{"id":13588,"date":"2026-02-22T16:30:49","date_gmt":"2026-02-22T15:30:49","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=13588"},"modified":"2026-02-22T17:03:32","modified_gmt":"2026-02-22T16:03:32","slug":"ls40tha-b500rp","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/ls40tha-b500rp\/","title":{"rendered":"LS40THa\/B500R&P"},"content":{"rendered":"

H-alpha 40 mm solar telescope - B500 blocking filter & rack & pinion eyepiece holder<\/h2>\n

This 40 mm H-alpha solar telescope<\/strong> is specially designed for observing the solar chromosphere in the H-alpha line (656.28 nm). Compact, powerful and easy to use, it lets you safely explore the Sun's dynamic phenomena: protuberances, filaments, sunspots and fine surface details.<\/p>\n

Equipped with a B500 blocking filter<\/strong> and a rack & pinion eyepiece holder<\/strong>, It offers stable, precise focusing, ideal for fully exploiting the optical potential of visual observation.<\/p>\n

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Dedicated, secure H-alpha observation<\/h3>\n

Optimized for H-alpha solar observation, this system reveals the active structures of the chromosphere, invisible in white light.<\/p>\n

    \n
  • Spectacular protuberances at the edge of the disc<\/li>\n
  • Filaments and solar flares<\/li>\n
  • High-contrast surface details<\/li>\n
  • Monitoring the evolution of solar activity<\/li>\n<\/ul>\n
    \n

    B500 blocking filter<\/h3>\n

    Visit blocking filter B500<\/strong> guarantees image safety and spectral purity. Compact and lightweight, it is perfectly suited to visual use with 1.25\u2033 format eyepieces.<\/p>\n

      \n
    • Transmission optimized for H-alpha band<\/li>\n
    • Format compatible with standard 1.25\u2033 accessories<\/li>\n
    • Designed for safe solar observation<\/li>\n<\/ul>\n
      \n

      Rack & Pinion eyepiece holder - stability and precision<\/h3>\n

      Visit rack-and-pinion eyepiece holder<\/strong> ensures smooth, rigid, slip-free focusing. Compared to a helical focuser, it offers greater mechanical stability, especially with slightly heavier accessories.<\/p>\n

        \n
      • Precise, controlled focus<\/li>\n
      • Excellent mechanical stability<\/li>\n
      • Suitable for 1.25\u2033 accessories<\/li>\n<\/ul>\n
        \n

        Accessories included<\/h3>\n
          \n
        • TeleVue Sol Searcher<\/strong> for fast, safe solar pointing<\/li>\n
        • Dovetail 4\u2033<\/strong> for mounting on compatible mounts<\/li>\n<\/ul>\n

          Visit TeleVue Sol Searcher<\/strong> allows the telescope to be aligned with the Sun without looking directly at it, guaranteeing safe and efficient pointing.<\/p>\n

          \n

          Key features<\/h3>\n\n\n\n\n\n\n\n
          Type<\/strong><\/td>\nH-alpha solar telescope<\/td>\n<\/tr>\n
          Opening<\/strong><\/td>\n40 mm<\/td>\n<\/tr>\n
          Blocking filter<\/strong><\/td>\nB500<\/td>\n<\/tr>\n
          Lens holder<\/strong><\/td>\nRack & Pinion<\/td>\n<\/tr>\n
          Accessories included<\/strong><\/td>\nTeleVue Sol Searcher, 4\u2033 dovetail<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \n

          Why choose this model?<\/h3>\n
            \n
          • Compact and portable<\/li>\n
          • Detailed and secure H-alpha observation<\/li>\n
          • Stable focus thanks to rack-and-pinion focuser<\/li>\n
          • Quick installation on standard mount<\/li>\n<\/ul>\n

            This 40 mm H-alpha solar telescope with B500 filter and Rack & Pinion eyepiece holder<\/strong> is a reliable, high-performance solution for accurately discovering and tracking solar activity.<\/p>","protected":false},"excerpt":{"rendered":"

            T\u00e9lescope solaire H-alpha 40 mm \u2013 Filtre bloquant B500 & Porte-oculaire Cr\u00e9maill\u00e8re Ce t\u00e9lescope solaire H-alpha de 40 mm est sp\u00e9cialement con\u00e7u pour l\u2019observation de la chromosph\u00e8re solaire dans la raie H-alpha (656,28 nm). Compact, performant et simple \u00e0 utiliser, il permet d\u2019explorer en toute s\u00e9curit\u00e9 les ph\u00e9nom\u00e8nes dynamiques du Soleil : protub\u00e9rances, filaments, taches […]<\/p>\n","protected":false},"featured_media":13586,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[880],"product_cat":[642,643],"product_tag":[],"class_list":{"0":"post-13588","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-lunt-solar-systems","7":"product_cat-materiel-pour-lobservation-solaire","8":"product_cat-lunettes-solaires","10":"first","11":"on_supplier","12":"taxable","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/13588","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/comments?post=13588"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/13586"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=13588"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=13588"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=13588"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=13588"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}