{"title":"Porte-filtres Baader FCCT","description":"\u003cp\u003eLes porte-filtres Baader FCCT sont conçus pour les systèmes d'imagerie rapides où la caméra se trouve à l'avant du télescope, comme la Celestron RASA 8\" avec les caméras QHY de 77mm. Imprimés en 3D, ils sont légers et compacts pour limiter l'obstruction ajoutée.\u003c\/p\u003e\u003cp\u003eLa gamme comprend des porte-filtres individuels, un lot de quatre, le porte-filtre FCCT 1 pour RASA 8\" et un filtre clair 2\" non monté (Ø 47.4mm) qui conserve le même chemin optique lorsque vous photographiez sans filtre couleur ou à bande étroite.\u003c\/p\u003e","products":[{"product_id":"baader-planetarium-fcct-1-filter-holder-for-rasa-8-inch-77mm-qhy-cameras","title":"Baader Planetarium FCCT 1 Filter Holder for RASA 8\" \u0026 77mm QHY Cameras","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned for the Celestron RASA 8\" Astrograph\u003c\/li\u003e\n\u003cli\u003eEnables filter use in a fast f\/2 optical system\u003c\/li\u003e\n\u003cli\u003eMaintains the RASA's critical back focus distance\u003c\/li\u003e\n\u003cli\u003eCompatible with QHY cameras featuring a 77mm diameter body\u003c\/li\u003e\n\u003cli\u003eSupports models such as the QHY174, QHY163, and QHY183\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\u003eDownloads\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\u003eBaader FCCT 1 Filter Holder for RASA 8\" \u0026amp; 77mm QHY Cameras\u003c\/h2\u003e\n\u003cp\u003eThe Baader FCCT 1 provides the definitive filter solution for the Celestron RASA 8\", specifically engineered to integrate 77mm diameter QHY cameras like the QHY174, QHY163, and QHY183. This filter holder works within the RASA 8's demanding optical path, enabling multi-band imaging without compromising the telescope's native f\/2 performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSeamless Filtration for the RASA 8 Optical System\u003c\/h3\u003e\n\u003cp\u003eThe Celestron RASA 8's aggressive f\/2 optical design leaves no room for a conventional filter wheel, which would violate the system's strict back focus requirements. The Baader FCCT 1 solves this by creating a slim, integrated filter holder that places the filter precisely within the correct optical path. This allows you to capture narrowband or LRGB data without introducing optical aberrations or vignetting caused by improper spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision-Fit for 77mm QHY Cameras\u003c\/h3\u003e\n\u003cp\u003eThis FCCT 1 is machined for a direct, secure fit with specific QHY camera bodies that feature a 77mm cylindrical diameter, including popular models like the QHY174, QHY163, and QHY183. This dedicated design ensures perfect optical alignment and mechanical stability, eliminating the potential for tilt and flexure that can degrade images from such a fast astrograph.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the Baader FCCT 1 for the RASA 8?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader FCCT 1 is a specialized filter holder. It is designed to let you use imaging filters with specific 77mm diameter QHY cameras on a Celestron RASA 8\" astrograph, an instrument that cannot accommodate a standard filter wheel due to its extremely critical back focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich QHY cameras are compatible with this FCCT 1 holder?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis holder is designed for QHY cameras that have a \u003cstrong\u003e77mm diameter cylindrical body\u003c\/strong\u003e. This includes popular models such as the \u003cstrong\u003eQHY174\u003c\/strong\u003e, \u003cstrong\u003eQHY163\u003c\/strong\u003e, and \u003cstrong\u003eQHY183\u003c\/strong\u003e. You should always measure your camera body to confirm its diameter before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy can't I use a standard filter wheel with my RASA 8?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe RASA 8 has an extremely short and precise back focus distance. A standard filter wheel is too thick and would place the camera sensor far outside the telescope's focal plane, making it impossible to achieve a sharp image across the field. The FCCT 1 is a thin, integrated solution that works within this critical constraint.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the FCCT 1 to shoot the Orion Nebula (M42) in narrowband with my RASA 8?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an ideal application for the FCCT 1. It allows you to insert narrowband filters (like H-alpha or OIII) into the RASA 8's optical path, enabling you to capture high-contrast images of emission nebulae like the Orion Nebula (M42) even from light-polluted locations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I'm imaging the Andromeda Galaxy (M31) with my RASA 8 and QHY183, what does the FCCT 1 allow me to do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe FCCT 1 lets you create a full-color LRGB image of broadband targets like the Andromeda Galaxy (M31). It provides the means to insert and swap Luminance, Red, Green, and Blue filters to capture separate channels, which can then be combined during processing to produce a detailed color photograph.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat size filters does the Baader FCCT 1 accept?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe provided specifications do not list the compatible filter size or type (e.g., mounted or unmounted). This information is crucial for proper operation, and you should confirm the required filter specifications from the manufacturer before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Compatibility\u003c\/td\u003e\n\u003ctd\u003eCelestron RASA 8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Compatibility\u003c\/td\u003e\n\u003ctd\u003eQHY Cameras with 77mm diameter body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Camera Models\u003c\/td\u003e\n\u003ctd\u003eQHY174, QHY163, QHY183, and others with same body diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e93mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of Adapter\u003c\/td\u003e\n\u003ctd\u003eCamera Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e21.5mm (incl. 2x 0.5mm Spacer wich can be added)\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\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFCCT I Filter Holder for RASA 8\" and 77mm QHY Cameras\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\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_FCCT_Filter_Changer_Camera_Tilter_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath 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\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium FCCT Filter Changer Camera Tilter Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":52913140597021,"sku":"BAA-2459070","price":430.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-FCCT-1-for-RASA-8-suitable-for-77mm-QHY-Cameras-e-g-QHY-174-163-183-1_011ef236-4da3-4804-9543-3752863df30c.jpg?v=1789086648"},{"product_id":"baader-planetarium-fcct-filter-holder-3d-printed","title":"Baader Planetarium FCCT Filter Holder – 3D-printed","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned for the Baader FCCT System\u003c\/li\u003e\n\u003cli\u003eAvailable for unmounted 31mm, 36mm and 2\" (Ø 47.4mm) filters\u003c\/li\u003e\n\u003cli\u003eIntegrated Neodymium magnets for secure, repeatable positioning\u003c\/li\u003e\n\u003cli\u003eLightweight 3D-printed construction\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\u003eDownloads\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\u003eFCCT Filter Holder – 3D-printed\u003c\/h2\u003e\n\u003cp\u003eEngineered for the Baader FCCT (Filter Changer Camera Tilter), this 3D-printed filter holder securely accommodates unmounted Baader filters in three sizes: 31mm and 36mm round filters with a 2mm thickness, or 2-inch filters with a precise Ø 47.4mm diameter. It provides a dedicated, lightweight solution for integrating specific unmounted filters into your imaging train, held in place by a robust magnetic retention system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 3D-Printed Holder for 31mm, 36mm and 2-inch Unmounted Filters\u003c\/h3\u003e\n\u003cp\u003eThis holder offers a direct and cost-effective solution for using unmounted Baader filters within the Baader FCCT. The 3D-printed construction ensures a precise, snug fit for the selected filter size, eliminating the need for a standard threaded cell, minimizing weight in the optical path and maximizing the clear aperture available within the compact FCCT system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eMagnetic Retention: Zero-Shift Alignment for Every Filter\u003c\/h3\u003e\n\u003cp\u003eIntegrated Neodymium magnets provide a firm, positive lock, preventing the filter holder from accidentally slipping or falling out of the FCCT housing. This magnetic system also guarantees exceptionally consistent and repeatable positioning, which is critical for maintaining the accuracy of your flat-field calibration frames between imaging sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the Baader FCCT Filter Holder designed for, and which size do I need?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is specifically designed to hold \u003cstrong\u003eunmounted Baader filters\u003c\/strong\u003e for use within the Baader FCCT (Filter Changer Camera Tilter) system. Choose the version that matches your filters: \u003cstrong\u003e31mm\u003c\/strong\u003e or \u003cstrong\u003e36mm\u003c\/strong\u003e round filters with a 2mm thickness, or \u003cstrong\u003e2-inch\u003c\/strong\u003e filters with a diameter of \u003cstrong\u003e47.4mm\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the magnetic system on the FCCT Filter Holder work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe holder uses built-in \u003cstrong\u003eNeodymium magnets\u003c\/strong\u003e to securely lock it into the FCCT housing. This prevents it from falling out and ensures it seats in the exact same position every time for consistent optical alignment and reliable flat-field calibration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use mounted filters with this FCCT holder?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. Each version is purpose-built for \u003cstrong\u003eunmounted\u003c\/strong\u003e Baader filters of a specific diameter (31mm, 36mm or 47.4mm). Filters that are pre-mounted in threaded cells, such as standard 1.25\" or 2\" mounted filters, will not fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is this FCCT filter holder 3D-printed?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 3D-printed construction allows for a precise, lightweight, and cost-effective design tailored specifically for each unmounted Baader filter size and the FCCT system. It is a specialized part for a very specific application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I'm taking flats with my telescope, why is the repeatable positioning of this FCCT holder important?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eConsistent, repeatable positioning is critical for accurate flat-field calibration. The magnetic seating ensures that any dust motes or imperfections on the filter return to the exact same spot in the optical path, allowing your calibration frames to perfectly subtract them from your light frames.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this FCCT holder compatible with filter drawers from other brands?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis filter holder is specifically designed for the \u003cstrong\u003eBaader FCCT system\u003c\/strong\u003e. It is not intended to be compatible with the Baader UFC (Universal Filter Changer) or with filter drawers or filter wheels from other manufacturers due to its unique shape and magnetic retention mechanism.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e2\" (Ø 47.4mm)\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eBaader FCCT System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired Filter Type\u003c\/td\u003e\n\u003ctd\u003eUnmounted Ø 47.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRetention System\u003c\/td\u003e\n\u003ctd\u003eNeodymium Magnets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e3D-Printed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e31mm\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eBaader FCCT (Filter Changer Camera Tilter) System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Filter Size\u003c\/td\u003e\n\u003ctd\u003e31mm Diameter (Unmounted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Filter Thickness\u003c\/td\u003e\n\u003ctd\u003e2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e3D-Printed Polymer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRetention Mechanism\u003c\/td\u003e\n\u003ctd\u003eIntegrated Neodymium Magnets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e36mm\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eBaader FCCT System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Size\u003c\/td\u003e\n\u003ctd\u003e36mm x 2mm, Unmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e3D-Printed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRetention Mechanism\u003c\/td\u003e\n\u003ctd\u003eNeodymium Magnets\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\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFCCT Filter Holder (selected size) – 3D-printed\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\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_FCCT_Filter_Changer_Camera_Tilter_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath 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\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium FCCT Filter Changer Camera Tilter Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"2\" (Ø 47.4mm)","offer_id":52913140760861,"sku":"BAA-2459085","price":59.0,"currency_code":"CAD","in_stock":true},{"title":"31mm","offer_id":52913140793629,"sku":"BAA-2459087","price":56.0,"currency_code":"CAD","in_stock":true},{"title":"36mm","offer_id":52913140826397,"sku":"BAA-2459088","price":57.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-FCCT-Filter-Holder-2-47-4mm-3D-printed-1_3e82ad12-5604-49c0-8026-254246716f72.jpg?v=1789086663"},{"product_id":"baader-planetarium-fcct-filter-holder-set-4x-3d-printed","title":"Baader Planetarium FCCT Filter Holder Set: 4x – 3D-printed","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSet of 4 individual filter holders\u003c\/li\u003e\n\u003cli\u003eDesigned for the Baader FCCT system\u003c\/li\u003e\n\u003cli\u003eAvailable for unmounted 31mm, 36mm (2mm thick) or 2-inch (Ø 47.4 mm) filters\u003c\/li\u003e\n\u003cli\u003eLightweight and durable 3D-printed construction\u003c\/li\u003e\n\u003cli\u003eIntegrated Neodymium magnets for secure seating\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\u003eDownloads\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\u003eFCCT Filter Holder Set: 4x – 3D-printed\u003c\/h2\u003e\n\u003cp\u003eThis set includes four 3D-printed filter holders designed for the Baader FCCT (Filter Changer Camera Tilter) system, each precision-made to secure unmounted Baader filters in your choice of size: 31mm or 36mm round filters with a 2mm thickness, or 2-inch filters with a 47.4 mm diameter. The design leverages powerful Neodymium magnets to ensure your filters are held firmly and consistently in the optical path, preventing accidental drops and maintaining repeatable alignment for calibration frames.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Fit for 31mm, 36mm and 47.4mm Unmounted Filters\u003c\/h3\u003e\n\u003cp\u003eThese holders are specifically engineered to accommodate unmounted Baader filters: 31mm and 36mm round filters with a 2mm thickness, or filters with a diameter of 47.4 mm, the standard for Baader's 2-inch filter line. This allows imagers to use their filters without the added thickness and potential vignetting of a standard metal cell, which is critical in fast optical systems. The 3D-printed construction provides a lightweight yet rigid housing that perfectly matches the filter's dimensions, preventing movement or rattling of the filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eNeodymium Magnets: Secure Seating for 4 Filters\u003c\/h3\u003e\n\u003cp\u003eEach of the four holders in this set is embedded with Neodymium magnets. This system ensures the filter drawer snaps into the exact same position every time, which is essential for the accuracy of flat fields. The magnetic force is strong enough to prevent the holder from falling out, even when the telescope is pointed at high angles, protecting your valuable filters from damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich filters are compatible, and which set should I choose?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eChoose the set that matches your unmounted Baader filters: \u003cstrong\u003e4x 31mm\u003c\/strong\u003e or \u003cstrong\u003e4x 36mm\u003c\/strong\u003e for round filters with a thickness of 2mm, or \u003cstrong\u003e4x 2\"\u003c\/strong\u003e for 2-inch filters with a glass diameter of \u003cstrong\u003e47.4 mm\u003c\/strong\u003e. None of the sets are compatible with filters that are pre-mounted in threaded cells.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow many holders come in one FCCT Filter Holder set?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis product includes a set of \u003cstrong\u003efour individual filter holders\u003c\/strong\u003e, allowing you to populate a filter drawer for LRGB, narrowband, or other filter combinations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat prevents the FCCT filter holders from falling out of the drawer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eEach holder has built-in \u003cstrong\u003eNeodymium magnets\u003c\/strong\u003e. These create a secure connection with the filter drawer, holding it firmly in place and ensuring it cannot fall out accidentally during use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use threaded, mounted filters with these FCCT holders?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. These holders are specifically made for \u003cstrong\u003eunmounted filter glass\u003c\/strong\u003e of 31mm, 36mm or 47.4 mm diameter. The outer metal cell of a mounted filter, such as a standard M48-threaded 2\" filter, will not fit inside these holders.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAs these FCCT holders are 3D-printed, how durable are they?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe holders are printed from a durable, high-quality material designed for astronomical accessories. While they are robust enough for regular use, they should be handled with care compared to machined aluminum parts. The lightweight nature of the 3D-printed material helps reduce the overall weight on your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill these holders work with my Baader FCCT II system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThese holders are designed for the Baader FCCT system. You should confirm compatibility with your specific version of the FCCT (I or II) and its corresponding filter drawer, as designs can vary. These are made for drawers that accept this specific magnetic, unmounted filter holder format.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e4x 2\" (Ø 47.4mm)\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e4 filter holders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eBaader FCCT System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Filter Size\u003c\/td\u003e\n\u003ctd\u003e2\" (Ø 47.4mm), Unmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRetention Mechanism\u003c\/td\u003e\n\u003ctd\u003eNeodymium Magnets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e3D-Printed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.04\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e4x 31mm\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e4 filter holders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eBaader FCCT System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Filter Size\u003c\/td\u003e\n\u003ctd\u003e31mm Diameter (Unmounted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Filter Thickness\u003c\/td\u003e\n\u003ctd\u003e2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRetention Mechanism\u003c\/td\u003e\n\u003ctd\u003eNeodymium Magnets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e3D-Printed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.05\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e4x 36mm\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e4 filter holders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eBaader FCCT System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Filter Size\u003c\/td\u003e\n\u003ctd\u003e36mm Diameter (Unmounted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Filter Thickness\u003c\/td\u003e\n\u003ctd\u003e2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRetention Mechanism\u003c\/td\u003e\n\u003ctd\u003eNeodymium Magnets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e3D-Printed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.04\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e4x 31mm\u003c\/h3\u003e\n\u003cul class=\"DAV-grid\"\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003e31mm Filter Holder for FCCT\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 4\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003ch3\u003e4x 36mm\u003c\/h3\u003e\n\u003cul class=\"DAV-grid\"\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003e4x Filterholder 36mm for FCCT (3D-printed)\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003efor unmounted Ø 36x2mm Baader Filter\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_FCCT_Filter_Changer_Camera_Tilter_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath 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\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium FCCT Filter Changer Camera Tilter Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"4x 2\" (Ø 47.4mm)","offer_id":52913141973277,"sku":"BAA-2459095","price":200.0,"currency_code":"CAD","in_stock":true},{"title":"4x 31mm","offer_id":52913142006045,"sku":"BAA-2459097","price":188.0,"currency_code":"CAD","in_stock":true},{"title":"4x 36mm","offer_id":52913142038813,"sku":"BAA-2459098","price":196.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-FCCT-Filter-Holder-Set-4x-2-47-4-mm-3D-printed-1_ac2d127c-a62a-41a4-906c-7d828be07aab.jpg?v=1789086682"},{"product_id":"baader-planetarium-fcct-2-inch-unmounted-clearglass-filter-47-4-mm","title":"Baader Planetarium FCCT 2\" Unmounted Clearglass Filter (Ø 47.4 mm)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2-inch (47.4 mm) unmounted clearglass filter\u003c\/li\u003e\n\u003cli\u003eDesigned to be parfocal with other Baader narrowband filters\u003c\/li\u003e\n\u003cli\u003eCMOS-optimized anti-reflection coatings\u003c\/li\u003e\n\u003cli\u003eEnables fast, precise focusing before switching to dim filters\u003c\/li\u003e\n\u003cli\u003eServes as a high-transmission protective dust shield for your sensor\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\u003eDownloads\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\u003eBaader FCCT 2\" Unmounted Clearglass Filter (Ø 47.4 mm)\u003c\/h2\u003e\n\u003cp\u003eThe Baader FCCT 2\" Unmounted Clearglass Filter provides a 47.4 mm clear optical window designed as a critical parfocal tool for narrowband imaging. This filter is mechanically matched in thickness to other Baader narrowband filters, ensuring your focus position remains unchanged when switching from this clear filter to a dim H-alpha or OIII filter, saving critical imaging time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe 2\" Parfocal Solution for Narrowband Imaging\u003c\/h3\u003e\n\u003cp\u003eFocusing through an extremely narrow bandpass filter can be a slow and frustrating process, as the dim view makes it difficult to achieve critical sharpness. This clearglass filter solves the problem by allowing you to use the full, bright light spectrum from a star to nail your focus quickly and accurately. Because it shares the same mechanical thickness as Baader's other CMOS-optimized filters, you can simply swap it out for your imaging filter without needing to refocus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 47.4 mm CMOS-Optimized Dust Shield\u003c\/h3\u003e\n\u003cp\u003eBeyond its focusing utility, this filter serves as a high-quality protective window for your camera sensor. The \"CMOS-optimized\" designation signifies that it features advanced anti-reflection coatings designed to suppress halos and internal reflections that can occur with highly reflective modern sensors. This ensures that it protects your sensor from dust without degrading your image quality, making it an essential component for any FCCT (Filter Changer Camera Tilter) or custom filter drawer setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 47.4 mm FCCT Clearglass filter help when imaging the Pelican Nebula (IC 5070) with a 3nm Ha filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eImaging the Pelican Nebula (IC 5070) with a 3nm H-alpha filter results in a very dim image, making focusing difficult. You would use the \u003cstrong\u003eBaader FCCT Clearglass filter\u003c\/strong\u003e first to focus on a nearby bright star. Once sharp focus is achieved, you switch to the 3nm Ha filter. Because they are parfocal, your focus will be perfect, and you can begin imaging immediately without struggling with the dim nebula view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"parfocal\" mean for this Baader Clearglass filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eParfocal\u003c\/strong\u003e means that this filter has the same optical thickness as other filters in Baader's CMOS-optimized line. This ensures that the focal point of your telescope does not shift when you switch between this clear filter and, for example, a Baader narrowband or LRGB filter. This eliminates the need to refocus with every filter change, which is a major time-saver during an imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the FCCT Clearglass filter just a plain piece of glass?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it is an optical-grade window with advanced, multi-layer anti-reflection coatings. Unlike a simple piece of glass, the \u003cstrong\u003e\"CMOS-optimized\"\u003c\/strong\u003e coatings are designed to maximize light transmission and prevent halos, reflections, and other artifacts common with sensitive CMOS sensors. However, note that this is a clearglass filter; it is not a UV\/IR cut filter and should not be used as a luminance filter with refractors or other scopes that are not corrected outside the visual spectrum.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I'm using a monochrome camera and a filter wheel, where would I install the 2\" FCCT Clearglass filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou would typically install the \u003cstrong\u003eBaader 2\" FCCT Clearglass filter\u003c\/strong\u003e in an empty slot in your filter wheel, often designated as the \"Luminance\" or \"Focus\" position. This allows your software to automatically rotate to the clear filter for focusing routines (like a V-curve analysis) before switching to your R, G, B, or narrowband filters to capture data.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is this filter unmounted with a 47.4 mm diameter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e47.4 mm diameter\u003c\/strong\u003e and unmounted format are specifically for systems like the Baader FCCT (Filter Changer Camera Tilter) and other custom filter holders that require unmounted filters of this size. It provides a larger clear aperture than standard mounted 2\" filters, helping to prevent vignetting with larger sensors and fast optical systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Baader Clearglass filter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile its primary design is for imaging, you could use it as a high-quality dust plug for your diagonal or eyepiece barrel. However, it offers no filtration or image enhancement for visual use. Its main value is realized in an astrophotography setup as a parfocal focusing tool.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eClearglass (Focusing \/ Dust Protection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eUnmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e47.4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eCMOS-Optimized, Anti-Reflection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Application\u003c\/td\u003e\n\u003ctd\u003eParfocal focusing for narrowband imaging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Application\u003c\/td\u003e\n\u003ctd\u003eSensor dust protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter shape\u003c\/td\u003e\n\u003ctd\u003eround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle or Set?\u003c\/td\u003e\n\u003ctd\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness (without cell)\u003c\/td\u003e\n\u003ctd\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003efull Spectrum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003edielectrically coated, planeoptically polished\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\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFCCT 2\" Unmounted Clearglass Filter (Ø 47.4 mm)\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\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Cleaning_and_Maintenance_of_Optics_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath 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\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium Cleaning and Maintenance of Optics Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_FCCT_Filter_Changer_Camera_Tilter_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath 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\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium FCCT Filter Changer Camera Tilter Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":52913179558173,"sku":"BAA-2458416U","price":82.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-FCCT-Filter-Clearglass-Filter-2-unmounted-47-4-mm-for-focusing-dust-protection-1_2f95b1ff-1d24-4174-ad29-2eecc2b32e6f.jpg?v=1789087359"}],"url":"https:\/\/davidastro.com\/fr\/collections\/baader-fcct-filter-holders.oembed","provider":"David Astro","version":"1.0","type":"link"}