{"title":"Accessoires solaires Baader","description":"\u003cp\u003eLes accessoires solaires Baader Planetarium complètent une configuration d'observation ou d'imagerie solaire. Les pare-soleil percés en 2\", T-2 ou M68 bloquent l'éblouissement autour de la caméra ou de l'oculaire, et le diaphragme solaire réglable en continu (13mm à 113mm) permet de réduire l'ouverture selon la turbulence atmosphérique.\u003c\/p\u003e\u003cp\u003eLa collection comprend aussi les systèmes télécentriques TZ-3S et TZ-4S pour SunDancer II, les télécompresseurs SolarSpectrum 0.4x et 0.7x, un écran de projection solaire et la visionneuse d'éclipse AstroSolar.\u003c\/p\u003e","products":[{"product_id":"baader-solarspectrum-0-7x-telecompressor-2","title":"Baader Télécompresseur SolarSpectrum 0.7x - 2\"","description":"\u003c!-- more --\u003e\u003cul\u003e\n\n\u003cli\u003eMonté sur le côté oculaire du filtre SolarSpectrum et réduit la distance focale étendue du système télécentrique vers le bas d'un facteur de 0,7\u003c\/li\u003e\n\n\u003cli\u003eDistance de travail : 110 mm (distance au capteur de la caméra)\u003c\/li\u003e\n\n\u003cli\u003eFiletages externes de 2\" des deux côtés, s'adaptant à l'adaptateur de bride universel #2958240\u003c\/li\u003e\n\n\u003cli\u003eLe télépresseur est utilisé pour ajuster la distance focale à des conditions de vision éventuellement médiocres et \/ ou agrandir le champ pour les applications photographiques ou webcam\u003c\/li\u003e\n\n\n\u003c\/ul\u003e \u003cp\u003eBaader Planetarium a conçu ce nouveau système télécentrique optimisé pour une utilisation avec les systèmes Solar Spectrum H-Alpha. Un système télécentrique est utilisé pour convertir les télescopes à rapport focal plus court en un faisceau f\/25 ou supérieur requis par le filtre à spectre solaire monté à l'arrière. Plus qu'une lentille de Barlow ou un système basé sur une lentille de Barlow, le télécentrique Baader garantit que le faisceau de sortie maintient un angle d'incidence normal constant sur toute la largeur du filtre. Le résultat est une bande passante constante et un contraste d'image élevé sur tout le champ de vision. Ce système de lentilles a été optimisé pour maintenir une qualité optique extrêmement élevée pour une utilisation solaire dédiée (\u0026gt; 99 % strehl à 656,3 nm). Les systèmes Barlow ou basés sur Barlow plus simples ne sont pas en mesure de produire ce niveau de précision ou de télécentricité. Les revêtements IR diélectriques durs aident en outre à rejeter l'énergie IR et à protéger l'étalon arrière d'une énergie thermique excessive.\u003c\/p\u003e \u003cp\u003eLes filtres H-alpha du spectre solaire nécessitent une lumière parallèle avec un trajet de rayon d'au moins f\/30. Ceci est réalisé par une distance focale avec nos systèmes télécentriques (et éventuellement aussi en obscurcissant l'objectif avec l'iris). En raison de l'extension de la distance focale dans de nombreux télescopes, le disque solaire complet ne peut pas être vu même en utilisant des oculaires avec f = 30 à 35 mm.\u003c\/p\u003e\n\u003cp\u003e Les deux télépresseurs à spectre solaire sont montés côté oculaire directement sur le filtre et réduisent à nouveau la distance focale précédemment étendue d'un facteur de 0,4x (#2459260) et 0,7x (#2459259) avec pour résultat que maintenant tout le disque solaire avec des proéminences est à nouveau visible.\u003c\/p\u003e\n\u003cp\u003e Un télécompresseur est également utilisé pour ajuster la distance focale à des conditions de vision éventuellement médiocres et \/ ou agrandir le champ pour les applications photographiques ou webcam.\u003c\/p\u003e \u003cp\u003ePour fixer le télécompresseur, utilisez notre bride universelle 2″ (# 295 8240); il se fixe avec quatre vis directement sur le boîtier du filtre (voir illustration), le télécompresseur est monté directement dans le filetage 2″ de la bride universelle. Le filetage principal du compresseur est également un filetage mâle de 2″. Cela peut être changé si nécessaire avec des pièces de notre système d'accessoires T-2 soit par un filetage interne ou externe T-2.\u003c\/p\u003e\n\u003cp\u003e \u003cspan\u003eLes systèmes télécentriques sont disponibles en version 2X, 3X et 4X. Veuillez nous contacter pour plus de détails et la disponibilité.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv data-custom-tab\u003e\n\n\u003cp data-custom-tab-title\u003eCaractéristiques\u003c\/p\u003e\n\n\u003cdiv\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459259\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n \u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825008671\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,105\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv class=\"moretab\" data-title=\"Downloads \u0026amp; Support\"\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_notes_on_safe_use_of_the_baader_d_erf_filter.pdf?v=1684341028?v=1586883194\" target=\"_blank\"\u003eRemarques sur l'utilisation en toute sécurité du filtre Baader D-ERF\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_solar_spectrum_narrowband_heated_h_alpha_filters.pdf?v=1684341030?v=1590568726\" target=\"_blank\"\u003eFiltres H-alpha chauffés à bande étroite à spectre solaire\u003c\/a\u003e\u003c\/p\u003e\n\n\n\u003c\/div\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967380713757,"sku":"BAA-2459259","price":456.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-SolarSpectrum-0-7x-Telecompressor-2-inch-1__72390.1597111111.1280.1280.jpg?v=1684341706"},{"product_id":"baader-solarspectrum-research-grade-0-4x-telecompressor-2","title":"Baader Télécompresseur SolarSpectrum Grade de Recherche 0.4x - 2\"","description":"\u003c!-- more --\u003e\u003cul\u003e\n\n\u003cli\u003eComme le télécentrique TZ-3, le télépresseur RG 0.4x dispose d'une ouverture claire de 46 mm, parfaitement adapté même aux grands filtres H-alpha de qualité recherche SolarSpectrum RG46.\u003c\/li\u003e\n\n\u003cli\u003eDistance de travail : 74 mm (distance au capteur de la caméra), optimisée pour la vidéographie et l'imagerie complète du disque solaire. Champ d'image corrigé Ø 16 mm en conjonction avec le TZ-3\u003c\/li\u003e\n\n\u003cli\u003eSe monte directement sur le côté oculaire du corps du filtre SolarSpectrum et réduit le rapport f \/ étendu télécentrique d'un facteur de 0,4\u003c\/li\u003e\n\n\u003cli\u003eFiletages externes de 2\" des deux côtés, s'adaptant à l'adaptateur de bride universel SolarSpectrum #2958240\u003c\/li\u003e\n\n\u003cli\u003eLe télépresseur RG 0.4x sert à ajuster la distance focale afin d'améliorer les mauvaises conditions de vision et\/ou d'élargir le champ de vision pour les applications d'imagerie photographique ou chanceuse.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e \u003cp\u003eBaader Planetarium a conçu ce nouveau système télécentrique optimisé pour une utilisation avec les systèmes Solar Spectrum H-Alpha. Un système télécentrique est utilisé pour convertir les télescopes à rapport focal plus court en un faisceau f\/25 ou supérieur requis par le filtre à spectre solaire monté à l'arrière. Plus qu'une lentille de Barlow ou un système basé sur une lentille de Barlow, le télécentrique Baader garantit que le faisceau de sortie maintient un angle d'incidence normal constant sur toute la largeur du filtre. Le résultat est une bande passante constante et un contraste d'image élevé sur tout le champ de vision. Ce système de lentilles a été optimisé pour maintenir une qualité optique extrêmement élevée pour une utilisation solaire dédiée (\u0026gt; 99 % strehl à 656,3 nm). Les systèmes Barlow ou basés sur Barlow plus simples ne sont pas en mesure de produire ce niveau de précision ou de télécentricité. Les revêtements IR diélectriques durs aident en outre à rejeter l'énergie IR et à protéger l'étalon arrière d'une énergie thermique excessive.\u003c\/p\u003e \u003cp\u003eLes filtres H-alpha du spectre solaire nécessitent une lumière parallèle avec un trajet de rayon d'au moins f\/30. Ceci est réalisé par une distance focale avec nos systèmes télécentriques (et éventuellement aussi en obscurcissant l'objectif avec l'iris). En raison de l'extension de la distance focale dans de nombreux télescopes, le disque solaire complet ne peut pas être vu même en utilisant des oculaires avec f = 30 à 35 mm.\u003c\/p\u003e\n\u003cp\u003e Les deux télépresseurs à spectre solaire sont montés côté oculaire directement sur le filtre et réduisent à nouveau la distance focale précédemment étendue d'un facteur de 0,4x (#2459260) et 0,7x (#2459259) avec pour résultat que maintenant tout le disque solaire avec des proéminences est à nouveau visible.\u003c\/p\u003e\n\u003cp\u003e Un télécompresseur est également utilisé pour ajuster la distance focale à des conditions de vision éventuellement médiocres et \/ ou agrandir le champ pour les applications photographiques ou webcam.\u003c\/p\u003e \u003cp\u003ePour fixer le télécompresseur, utilisez notre bride universelle 2″ (# 295 8240); il se fixe avec quatre vis directement sur le boîtier du filtre (voir illustration), le télécompresseur est monté directement dans le filetage 2″ de la bride universelle. Le filetage principal du compresseur est également un filetage mâle de 2″. Cela peut être changé si nécessaire avec des pièces de notre système d'accessoires T-2 soit par un filetage interne ou externe T-2.\u003c\/p\u003e\n\u003cp\u003e \u003cspan\u003eLes systèmes télécentriques sont disponibles en version 2X, 3X et 4X. Veuillez nous contacter pour plus de détails et la disponibilité.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv data-custom-tab\u003e\n\n\u003cp data-custom-tab-title\u003eCaractéristiques\u003c\/p\u003e\n\n\u003cdiv\u003e\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459260\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n \u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825008671\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,105\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv class=\"moretab\" data-title=\"Downloads \u0026amp; Support\"\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_notes_on_safe_use_of_the_baader_d_erf_filter.pdf?v=1684341028?v=1586883194\" target=\"_blank\"\u003eRemarques sur l'utilisation en toute sécurité du filtre Baader D-ERF\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_solar_spectrum_narrowband_heated_h_alpha_filters.pdf?v=1684341030?v=1590568726\" target=\"_blank\"\u003eFiltres H-alpha chauffés à bande étroite à spectre solaire\u003c\/a\u003e\u003c\/p\u003e\n\n\n\u003c\/div\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967380779293,"sku":"BAA-2459260","price":533.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-SolarSpectrum-Research-Grade-0-4x-Telecompressor-2-inch-1__79716.1597111112.1280.1280.jpg?v=1684341713"},{"product_id":"baader-planetarium-solar-projection-screen-bsps","title":"Baader Planetarium Solar Projection Screen (BSPS)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSafe, Enclosed Solar Projection\u003c\/li\u003e\n\u003cli\u003eIdeal for Group Viewing and Public Outreach\u003c\/li\u003e\n\u003cli\u003eObserve Sunspots, Limb Darkening, and Eclipses\u003c\/li\u003e\n\u003cli\u003eCompatible with T-2 Eyepiece Projection Adapters\u003c\/li\u003e\n\u003cli\u003eIncludes Cardboard Housing Kit with Option for 3D Printing\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 Solar Projection Screen (BSPS)\u003c\/h2\u003e\n\u003cp\u003eThe Baader Solar Projection Screen (BSPS) offers a completely safe method for observing the Sun, projecting a clear image for small groups to view together. This closed-system design eliminates the risks of open projection, making it ideal for tracking sunspots, limb darkening, and the progression of a solar eclipse without any danger of accidental viewing through the eyepiece.\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\u003eSafe Solar Projection: A Closed System for Group Viewing\u003c\/h3\u003e\n\u003cp\u003eUnlike traditional open projection screens, the BSPS creates an enclosed light path from the eyepiece to the viewing surface. This design prevents anyone from accidentally placing a hand in the focused beam of light or looking directly into the eyepiece, making it an exceptionally safe tool for educational settings and public events.\u003c\/p\u003e\n\u003cp\u003eThe rear-projection screen allows multiple people to observe solar phenomena simultaneously. When used with a tracking mount, you can follow the Sun for hours, watching sunspots traverse the solar disk or monitoring the steady progress of a solar eclipse in real-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\u003eIntegrating the BSPS: Telescope and Accessory Requirements\u003c\/h3\u003e\n\u003cp\u003eThe Solar Projection Screen is designed for use with refractor telescopes equipped with a star diagonal or prism. To reduce heat stress on your optics, refractors with faster focal ratios are recommended, and stopping down the aperture on larger instruments may be necessary for prolonged viewing sessions.\u003c\/p\u003e\n\u003cp\u003eA complete setup requires a variable eyepiece projection adapter with a T-2 thread, such as the Baader OPFA, and a suitable glass or metal eyepiece like the Baader Classic Orthos. The BSPS connects to star diagonals using a standard 2\" nosepiece, creating a secure and straightforward attachment to your existing equipment.\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\u003eBeyond Basic Viewing: Public Outreach and Polar Alignment\u003c\/h3\u003e\n\u003cp\u003eThe BSPS excels in public outreach scenarios. By mounting it on a small guide scope or finder that is co-aligned with a larger, solar-filtered telescope, you can provide a live projected view for waiting guests. This keeps the line moving and shows everyone what to expect when their turn at the main eyepiece arrives.\u003c\/p\u003e\n\u003cp\u003eFor amateur astronomers, the screen serves a dual purpose as a daytime polar alignment aid. By turning off your mount's tracking, you can observe the Sun's drift across the projection surface. The direction of drift provides a clear, immediate indication of how to adjust your mount's altitude and azimuth for a more precise alignment.\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\u003eBuild Your Projector: Cardboard Kit or 3D Printed Housing\u003c\/h3\u003e\n\u003cp\u003eThe BSPS is supplied as a component kit that you assemble. It includes the specialized projection screen, a T-2 thread adapter, and a pre-cut, three-piece cardboard kit with pre-mounted adhesive strips for easy construction of the housing.\u003c\/p\u003e\n\u003cp\u003eFor a more durable and permanent solution, Baader provides free downloadable STL files. This allows you to produce a robust plastic housing and protective cover using your own 3D printer, offering a modern, customizable alternative to the included cardboard structure.\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 can I use the Baader Solar Projection Screen (BSPS) at a public outreach event?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader BSPS is perfect for outreach. You can attach it to a small guide scope or finder scope that is aligned with your main telescope (which should have its own dedicated solar filter). This allows you to show a projected image of the Sun to people waiting in line, keeping them engaged while also confirming the Sun is still centered for the person at the main eyepiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the Baader BSPS help me polar align my German Equatorial Mount during the day?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. After pointing your telescope at the Sun with the BSPS attached, simply turn off the mount's tracking. By observing the direction the Sun's image drifts across the screen, you can determine your polar alignment error. The drift direction tells you precisely how to adjust the mount in altitude and azimuth for a much more accurate alignment, a task that is typically difficult to perform in daylight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Baader Solar Projection Screen (BSPS) safe to use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader BSPS is designed with safety as the top priority. It creates a \u003cstrong\u003eclosed, enclosed system\u003c\/strong\u003e from the eyepiece to the screen. This prevents anyone from accidentally putting a hand or eye in the focused, intense light path, which is a significant risk with open projection methods.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of telescope works best with the Baader Solar Projection Screen (BSPS)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe BSPS is ideally suited for \u003cstrong\u003erefractor telescopes\u003c\/strong\u003e. To minimize heat build-up in the star diagonal and eyepiece, telescopes with faster focal ratios are recommended. For refractors with large apertures, it's advisable to use an aperture stop to reduce the heat load during long observation periods.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat other accessories do I need to use the Baader BSPS?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo use the Baader BSPS, you will need the following:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA telescope suitable for solar projection (ideally a refractor).\u003c\/li\u003e\n\u003cli\u003eA star diagonal or prism with a 2\" nosepiece connection.\u003c\/li\u003e\n\u003cli\u003eA variable eyepiece projection adapter with a T-2 thread (like the Baader OPFA).\u003c\/li\u003e\n\u003cli\u003eA glass\/metal eyepiece suitable for solar projection (like a Baader Classic Ortho).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I have to build the Baader Solar Projection Screen (BSPS) myself?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, some assembly is required. The Baader BSPS kit includes the screen, a T-2 adapter, and a pre-cut cardboard housing that you assemble. For users wanting a more permanent housing, Baader also provides STL files so you can 3D print a plastic version yourself.\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\u003e0.17\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003eT-2 (M42)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Wavelength\u003c\/td\u003e\n\u003ctd\u003eWhitelight (integral light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Filter with mount\/thread?\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired Backfocus\u003c\/td\u003e\n\u003ctd\u003e30mm\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\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_Solar_Projection_Screen_BSPS_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 Solar Projection Screen BSPS 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_Solar_Projection_Screen_BSPS_Building_Instructions.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 Solar Projection Screen BSPS Building Instructions\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":52913271636253,"sku":"BAA-2420400","price":57.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-Baader-Solar-Projection-Screen-BSPS-1_62f75401-f289-464b-b58a-29007b43ef6f.jpg?v=1789088930"},{"product_id":"baader-planetarium-solar-eclipse-viewer-astrosolar-silver-gold","title":"Baader Planetarium Solar \/ Eclipse Viewer AstroSolar® Silver\/Gold","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSafe for direct, naked-eye solar viewing\u003c\/li\u003e\n\u003cli\u003eIdeal for observing the partial phases of a solar eclipse and large sunspot groups\u003c\/li\u003e\n\u003cli\u003eAvailable as a single viewer or in packs of 10, 25 or 100 (with counter display)\u003c\/li\u003e\n\u003cli\u003eFeatures genuine Baader Planetarium AstroSolar® Silver\/Gold optical film\u003c\/li\u003e\n\u003cli\u003eDelivers a sharp, aesthetically pleasing neutral-color image of the Sun\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCritical Safety Note:\u003c\/strong\u003e Do not use with any telescope, binocular, or camera\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\u003eSolar \/ Eclipse Viewer AstroSolar® Silver\/Gold\u003c\/h2\u003e\n\u003cp\u003eThe Baader Planetarium Solar \/ Eclipse Viewer AstroSolar® Silver\/Gold provides CE-certified, safe protection for direct, naked-eye observation of the Sun. Engineered with Baader's renowned AstroSolar® film, these viewers are the definitive solution for watching the partial phases of a solar eclipse or tracking large sunspot groups, and are available individually or in packs of 10, 25 and 100 pieces for families, schools, clubs, and retailers.\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\u003eSafely Observe Partial Eclipses and Sunspots\u003c\/h3\u003e\n\u003cp\u003eThese viewers are designed for one purpose: to let you look directly at the Sun with your own eyes, safely. During a solar eclipse, you can follow the entire event as the Moon slowly covers the Sun, from first contact to the final moments before totality. Between eclipses, the viewers are sharp enough to reveal large, complex sunspots without any magnification, and the graphics printed on the viewers illustrate solar phenomena, making them an educational tool for groups.\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\u003eAstroSolar Silver\/Gold Film: The Baader Planetarium Difference\u003c\/h3\u003e\n\u003cp\u003eUnlike many eclipse glasses that use black polymer, Baader uses their own German-made AstroSolar® Silver\/Gold film. This material is a double-sided, metal-coated film that provides a perfectly sharp and clear image of the Sun, free from the double images or internal reflections common in lesser, laminated materials. The result is a comfortable and aesthetically pleasing view of the Sun in its natural, neutral color.\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\u003eAstroSolar Silver\/Gold vs. Black Polymer Films\u003c\/h3\u003e\n\u003cp\u003eThe primary advantage of Baader's AstroSolar® film lies in its construction. Black polymer films absorb solar energy, while the reflective metallic layers on AstroSolar film block harmful infrared radiation much more effectively. This reflective property keeps your eyes cooler and more comfortable during observation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImage Sharpness:\u003c\/strong\u003e The non-laminated, double-coated AstroSolar film produces a significantly sharper image compared to layered polymer films, which can create soft or ghosted images.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor Rendition:\u003c\/strong\u003e Instead of an unnatural orange or red-tinted view, the Silver\/Gold film presents the Sun in a neutral white, allowing for a more authentic visual experience.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScratch Resistance:\u003c\/strong\u003e The film is engineered to be more resistant to damage from normal handling than telescope-grade solar film, ensuring greater durability in group settings and for its intended use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCritical Safety Warning: For Direct Visual Use Only\u003c\/h3\u003e\n\u003cp\u003eThese Solar Viewers are strictly for use with your unaided eyes. Never attempt to use them in front of a telescope, a pair of binoculars, a camera lens, or any other optical device. Concentrated sunlight from an objective lens will destroy the filter instantly and cause permanent, irreversible eye damage or blindness. For safe magnified solar viewing, you must use a dedicated solar filter designed to cover the front aperture of your instrument.\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\"\u003eWhen should I use the Baader Solar Viewer during a solar eclipse?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou must use the Baader Solar Viewer for all partial phases of a solar eclipse—that is, any time any part of the Sun's bright surface (the photosphere) is visible. It is only safe to remove the viewer during the brief moments of \u003cstrong\u003e100% totality\u003c\/strong\u003e, when the Moon completely blocks the Sun. The instant the Sun begins to reappear, you must put the viewer back on.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich pack size of Baader Solar Viewers should I choose?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA single viewer is ideal for personal use. The 10-pack and 25-pack are convenient, economical ways to equip families, school classes, astronomy clubs, or workplace events with the same certified protection. The \u003cstrong\u003e100-piece pack\u003c\/strong\u003e is intended for larger organizations, outreach events, and retailers: its box converts into a counter display, making it easy to hand out or sell the viewers individually.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs it safe to use the Baader Solar Viewer with my binoculars or telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eAbsolutely not. This is extremely dangerous.\u003c\/strong\u003e The Baader Solar Viewer is only safe for direct, naked-eye use. Holding it in front of an unfiltered telescope, binocular, or camera will concentrate sunlight, instantly burn through the film, and cause permanent blindness. You must use a full-aperture solar filter that fits securely over the front of your instrument for magnified viewing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the sun look white with the Baader Solar Viewer instead of orange?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe AstroSolar® Silver\/Gold film is designed for color neutrality to show the Sun as it truly is—a white star. Many other solar viewers use dyed orange or red plastic, which can obscure subtle details and does not represent the Sun's natural color. The neutral view from the Baader viewer is preferred by many observers for its authenticity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow is the AstroSolar Silver\/Gold film different from cheap black plastic solar viewers?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe AstroSolar film is a highly engineered, double-sided metal-coated sheet that provides superior sharpness and IR rejection compared to common black polymer films. This results in a clearer, safer, and more comfortable view. Black polymer is an absorptive filter, while AstroSolar is primarily a reflective filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I reuse my Baader Solar Viewer for the next eclipse?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, provided it has been stored safely and the film is in perfect condition. Before every use, inspect the film surfaces by holding the viewer up to a bright indoor light. If you see any pinholes, scratches, or tears, discard the viewer immediately. Any damage compromises its safety.\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\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003eca. 3.7 x 2.8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Wavelength\u003c\/td\u003e\n\u003ctd\u003eWhitelight (integral light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Density\u003c\/td\u003e\n\u003ctd\u003e5.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e1 pc\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSolar \/ Eclipse Viewer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Material\u003c\/td\u003e\n\u003ctd\u003eBaader AstroSolar® Silver\/Gold Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended Use\u003c\/td\u003e\n\u003ctd\u003eNaked-Eye Visual Solar Observation Only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Certification\u003c\/td\u003e\n\u003ctd\u003eCertified for direct solar viewing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e1 Viewer\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\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eVisual solar observation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAstroSolar Film\u003c\/td\u003e\n\u003ctd\u003eAstroSolar® Silver\/Gold Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Filter with mount\/thread?\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e10 pcs\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSolar Eclipse Glasses\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Material\u003c\/td\u003e\n\u003ctd\u003eBaader AstroSolar® Silver\/Gold Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended Use\u003c\/td\u003e\n\u003ctd\u003eNaked-Eye Visual Solar Observation Only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Certification\u003c\/td\u003e\n\u003ctd\u003eCE Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e10 Viewers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.08\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e25 pcs\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSolar \/ Eclipse Viewer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Material\u003c\/td\u003e\n\u003ctd\u003eBaader AstroSolar® Silver\/Gold Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended Use\u003c\/td\u003e\n\u003ctd\u003eNaked-Eye Visual Solar Observation Only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Certification\u003c\/td\u003e\n\u003ctd\u003eCE Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e25 Viewers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eVisual solar observation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAstroSolar Film\u003c\/td\u003e\n\u003ctd\u003eAstroSolar® Silver\/Gold Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Filter with mount\/thread?\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e100 pcs with counter display\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSolar \/ Eclipse Viewer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Material\u003c\/td\u003e\n\u003ctd\u003eBaader AstroSolar® Silver\/Gold Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended Use\u003c\/td\u003e\n\u003ctd\u003eNaked-Eye Visual Solar Observation Only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Certification\u003c\/td\u003e\n\u003ctd\u003eCE Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e100 Viewers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackaging\u003c\/td\u003e\n\u003ctd\u003eBox converts into a counter display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.70\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eVisual solar observation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAstroSolar Film\u003c\/td\u003e\n\u003ctd\u003eAstroSolar® Silver\/Gold Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Filter with mount\/thread?\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e10 pcs\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\"\u003eSolar \/ Eclipse Viewer AstroSolar® Silver\/Gold\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 10\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\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":"1 pc","offer_id":52913273405725,"sku":"BAA-2420001","price":5.0,"currency_code":"CAD","in_stock":true},{"title":"10 pcs","offer_id":52913273438493,"sku":"BAA-2420010","price":47.0,"currency_code":"CAD","in_stock":true},{"title":"25 pcs","offer_id":52913273471261,"sku":"BAA-2420025","price":110.0,"currency_code":"CAD","in_stock":true},{"title":"100 pcs with counter display","offer_id":52913273504029,"sku":"BAA-2420101","price":408.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-Solar-Eclipse-Viewer-AstroSolar-Silver-Gold-1_a5f6935e-ba45-4bcc-b930-c94a0049e1a1.jpg?v=1789088964"},{"product_id":"baader-planetarium-solar-diaphragm-13mm-113mm-stepless-adjustable","title":"Baader Planetarium Solar Diaphragm 13mm - 113mm, stepless adjustable","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSteplessly Adjustable Aperture: 13mm to 113mm\u003c\/li\u003e\n\u003cli\u003eIdeal for Optimizing Solar Views in Refractors\u003c\/li\u003e\n\u003cli\u003eDIY Mounting Pattern: Four M3 threads\u003c\/li\u003e\n\u003cli\u003eStandard Pitch Circle: 60mm radius for easy integration\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\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\u003eSolar Diaphragm 13mm - 113mm, stepless adjustable\u003c\/h2\u003e\n      \u003cp\u003eThe Solar Diaphragm provides stepless aperture control from 13mm up to 113mm, making it an essential component for custom solar observing setups. For mounting, it features a pattern of four M3 threads on a 60mm pitch circle radius, allowing for secure integration into DIY filter holders and telescope adapters.\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\u003eStepless Aperture Control from 13mm to 113mm\u003c\/h3\u003e\n      \u003cp\u003eThis variable iris allows you to precisely dial in the optimal aperture for your observing conditions, ranging continuously from 13mm to 113mm. By stopping down a larger refractor, you can significantly reduce the effects of atmospheric seeing, often resulting in a steadier and sharper image of sunspots and granulation. The ability to fine-tune the aperture without fixed steps is critical for finding the perfect balance between image brightness and stability on any given day.\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\u003eCustom Mounting with 4x M3 Threads on a 60mm Circle\u003c\/h3\u003e\n      \u003cp\u003eDesigned for custom applications, the diaphragm includes four pre-drilled M3 threads on the telescope side. These mounting points are arranged on a 60mm pitch circle radius, providing a standardized and secure pattern for attaching the iris to a custom-built filter cell, telescope adapter plate, or other DIY holder. This makes it a versatile component for amateur telescope makers and solar observers building specialized equipment.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\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 13-113mm Solar Diaphragm a complete solar filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003e\u003cstrong\u003eAbsolutely not.\u003c\/strong\u003e This is a mechanical iris diaphragm only. It reduces the amount of visible light but does \u003cstrong\u003eNOT\u003c\/strong\u003e block harmful invisible radiation (UV and IR). You must use this device in conjunction with a certified, full-aperture solar filter designed to safely view the sun. Failure to do so will result in permanent eye damage and equipment destruction.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary use for the Solar Diaphragm?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eIts primary use is to reduce the effective aperture of a telescope, typically a refractor, for white-light solar observing. This helps to sharpen the image and increase contrast by mitigating the effects of atmospheric turbulence (seeing). It allows you to use the \"sweet spot\" of your telescope's objective lens.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I mount the Solar Diaphragm to my telescope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe diaphragm is intended for custom, do-it-yourself installations. It has \u003cstrong\u003efour M3 threads\u003c\/strong\u003e on a \u003cstrong\u003e60mm pitch circle radius\u003c\/strong\u003e, which you can use to bolt it onto a custom-made filter holder, an adapter plate, or another mounting solution that fits your specific telescope.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Solar Diaphragm on my 8-inch SCT?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWhile it could be mechanically adapted, this diaphragm is primarily designed for refractors. For Schmidt-Cassegrains and other reflecting telescopes, an off-axis aperture mask is typically preferred to avoid exacerbating thermal issues and image degradation caused by the central obstruction.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this diaphragm help me see solar prominences on my 100mm refractor?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo. This is a mechanical device for optimizing white-light solar observing (sunspots, granulation). Viewing solar prominences requires a specialized, narrow-bandpass Hydrogen-alpha (H-alpha) filter system, which operates on entirely different principles.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is a stepless adjustment better than fixed aperture masks?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAtmospheric seeing conditions change constantly. A stepless diaphragm allows you to fine-tune the aperture in real-time to find the exact diameter that provides the steadiest view, a capability that fixed-size masks cannot offer. You can adjust from \u003cstrong\u003e13mm to 113mm\u003c\/strong\u003e to perfectly match the conditions of the moment.\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\u003eAperture Range\u003c\/td\u003e\n\u003ctd\u003e13mm - 113mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment Type\u003c\/td\u003e\n\u003ctd\u003eSteplessly Variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Threads\u003c\/td\u003e\n\u003ctd\u003e4x M3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Pattern\u003c\/td\u003e\n\u003ctd\u003e60mm Pitch Circle Radius\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.26\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Filter with mount\/thread?\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cp\u003eThis product is a single component and does not include additional accessories.\u003c\/p\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cp\u003ePlease contact us for warranty information on this product.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":52913274388765,"sku":"BAA-2459300","price":533.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-Solar-Diaphragm-13mm-113mm-stepless-adjustable-1_297f3c4a-7eaf-46b4-be2e-a0855861e80a.jpg?v=1789088986"},{"product_id":"baader-planetarium-solar-shade-with-t-2-drilled-hole","title":"Baader Planetarium Solar Shade with T-2 Drilled Hole","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eT-2 Thread-Through Design\u003c\/li\u003e\n\u003cli\u003eInstalls Between Any T-2 System Components\u003c\/li\u003e\n\u003cli\u003eShields Equipment from Direct Solar Radiation\u003c\/li\u003e\n\u003cli\u003eReduces Internal Reflections and Improves Contrast\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\u003eSolar Shade with T-2 Drilled Hole\u003c\/h2\u003e\n\u003cp\u003eThe Solar Shade with T-2 drilled hole is a critical accessory for any solar imaging setup, designed to install directly into your optical train. It physically blocks direct sunlight from hitting your camera body, filter wheel, or other accessories, preventing dangerous heat buildup and improving image contrast by cutting down on stray light.\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\u003eInline T-2 Mounting for Universal Integration\u003c\/h3\u003e\n\u003cp\u003eThis shield's primary function is enabled by its simple and effective mounting system. It features a central T-2 threaded hole, allowing it to be clamped between any two components in your imaging train that use the standard T-2 (M42x0.75) thread, such as a camera nosepiece and a Barlow lens, or a T-adapter and a filter drawer.\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\u003eShielding Equipment from Solar Heat and Stray Light\u003c\/h3\u003e\n\u003cp\u003eDuring extended solar imaging sessions, direct sunlight can cause significant thermal issues for your equipment, potentially damaging sensitive electronics or causing thermal currents that degrade seeing. By casting a shadow over your gear, the Solar Shade keeps temperatures stable. This also darkens the area around the optical path, preventing off-axis light from entering your system and reducing the signal-to-noise ratio of your final image.\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 Solar Shade with T-2 drilled hole?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts main purpose is to protect your astronomy equipment from the Sun's heat during solar observation or imaging. It mounts in your optical train and casts a shadow over your camera and other accessories, preventing them from overheating and reducing stray light for better image contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the Solar Shade in my imaging train?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou install it by \"clamping\" it between any two accessories that use T-2 threads. For example, you would unscrew your camera's 1.25\" nosepiece, slide the Solar Shade over the nosepiece's male threads, and then screw the nosepiece back into the camera. The shade is held securely in place by the tension of the two threaded components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Solar Shade with T-2 drilled hole replace my main solar filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eAbsolutely not.\u003c\/strong\u003e This is a safety-critical point. The Solar Shade is an equipment protection device, not an optical filter. You must \u003cstrong\u003ealways\u003c\/strong\u003e use a certified, full-aperture solar filter on the front of your telescope to safely observe or image the Sun. The shade only protects the gear behind the telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Solar Shade with a filter wheel or off-axis guider?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. As long as your accessories connect via T-2 threads, the shade can be placed anywhere in the chain. Placing it in front of a filter wheel is a common application, as it helps keep the wheel and the filters inside at a stable temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Solar Shade help when imaging the Sun with a dedicated H-alpha telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eEven with a dedicated solar telescope like a Lunt or Coronado, the camera body itself is still exposed to direct sunlight. The Solar Shade casts a shadow on the camera, preventing the sensor temperature from rising. This is crucial for reducing thermal noise during H-alpha imaging, leading to cleaner images of prominences and surface detail on the Sun.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this shade help with imaging planets like Venus or Mercury when they are close to the Sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it can be very helpful. When imaging planets during the day or near the Sun, stray light from the bright sky and the Sun itself can wash out the planet's faint details. The shade helps by blocking this off-axis light from hitting your camera or entering the optical path from an angle, improving contrast significantly.\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\u003e0.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003eT-2 (M42)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eUse as shade (glare protection) for visual observation \/ imaging through eyepiece or camera\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Filter with mount\/thread?\u003c\/td\u003e\n\u003ctd\u003eYes\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\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":52913276944669,"sku":"BAA-2959279","price":56.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-Solar-Shade-with-T-2-drilled-hole-1_d2434ede-e1cc-4d08-a29d-23c3652a2135.jpg?v=1789088995"},{"product_id":"baader-planetarium-solar-shade-with-2-inch-drilled-hole","title":"Baader Planetarium Solar Shade with 2\" drilled hole","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eBlocks stray sunlight to improve contrast\u003c\/li\u003e\n\u003cli\u003eReduces heat buildup around the eyepiece\u003c\/li\u003e\n\u003cli\u003eInstalls between any 2-inch threaded accessories\u003c\/li\u003e\n\u003cli\u003eFeatures a 2-inch center hole for eyepieces and cameras\u003c\/li\u003e\n\u003cli\u003eImproves comfort during extended solar observation sessions\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\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\u003eSolar Shade with 2\" drilled hole\u003c\/h2\u003e\n      \u003cp\u003eThis Solar Shade features a 2-inch drilled hole designed to fit standard 2-inch accessories, blocking stray sunlight from reaching your eye or camera. It clamps securely into any 2-inch threaded connection, providing a stable and effective shield that dramatically improves contrast and comfort during solar observation.\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\u003eBlock Stray Light for High-Contrast Solar Views\u003c\/h3\u003e\n      \u003cp\u003eWhen observing the Sun, any stray light entering the optical path or reflecting off surfaces near the eyepiece can wash out faint details. This shield creates a large shadow around your observing equipment, preventing glare from reducing the contrast of delicate solar features like prominences, filaments, and surface granulation.\u003c\/p\u003e\n      \u003cp\u003eBy isolating your eye from distracting ambient light, your pupil remains better adapted for the eyepiece view, allowing you to discern subtle changes in the Sun's chromosphere or photosphere. It also significantly reduces heat buildup on the back of your telescope and accessories, making long observing sessions more comfortable.\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\u003eInstalls Securely in Any 2-Inch Accessory Train\u003c\/h3\u003e\n      \u003cp\u003eUnlike a simple cloth hood that can be caught by the wind, this rigid Solar Shade integrates directly into your 2-inch accessory train. It is designed to be clamped between any two components with standard 2-inch filter threads, such as between your diagonal and eyepiece, or a camera nosepiece and a Barlow lens.\u003c\/p\u003e\n      \u003cp\u003eThis threaded installation ensures the shield remains perfectly centered and securely attached, with no risk of it slipping or shifting during observation. The result is a stable, reliable barrier against stray light that becomes a seamless part of your solar imaging or visual setup.\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\"\u003eHow does this 2-inch Solar Shade improve solar viewing?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe \u003cstrong\u003eSolar Shade\u003c\/strong\u003e improves solar viewing by blocking stray sunlight that causes glare and reduces image contrast. This makes it easier to see faint details like solar prominences, filaments, and granulation. It also increases comfort by shielding the observer and equipment from direct heat.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the Solar Shade in my setup?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYou install the shade by sandwiching it between any two accessories in your 2-inch optical train that have compatible threads. For example, you can thread it onto the barrel of your 2-inch eyepiece and then insert the eyepiece into your diagonal, or place it between a camera nosepiece and a focal reducer.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs this Solar Shade compatible with a Herschel wedge for white-light solar viewing?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. The Solar Shade is an excellent accessory for use with a 2-inch Herschel wedge. It installs just like any other 2-inch accessory and is highly effective at blocking the bright ambient light, which helps in discerning the fine details of sunspots and faculae in the photosphere.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Solar Shade with my dedicated H-alpha telescope like a Lunt or Coronado?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAbsolutely. This shade is ideal for dedicated H-alpha solar telescopes. By blocking stray light, it significantly enhances the contrast of faint prominences and delicate surface details in the chromosphere, which are the primary targets for H-alpha observers.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main benefit of this Solar Shade over using a simple cloth observing hood?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe main benefit is stability. This rigid shade clamps securely within your 2-inch accessory train and will not move or flap in the wind like a cloth hood. This provides a more reliable and consistent blockage of stray light without the risk of the covering shifting or falling off during an observation.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Solar Shade for anything other than solar observing?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWhile designed for solar use, it can be helpful for any daytime terrestrial viewing to block glare. However, it is not intended for nighttime observing, as it would obstruct your view of the surrounding sky and could be a hazard in the dark.\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\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eAny 2-inch threaded accessory train\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCenter Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e2 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Use\u003c\/td\u003e\n\u003ctd\u003eSolar Observation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e2\" (50.8 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eUse as shade (glare protection) for visual observation \/ imaging through eyepiece or camera\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Filter with mount\/thread?\u003c\/td\u003e\n\u003ctd\u003eYes\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  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\n\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":52913277010205,"sku":"BAA-2959280","price":57.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-Solar-Shade-with-2-drilled-hole-1_c82c9094-f664-4456-b65d-cdbbbe4ff510.jpg?v=1789089003"},{"product_id":"baader-planetarium-solar-shade-with-m68-drilled-hole","title":"Baader Planetarium Solar Shade with M68 drilled hole","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProtects Imaging Equipment from Solar Heating\u003c\/li\u003e\n\u003cli\u003eClamps Securely Between Any M68 Threads\u003c\/li\u003e\n\u003cli\u003eReduces Tube Currents and Thermal Instability\u003c\/li\u003e\n\u003cli\u003eLightweight and Rigid 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\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\u003eSolar Shade with M68 drilled hole\u003c\/h2\u003e\n      \u003cp\u003eThe Baader Solar Shade is a purpose-built heat shield that integrates directly into any M68 threaded optical train. It physically blocks direct sunlight from striking your focuser, camera body, and other accessories during solar observation or imaging. This passive cooling is essential for preventing heat buildup that can cause image-degrading tube currents and protect sensitive electronics from damage.\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\u003eM68 Thread-In Heat Shield for Solar Imaging\u003c\/h3\u003e\n      \u003cp\u003eThis shield is engineered to be clamped between any two components with standard M68 x 1 threads, such as between a high-end focuser and a camera adapter or filter wheel. By positioning it within the optical path, it casts a protective shadow over the rear of your telescope and imaging equipment, which is critical during long solar imaging sessions where sustained sun exposure can heat equipment to damaging levels.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003ePassive Thermal Control:\u003c\/strong\u003e Reduces localized heat on your equipment, minimizing thermal tube currents and protecting sensitive camera electronics without requiring power.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eSecure M68 Integration:\u003c\/strong\u003e Installs rigidly between any M68-threaded components, ensuring a secure, non-flexing connection that maintains optical alignment.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eMaintains System Balance:\u003c\/strong\u003e Its lightweight design adds minimal mass and leverage to the focuser, preserving the balance of your telescope setup.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eEssential Solar Accessory:\u003c\/strong\u003e While not an optical filter, it is a critical part of a safe and stable solar imaging setup by managing the thermal load on your gear.\u003c\/li\u003e\n      \u003c\/ul\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 Baader M68 Solar Shade install in an imaging train?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Solar Shade installs by being \"sandwiched\" or clamped between any two accessories that use the M68 x 1 thread standard. You simply unscrew your existing M68 connection, place the shade between the two parts, and thread them back together for a secure fit.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of this M68 Solar Shade?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eIts main function is to prevent direct sunlight from heating the body of your telescope, focuser, and camera. This passive cooling helps to prevent localized heat currents (tube seeing) that degrade image sharpness and protects sensitive electronics from potential damage due to overheating.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the M68 Solar Shade with a Baader Steeltrack focuser on a refractor for solar imaging?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, this is an ideal application. Many Baader Steeltrack focusers and compatible accessories utilize the M68 thread system, allowing the Solar Shade to be integrated seamlessly to protect your high-end focuser and camera during dedicated solar observation.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this M68 Solar Shade protect my camera from overheating during a solar eclipse?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eIt will protect the \u003cstrong\u003ebody\u003c\/strong\u003e of the camera and other external equipment from direct solar radiation, which is crucial during the long hours leading up to and after totality. It does not cool the sensor itself, but by keeping the camera body cooler, it helps the camera's internal cooling system work more effectively.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs this M68 Solar Shade a substitute for a full-aperture solar filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003e\u003cstrong\u003eAbsolutely not.\u003c\/strong\u003e This is a heat shield for your equipment, not an optical filter for your telescope. You must always use a certified, full-aperture solar filter, a Herschel wedge, or a dedicated H-alpha scope on the front of your telescope to safely observe or image the sun. This shade is an accessory used \u003cstrong\u003ein addition\u003c\/strong\u003e to your primary solar filter.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat components are compatible with the M68 thread on this Solar Shade?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe M68 thread is a common standard on many high-end astronomy components. This includes focusers from Baader, Feather Touch, and others, as well as various filter wheels, off-axis guiders, and camera adapters designed for full-frame sensors and large optical systems.\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\u003e0.21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003eM68 (68mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eUse as shade (glare protection) for visual observation \/ imaging through eyepiece or camera\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Filter with mount\/thread?\u003c\/td\u003e\n\u003ctd\u003eYes\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  \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":52913277108509,"sku":"BAA-2959281","price":59.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-Solar-Shade-with-M68-drilled-hole-1_54341197-1a60-483e-be1c-0263fb478c99.jpg?v=1789089013"},{"product_id":"baader-planetarium-tz-3s-telecentric-system-t-2-for-sundancer-ii-and-more","title":"Baader Planetarium TZ-3S Telecentric System T-2 for SunDancer II and more","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e3x Achromatic Telecentric System\u003c\/li\u003e\n\u003cli\u003eDelivers a Parallel Light Beam for H-alpha Filters\u003c\/li\u003e\n\u003cli\u003eIlluminates a 27.5mm Image Circle\u003c\/li\u003e\n\u003cli\u003e96mm Working Distance from T-2 Thread Base\u003c\/li\u003e\n\u003cli\u003eDual 1.25\" and 2\" Nosepiece\u003c\/li\u003e\n\u003cli\u003eT-2 Thread for Secure Camera Connection\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\u003eTZ-3S Telecentric System T-2 for SunDancer II and more\u003c\/h2\u003e\n\u003cp\u003eThe Baader TZ-3S is a 3x achromatic telecentric system engineered to deliver a perfectly parallel beam of light, a mandatory requirement for narrow-band H-alpha solar filters which must operate at a focal ratio of f\/30. This standalone version, identified by its gold anodized label, illuminates a 27.5mm image circle over a forgiving 96 mm working distance. With its versatile dual 1.25\"\/2\" nosepiece and secure T-2 camera-side thread, the TZ-3S serves as a high-contrast replacement for a standard Barlow lens for both critical solar and planetary imaging.\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 3x Telecentric Advantage: Parallel Light and Stable Magnification\u003c\/h3\u003e\n\u003cp\u003eUnlike a Barlow lens, which creates a diverging light cone and whose magnification changes with distance, a telecentric system produces parallel light rays. This core design principle ensures the magnification factor of the TZ-3S remains a constant 3x, regardless of where your camera or eyepiece is placed relative to its 96 mm optimal working distance. The result is a stable image scale and superior image quality, free from the optical compromises inherent in extending a Barlow's magnification with extension tubes.\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\u003eAchieving the Mandatory f\/30 for H-alpha Etalons\u003c\/h3\u003e\n\u003cp\u003eFor sub-Angstrom H-alpha filters like the Baader SunDancer II, a telecentric system is not an optional accessory—it is an essential prerequisite. These filters rely on an internal etalon that only performs to specification when fed a perfectly parallel beam of light at f\/30 or slower. Simply using a Barlow to increase a telescope's focal ratio to f\/30 does not create a parallel beam and will severely degrade the filter's contrast. The TZ-3S correctly converts a standard f\/10 telescope into an f\/30 instrument, ensuring the etalon performs at its maximum theoretical contrast.\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\u003eAchromatic Imaging: Illuminating a 27.5mm Image Circle\u003c\/h3\u003e\n\u003cp\u003eWhile designed for H-alpha, the TZ-3S is a fully achromatic system, corrected across the visible spectrum. This makes it a powerful tool for high-magnification lunar and planetary imaging, delivering higher contrast than simple Barlows or eyepiece projection. The system illuminates a 27.5mm image circle, making it an ideal match for the smaller sensors found in modern, high-speed planetary cameras that thrive at the high magnifications needed to resolve fine detail on Jupiter's cloud bands or the Cassini Division in Saturn's rings.\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\u003eMechanical Interface: Dual 1.25\"\/2\" Nosepiece and T-2 Threading\u003c\/h3\u003e\n\u003cp\u003eThe TZ-3S is built for secure, flex-free integration into any imaging train. On the telescope side, a dual-purpose nosepiece fits both 1.25\" and 2\" focusers and features safety kerfs instead of a simple groove, preventing tilts and ensuring a solid lock. On the camera side, a standard T-2 (M42x0.75) male thread provides a rigid, direct connection to cameras, filter wheels, and T-2 eyepiece holders, eliminating the potential for sag that can occur with simple thumbscrew connections.\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\u003eTZ-3S vs. TZ-4S: Matching f\/10 vs. f\/7.5 Telescopes\u003c\/h3\u003e\n\u003cp\u003eChoosing the correct telecentric depends on your telescope's native focal ratio. While the TZ-4S offers a larger 36mm clear aperture, its primary purpose is different.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTZ-3S (Gold Label):\u003c\/strong\u003e This 3x telecentric is optimized for telescopes with a focal ratio of f\/10, converting them to the target f\/30 for H-alpha filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTZ-4S (Violet Label):\u003c\/strong\u003e The 4x telecentric is designed for faster telescopes around f\/7.5, providing the necessary magnification to reach the same f\/30 target.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis standalone TZ-3S does not include the 2nm blocking filter required for the SunDancer II system; that component is only integrated into the red-ring version sold with the filter itself.\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 main difference between the Baader TZ-3S Telecentric and a standard 3x Barlow lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA Barlow lens creates a diverging light cone, and its magnification changes as you alter the distance to the camera sensor. The \u003cstrong\u003eTZ-3S Telecentric System\u003c\/strong\u003e produces a parallel beam of light, which means its \u003cstrong\u003e3x magnification factor and image quality remain constant\u003c\/strong\u003e regardless of the working distance. This parallel beam is also a mandatory requirement for the proper function of narrow-band H-alpha solar filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the TZ-3S Telecentric mandatory for a filter like the Baader SunDancer II?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe high-precision etalon inside a sub-Angstrom H-alpha filter requires a perfectly parallel, slow focal ratio (typically \u003cstrong\u003ef\/30\u003c\/strong\u003e) light beam to achieve its rated contrast and bandpass. Using a standard Barlow lens to reach f\/30 does not create a parallel beam and will significantly degrade the filter's performance. The TZ-3S is specifically designed to produce this parallel f\/30 beam, making it essential for critical solar observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the standalone TZ-3S for planetary imaging with my f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The TZ-3S is an excellent choice for this application. Its achromatic design is corrected for the entire visible spectrum, and it provides higher contrast than most Barlows. On an f\/10 Schmidt-Cassegrain Telescope (SCT), it creates an f\/30 imaging system, which is ideal for capturing fine details on planets like Jupiter and Saturn with modern high-frame-rate cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the TZ-3S work with my camera that has a sensor larger than 27.5mm?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe TZ-3S is optically designed to fully illuminate an image circle of \u003cstrong\u003e27.5mm\u003c\/strong\u003e in diameter. While you can use it with a camera that has a larger sensor (like APS-C), you will experience significant vignetting (darkening) at the corners and edges of the frame. It is best matched with sensors that fit within this image circle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach the TZ-3S to my telescope and camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe TZ-3S is very versatile. On the telescope side, it has a \u003cstrong\u003edual 1.25\" and 2\" nosepiece\u003c\/strong\u003e that slides directly into your focuser. On the camera side, it features a standard \u003cstrong\u003eT-2 (M42x0.75) male thread\u003c\/strong\u003e for a secure, threaded connection to your imaging camera, filter wheel, or a T-2 eyepiece clamp.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have an f\/7.5 refractor. Should I use the TZ-3S or the TZ-4S for my H-alpha filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor an f\/7.5 telescope, the \u003cstrong\u003eTZ-4S (4x Telecentric) is the correct choice\u003c\/strong\u003e. To reach the required f\/30 focal ratio for an H-alpha filter, you need a 4x magnification factor (7.5 x 4 = 30). The TZ-3S would only bring your system to f\/22.5, which is too fast for the etalon to perform optimally.\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\u003e0.17\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackfocus\u003c\/td\u003e\n\u003ctd\u003e96 mm distance to T-2 threaded base\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size (in)\u003c\/td\u003e\n\u003ctd\u003e1¼\", 2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eTelecentric System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e27 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003efor H-alpha observation or as Barlow lens, with frame for the block filter of the Baader SunDancer II H-alpha filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal length extension\u003c\/td\u003e\n\u003ctd\u003e3x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eø 1¼\" (31.75 mm), ø 2\" (50.8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Field\u003c\/td\u003e\n\u003ctd\u003e27 mm\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\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_SolarSpectrum_H-alpha_Filter_Telecentric_Systems_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 SolarSpectrum H-alpha Filter Telecentric Systems 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_SunDancer_II_H-alpha_Filter_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 SunDancer II H-alpha Filter 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_SunDancer_II_3x_Telecentric_TZ-3S_Technical_Drawing.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 SunDancer II 3x Telecentric TZ-3S Technical Drawing\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":52913278681373,"sku":"BAA-1363070","price":532.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-TZ-3S-Telecentric-System-T-2-for-SunDancer-II-and-more-1_9dc28c07-1d7d-4a6d-b473-b36a5ffb442c.jpg?v=1789089026"},{"product_id":"baader-planetarium-tz-4s-telecentric-system-t-2-for-sundancer-ii-and-more","title":"Baader Planetarium TZ-4S Telecentric System T-2 for SunDancer II and more","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCreates a parallel beam of light required for H-alpha solar filters\u003c\/li\u003e\n\u003cli\u003eHigher magnification factor for using solar filters on faster telescopes\u003c\/li\u003e\n\u003cli\u003eMaintains a constant magnification factor regardless of working distance\u003c\/li\u003e\n\u003cli\u003eConnects via a standard T-2 thread and a dual 1.25\"\/2\" nosepiece\u003c\/li\u003e\n\u003cli\u003ePreserves the native eye relief of visual eyepieces\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\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\u003eTZ-4S Telecentric System T-2 for SunDancer II and more\u003c\/h2\u003e\n      \u003cp\u003eThe Baader TZ-4S Telecentric System is engineered to produce a perfectly parallel beam of light, an essential requirement for the etalon in any high-resolution H-alpha solar filter like the SunDancer II. It connects to your camera or eyepiece holder via a rigid T-2 thread and fits any telescope focuser with its dual 1.25\" and 2\" nosepiece.\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\u003eA Parallel Light Path for Uncompromised H-alpha Contrast\u003c\/h3\u003e\n      \u003cp\u003eFor H-alpha filters with a narrow half-bandwidth, a telecentric optical system is mandatory. Standard Barlow lenses or focal extenders create a converging light cone, which degrades the filter's performance and significantly reduces contrast. The TZ-4S ensures the light rays are perfectly parallel across the entire field before they enter the etalon, allowing the filter to operate at its maximum theoretical contrast and reveal the finest solar details.\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\u003eHigh-Magnification Viewing Without Barlow Lens Drawbacks\u003c\/h3\u003e\n      \u003cp\u003eBeyond solar applications, the TZ-4S serves as a superior alternative to a Barlow lens for high-magnification visual observation of the planets. Unlike a Barlow, whose magnification changes with distance, a telecentric system maintains its specified magnification factor and optical quality regardless of the spacing to the eyepiece or camera. This design also preserves the original eye relief of your eyepiece, ensuring comfortable views even at high power.\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\u003eAdapting the SunDancer II for Shorter Focal Ratio Telescopes\u003c\/h3\u003e\n      \u003cp\u003eThe TZ-4S is the key to using the Baader SunDancer II H-alpha filter on telescopes with shorter native focal ratios, such as f\/7 or f\/8 apochromatic refractors. It provides the necessary magnification to convert the telescope's light cone into the slow, parallel beam required by the SunDancer's etalon. This allows owners of faster instruments to achieve the same stunning solar views as those with longer-focal-length telescopes.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCritical User Note:\u003c\/strong\u003e To use the TZ-4S with a SunDancer II filter, you must transfer the 2nm blocking filter from the original 3x telecentric (TZ-3S) supplied with your SunDancer. The blocking filter is not included with the TZ-4S and is not available for separate purchase.\u003c\/li\u003e\n      \u003c\/ul\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\u003eSecure Connections with a 1.25\"\/2\" Nosepiece and T-2 Thread\u003c\/h3\u003e\n      \u003cp\u003eThe TZ-4S is built for a secure, tilt-proof fit in any imaging train. The telescope side features a dual-format nosepiece that fits both 1.25\" and 2\" focusers, machined with safety kerfs for a secure grip without marring the barrel. The camera side features a standard T-2 (M42x0.75) male thread, providing a rigid, direct connection to cameras, filter wheels, or T-2 eyepiece clamps, eliminating the potential for flexure that can plague slip-fit adapters.\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\u003eTZ-4S vs. TZ-3S: Choosing the Right Telecentric Magnification\u003c\/h3\u003e\n      \u003cp\u003eThe primary difference between the TZ-4S and the TZ-3S included with the SunDancer II filter lies in their intended telescope pairing. Each is designed to produce the optimal final focal ratio for the H-alpha etalon.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eBaader TZ-3S (Standard):\u003c\/strong\u003e This telecentric is optimized for telescopes with longer native focal ratios, such as f\/10 Schmidt-Cassegrains. It provides the correct magnification to condition the beam for the SunDancer II etalon.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eBaader TZ-4S (This Product):\u003c\/strong\u003e With its higher magnification, the TZ-4S is designed for telescopes with faster native focal ratios, such as f\/7.5 refractors. It allows these instruments to achieve the same ideal parallel beam, making it the essential upgrade for wide-field telescope owners wanting to perform high-resolution solar imaging.\u003c\/li\u003e\n      \u003c\/ul\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\"\u003eWhy is the Baader TZ-4S Telecentric System necessary for H-alpha solar filters?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNarrow-band H-alpha filters, like the Baader SunDancer II, contain an etalon that only performs correctly when fed a \u003cstrong\u003eperfectly parallel beam of light\u003c\/strong\u003e. A standard Barlow lens or the telescope's native focal ratio creates a converging cone of light, which significantly degrades the filter's contrast. The TZ-4S is an optical conditioner that creates this necessary parallel beam, unlocking the filter's full performance.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow is the TZ-4S different from a standard Barlow lens for viewing Jupiter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe TZ-4S offers two main advantages for planetary viewing. First, its magnification factor is \u003cstrong\u003econstant and independent of distance\u003c\/strong\u003e, unlike a Barlow which changes magnification as you move the eyepiece. Second, the TZ-4S \u003cstrong\u003epreserves the eyepiece's native eye relief\u003c\/strong\u003e, making high-power viewing much more comfortable, especially for eyeglass wearers.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the TZ-4S with my SunDancer II H-alpha filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, but with a critical requirement. You \u003cstrong\u003emust carefully remove the 2nm H-alpha blocking filter\u003c\/strong\u003e from the front of the TZ-3S telecentric that came with your SunDancer II and install it into the TZ-4S. The TZ-4S does not include this filter, and it cannot be purchased separately. This component is essential for the safe and correct operation of the H-alpha system.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of telescope is the TZ-4S designed for when used with the SunDancer II?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe TZ-4S is designed for telescopes with \u003cstrong\u003eshorter native focal ratios, typically in the f\/7 to f\/8 range\u003c\/strong\u003e, such as apochromatic refractors. The standard TZ-3S is better suited for longer focal ratio instruments like f\/10 Schmidt-Cassegrains. The TZ-4S provides the higher magnification needed for faster scopes to achieve the ideal slow focal ratio for the etalon.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the connection options on the TZ-4S Telecentric System?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe TZ-4S offers flexible and secure connections:\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eTelescope Side:\u003c\/strong\u003e A dual-purpose nosepiece that fits into both \u003cstrong\u003e1.25\" and 2\" focusers\u003c\/strong\u003e.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eCamera\/Eyepiece Side:\u003c\/strong\u003e A standard male \u003cstrong\u003eT-2 (M42x0.75) thread\u003c\/strong\u003e for a rigid, threaded connection to your camera or other T-2 accessories.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill the TZ-4S change the eye relief of my eyepieces?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo. A key benefit of the telecentric design is that it \u003cstrong\u003epreserves the original eye relief\u003c\/strong\u003e of any eyepiece you use with it. This is a significant comfort advantage over some other magnification methods, especially during long planetary observing sessions.\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\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e36 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003efor H-alpha observation with SolarSpectrum filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal length extension\u003c\/td\u003e\n\u003ctd\u003e4x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eø 1¼\" (31.75 mm), ø 2\" (50.8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Field\u003c\/td\u003e\n\u003ctd\u003e36 mm\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  \u003c\/ul\u003e\n\u003c\/li\u003e\n\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_SolarSpectrum_H-alpha_Filter_Telecentric_Systems_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 SolarSpectrum H-alpha Filter Telecentric Systems 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_SunDancer_II_Blocking_Filter_TZ-3S_to_TZ-4S_Guide.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 SunDancer II Blocking Filter TZ-3S to TZ-4S Guide\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_SunDancer_II_H-alpha_Filter_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 SunDancer II H-alpha Filter 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_SunDancer_II_Telecentric_System_TZ-4S_Technical_Drawing.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 SunDancer II Telecentric System TZ-4S Technical Drawing\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\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 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