{"id":107598,"date":"2026-04-28T17:37:34","date_gmt":"2026-04-28T15:37:34","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=107598"},"modified":"2026-04-28T18:01:03","modified_gmt":"2026-04-28T16:01:03","slug":"televue-35-inch-extension-tube","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/televue-verlengstuk-35-inch\/","title":{"rendered":"TeleVue 3.5 inch Extension Tube"},"content":{"rendered":"

TeleVue Verlengstuk 3,5 inch \u2013 verlengstuk<\/h3>\n\n\n\n

Bij veel telescopen ligt het brandpunt net iets verder naar buiten. Daardoor kun je met bepaalde oculairs of camera\u2019s niet voldoende scherpstellen. Met dit 3,5 inch (8,75 cm) verlengstuk<\/strong> van TeleVue los je dat probleem eenvoudig op.<\/p>\n\n\n\n

Het verlengstuk is ontworpen voor gebruik in een 2 inch focuser<\/strong>. Je plaatst het verlengstuk in de focuser en vervolgens het oculair of een adapter in het verlengstuk. Zo cre\u00eber je extra optische lengte zonder aanpassingen aan je telescoop.<\/p>\n\n\n\n

\"TeleVue<\/figure>\n\n\n\n

Oplossing voor focusproblemen<\/h3>\n\n\n\n

Dit verlengstuk is vooral nuttig wanneer je net te weinig backfocus hebt bij gebruik van accessoires. Door de extra lengte van 8,75 cm<\/strong> komt het brandpunt op de juiste positie te liggen.<\/p>\n\n\n\n

Ook bij het scherpstellen op dichterbij gelegen objecten tijdens Natuurwaarneming kan extra verlenging helpen om het beeld scherp te krijgen.<\/p>\n\n\n\n

Degelijke afwerking met messing klemring<\/h3>\n\n\n\n

Het verlengstuk is aan de binnenzijde gezwart om interne reflecties te beperken. De ge\u00efntegreerde messing klemring<\/strong> zorgt ervoor dat oculairs en adapters stevig vastzitten zonder dat de insteekhulzen beschadigen.<\/p>\n\n\n\n

De constructie is stabiel en betrouwbaar, zoals je van TeleVue mag verwachten. Het betreft een puur mechanisch accessoire en heeft geen invloed op de optische kwaliteit van je telescoop.<\/p>\n\n\n\n

What we recommend<\/h3>\n\n\n\n
    \n
  • Controleer of je focuser een\u00a02-inch connection<\/strong>\u00a0has<\/li>\n\n\n\n
  • Draai de klemring gelijkmatig vast voor optimale grip<\/li>\n\n\n\n
  • Combineer met hoogwaardige 2 inch oculairs voor maximale prestaties<\/li>\n<\/ul>\n\n\n\n

    What you can do with it<\/h3>\n\n\n\n
      \n
    • Focusproblemen met oculairs oplossen<\/li>\n\n\n\n
    • Camera\u2019s correct op scherpte krijgen<\/li>\n\n\n\n
    • Extra verlenging cre\u00ebren bij visueel gebruik of fotografie<\/li>\n<\/ul>\n\n\n\n

      Specifications<\/h3>\n\n\n\n

      General<\/h3>\n\n\n\n
        \n
      • Type:<\/strong>\u00a0Adapter<\/li>\n\n\n\n
      • Design:<\/strong>\u00a0Extension<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

        TeleVue Verlengstuk 3,5 inch \u2013 verlengstuk wordt geleverd met messing klemring en is geschikt voor 2 inch focusers.<\/p>","protected":false},"featured_media":107603,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[1551],"product_cat":[56,469,587],"product_tag":[],"class_list":["post-107598","product","type-product","status-publish","has-post-thumbnail","product_brand-televue","product_cat-telescoop-accessoires","product_cat-astro-fotografie","product_cat-camera-accessoires","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":107599,"url":"https:\/\/www.telescoop.nl\/en\/televue-verlengstuk-2-inch-50-mm\/","url_meta":{"origin":107598,"position":0},"title":"TeleVue 2-Inch 50mm Extension Tube","author":"Abdullah Ibrar","date":"28-04-2026","format":false,"excerpt":"TeleVue Verlengstuk 2 inch 50 mm \u2013 verlengstuk wordt geleverd met messing klemring en is geschikt voor 2 inch focusers.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Verlengstuk, 2\" zwart cilindervormig verlengstuk\/adaptersleeve met TeleVue-logo, messingkleurige binnenring en zijklem met duimschroef op een witte achtergrond.","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Verlengstuk-3-5-met-klemring-8-75cm-1-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Verlengstuk-3-5-met-klemring-8-75cm-1-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Verlengstuk-3-5-met-klemring-8-75cm-1-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Verlengstuk-3-5-met-klemring-8-75cm-1-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107524,"url":"https:\/\/www.telescoop.nl\/en\/televue-ebx-2120-2-oculairhouder-verlengstuk\/","url_meta":{"origin":107598,"position":1},"title":"TeleVue EBX-2120 \u2013 2\u2033 Eyepiece Holder Extension","author":"Abdullah Ibrar","date":"28-04-2026","format":false,"excerpt":"TeleVue EBX-2120 \u2013 2\" oculairhouder verlengstuk wordt geleverd als robuuste verlengbus voor extra backfocus en 2\" filtergebruik.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Oculairhouder verlengstuk, 2\" zwart 2 inch verlengstuk met schroefdraad op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculairhouder-verlengstuk-2-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculairhouder-verlengstuk-2-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculairhouder-verlengstuk-2-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculairhouder-verlengstuk-2-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107775,"url":"https:\/\/www.telescoop.nl\/en\/televue-imaging-system-254-mm-verlengstuk\/","url_meta":{"origin":107598,"position":2},"title":"TeleVue Imaging System 1-inch - 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