nm and is designed for photosphere imaging, such as sunspots. It enhances contrast and sharpness, giving greater visibility of surface details and sunspots and higher contrast for solar faculae.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n    \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eUse with Refractors up to 100mm Aperture\u003c\/h3\u003e\n      \u003cp\u003eThe assembly comes with an Antlia Energy Rejection Filter (ERF) that blocks UV and IR light, and the necessary ND filter is factory-installed in the tube. Without extra light reduction, the assembly can only be used with refractors up to 100mm aperture. With a telescope above 100mm aperture, Antlia requires additional light reduction for safe operation, such as ERF filters, solar safety films or lowering the telescope aperture. When you use a zenith mirror, the ERF filter must be installed in the correct position for safe operation; refer to Antlia's installation diagram.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eCNC-Machined Body with 1.25\" and 2\" Compatibility\u003c\/h3\u003e\n      \u003cp\u003eThe filters are assembled in a fully closed tube, CNC machined from aircraft aluminum and oxidized, and no stray light can escape from it. It installs like the Antlia CaK 3nm Solar \u003ca href=\"\/en-us\/collections\/herschel-wedges\"\u003eHerschel Wedge\u003c\/a\u003e, with the telescope at one end and the camera at the other. This Standard version is compatible with both 1.25\" and 2\" adapters, for easier and faster connection of telescopes and cameras.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n    \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eSolar Discover Assembly vs. Traditional Solar Film: A Contrast and Resolution Advantage\u003c\/h3\u003e\n      \u003cp\u003eCompared to other solar reducing films, the Solar Discover Dualband assembly enables higher contrast for solar imaging and higher resolution of the solar surface, and its design is less susceptible to wear and tear. It is also user-friendly.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Antlia Solar Discover assembly safe for visual solar observing?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003e\u003cstrong\u003eNo, Antlia does not recommend this product for visual observation.\u003c\/strong\u003e The IR coating range is slightly different from the ISO 12312-2 Standard for \u003ca href=\"\/en-us\/collections\/eclipse-glasses-and-viewers\"\u003eSolar Viewers\u003c\/a\u003e, and for technical requirements and safety considerations Antlia does not recommend it for visual use. Antlia adds that if the product is used for visual observation, all filters built into the assembly must be in good condition for safety. It is designed for solar photosphere photography.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Antlia Solar Discover on a telescope larger than 100mm aperture?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eOnly with additional light reduction. Without it, the assembly can only be used with \u003cstrong\u003erefractors up to 100mm aperture\u003c\/strong\u003e. Above 100mm aperture, you \u003cstrong\u003emust\u003c\/strong\u003e use additional light reduction for safe operation, such as ERF filters, solar safety films or lowering the telescope aperture.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat details can I capture with the Antlia Solar Discover's Ha, CaK, and CaH passbands?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThese three wavelengths reveal different solar features, enhancing your images:\u003c\/p\u003e\n    \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003ePhotosphere:\u003c\/strong\u003e The assembly is designed for solar photosphere imaging, such as sunspots, with greater visibility of surface details.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eFaculae:\u003c\/strong\u003e The assembly gives higher contrast for solar faculae.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Antlia Solar Discover compare to a white-light solar film filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eCompared to other solar reducing films, the Solar Discover Dualband assembly enables higher contrast for solar imaging and higher resolution of the solar surface, and its design is less susceptible to wear and tear.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the Antlia Solar Discover with a zenith mirror?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWhen you use a zenith mirror, the included \u003cstrong\u003eAntlia Energy Rejection Filter (ERF) must be installed in the correct position for safe operation\u003c\/strong\u003e, as shown in Antlia's installation diagram. The assembly itself installs with the telescope at one end and the camera at the other. Contact us if you have any question about the installation.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat happens if I disassemble the Antlia Solar Discover filter assembly?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003e\u003cstrong\u003eDisassembly of the assembly is prohibited and voids the 3-year warranty.\u003c\/strong\u003e Antlia does not accept any repair, return or exchange for this item once it has been disassembled.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSolar photosphere imaging filter assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWavelengths Passed\u003c\/td\u003e\n\u003ctd\u003eHa (656.3nm), CaK (393.3nm), CaH (396.8nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVersion\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTelescope Aperture\u003c\/td\u003e\n\u003ctd\u003eWithout extra light reduction, refractors up to 100mm only; above 100mm use additional light reduction\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAdapters\u003c\/td\u003e\n\u003ctd\u003eCompatible with 1.25\" and 2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eEnergy Rejection Filter (ERF)\u003c\/td\u003e\n\u003ctd\u003eIncluded, blocks UV and IR\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eND Filter\u003c\/td\u003e\n\u003ctd\u003eFactory-installed in the tube\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTube Construction\u003c\/td\u003e\n\u003ctd\u003eFully closed, CNC machined aircraft aluminum, oxidized\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVisible Light Transmittance (380-780nm)\u003c\/td\u003e\n\u003ctd\u003eTmax 0.0032%, Tmin 0.000061%\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eUVB Transmittance (280-315nm)\u003c\/td\u003e\n\u003ctd\u003eTmax 0.0032%\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eUVA Transmittance (315-380nm)\u003c\/td\u003e\n\u003ctd\u003eTmax 0.0032%\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIR Transmittance (780-1700nm)\u003c\/td\u003e\n\u003ctd\u003eTmax 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVisual Use\u003c\/td\u003e\n\u003ctd\u003eNot Recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eTelescope at one end, camera at the other; with a zenith mirror, the ERF must be in the correct position\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3-years (void if disassembled)\u003c\/td\u003e\n\u003c\/tr\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      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eSolar Discover Dualband filter assembly\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      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eAntlia Energy Rejection Filter (ERF)\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      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eND filter (factory-installed)\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\n\u003cli\u003e\n  3-Year Manufacturer Warranty. Disassembly of the assembly is prohibited and voids the warranty.\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Antlia","offers":[{"title":"Default Title","offer_id":51932625535261,"sku":"ANT-SD-STANDARD","price":149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/antlia-src-o7Iuz3AYw6Ac46Ac_171a03e9-66d8-42b7-a5e3-50e6400f01f4.jpg?v=1792550012","url":"https:\/\/davidastro.com\/en-us\/products\/antlia-solar-discover-dualband-ha-cak-and-cah-filter-assembly-standard","provider":"David Astro","version":"1.0","type":"link"}