{"id":107753,"date":"2026-04-29T17:15:52","date_gmt":"2026-04-29T15:15:52","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=107753"},"modified":"2026-07-20T12:33:04","modified_gmt":"2026-07-20T10:33:04","slug":"televue-big-barlow-2-2x-barlow-lens","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/televue-big-barlow-2-2x-barlowlens\/","title":{"rendered":"TeleVue Big Barlow 2\" 2x \u2013 Barlow Lens"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>TeleVue Big Barlow 2\" 2x : Barlowlens: barlowlens van TeleVue<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">De TeleVue Big Barlow verdubbelt de vergroting van 2 inch oculairs en is daarmee de partner van de grote Naglers en Panoptics. Met de bijgeleverde reductie werkt hij ook met 1,25 inch oculairs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Zo wordt een 31 mm Nagler een effectieve 15,5 mm met exact dezelfde veldstop: hetzelfde stuk hemel, twee keer zo groot afgebeeld.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-3 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-BIG-Barlowlens-2-2x.jpg\" alt=\"TeleVue Big Barlow 2x\" 2x title=\"\"><\/figure><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Wat een goede barlow doet<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Een barlow verlengt de effectieve brandpuntsafstand van je telescoop en verhoogt zo de vergroting van elk oculair dat erin steekt. Twee oculairs plus een barlow dekken daarmee vier vergrotingen af.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De kwaliteit van het glas bepaalt of je dat gratis krijgt of ervoor betaalt met contrast. TeleVue gebruikt hoogbrekend glas met meervoudige coatings; het verschil met het oculair alleen is in de praktijk niet te zien.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Effect op de oogafstand<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Een klassieke barlow vergroot de oogafstand van korte oculairs iets. Bij een Ploessl is dat welkom: een 15 mm met barlow kijkt ruimer weg dan een losse 7,5 mm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Wil je een vergrotingsfactor zonder enig effect op oogafstand of uittredepupil, dan is de telecentrische Powermate het alternatief binnen het merk.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Featured accessories<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Combineer de barlow met de TeleVue Ploessls voor een compacte set die vier vergrotingen dekt. De oculairs zijn parfocaal, dus wisselen kost nauwelijks scherpstelwerk.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">For whom yes and for whom no<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>\u2713 Bezitters van 2 inch oculairs<\/li><li>\u2713 Wie een overzichtsoculair ook als middenvergroting wil inzetten<\/li><li>\u2713 Grote Dobsons<\/li><li>\u2717 Wie alleen 1,25 inch oculairs heeft, de kleine 2x volstaat dan<\/li><li>\u2717 Fotografie op afstand, zie de Powermate 2x<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Specifications<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Magnification factor<\/strong><\/td><td>2x<\/td><\/tr><tr><td><strong>Stitch gauge<\/strong><\/td><td>2 inches<\/td><\/tr><tr><td><strong>Coating<\/strong><\/td><td>Fully multi-coated<\/td><\/tr><tr><td><strong>Filter thread<\/strong><\/td><td>Yes<\/td><\/tr><tr><td><strong>Suitable for<\/strong><\/td><td>2 inch oculairs, met adapter ook 1,25 inch<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">More eyepieces and Barlows are on the <a href=\"\/en\/telescope-accessories\/eyepieces-and-barlows\/\">Accessory page for eyepieces and Barlows<\/a>. You can find the complete selection of this merk on the <a href=\"\/en\/brands\/televue\/\">TeleVue merk Page<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>TeleVue Big Barlow 2x van 2 inch voor de grote Naglers en Panoptics.<\/p>","protected":false},"featured_media":107754,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[1551],"product_cat":[56,3134,3129],"product_tag":[],"class_list":["post-107753","product","type-product","status-publish","has-post-thumbnail","product_brand-televue","product_cat-telescoop-accessoires","product_cat-barlow-lenzen-en-focal-extenders","product_cat-oculairs-en-barlows","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":107755,"url":"https:\/\/www.telescoop.nl\/en\/televue-powermate-2x-2-barlowlens\/","url_meta":{"origin":107753,"position":0},"title":"TeleVue Powermate 2x 2\" - Barlow Lens","author":"Abdullah Ibrar","date":"29-04-2026","format":false,"excerpt":"Powermate 2x 2-inch with constant factor for large eyepieces and sensors.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Barlow lens Powermate 2x 2'' zwarte TeleVue 2x Powermate barlowlens met 2 inch aansluiting, klemring met stelschroeven en groene TeleVue Powermate-opdruk op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlow-lens-Powermate-2x-2-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlow-lens-Powermate-2x-2-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlow-lens-Powermate-2x-2-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlow-lens-Powermate-2x-2-.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107740,"url":"https:\/\/www.telescoop.nl\/en\/televue-2x-125-barlowlens\/","url_meta":{"origin":107753,"position":1},"title":"TeleVue 2x 1.25\" Barlow Lens","author":"Abdullah Ibrar","date":"29-04-2026","format":false,"excerpt":"TeleVue 1.25 inch 2x Barlow lens that doubles magnification without quality loss.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Barlowlens 1,25\", 2x zwarte TeleVue 2x barlowlens met 1,25 inch aansluiting, klemring en groene TeleVue-opdruk op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlowlens-1-25-2x.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlowlens-1-25-2x.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlowlens-1-25-2x.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlowlens-1-25-2x.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":32336,"url":"https:\/\/www.telescoop.nl\/en\/televue-bandmate-type-2-oiii-125-lijnfilter\/","url_meta":{"origin":107753,"position":2},"title":"TeleVue Bandmate Type 2 OIII 1.25\" - Line Filter","author":"Abdullah Ibrar","date":"02-11-2025","format":false,"excerpt":"Bandmate Type 2 1.25-inch OIII filter for maximum contrast on planetary nebulae.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Filters Filter OIII Bandmate Type 2 1,25\" zwart 1,25 inch OIII-filter met groene glaslaag en TeleVue Bandmate Type 2 opdruk op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/TeleVue-Filters-Filter-OIII-Bandmate-Type-2-1-25-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/TeleVue-Filters-Filter-OIII-Bandmate-Type-2-1-25-2.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/TeleVue-Filters-Filter-OIII-Bandmate-Type-2-1-25-2.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/TeleVue-Filters-Filter-OIII-Bandmate-Type-2-1-25-2.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107742,"url":"https:\/\/www.telescoop.nl\/en\/televue-3x-125-barlowlens\/","url_meta":{"origin":107753,"position":3},"title":"TeleVue 3x 1.25\" Barlow Lens","author":"Abdullah Ibrar","date":"29-04-2026","format":false,"excerpt":"TeleVue 3x barlow van 1,25 inch voor hoge planeetvergrotingen met comfortabele oculairs.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Barlowlens 1,25\", 3x zwarte TeleVue 3x barlowlens met 1,25 inch aansluiting en groene TeleVue-opdruk op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlowlens-1-25-3x.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlowlens-1-25-3x.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlowlens-1-25-3x.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlowlens-1-25-3x.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107344,"url":"https:\/\/www.telescoop.nl\/en\/televue-panoptic-41mm-68-groothoek-oculair\/","url_meta":{"origin":107753,"position":4},"title":"TeleVue Panoptic 41mm - 68\u00b0 Wide-Angle Eyepiece","author":"Abdullah Ibrar","date":"21-04-2026","format":false,"excerpt":"Panoptic-oculair van 41 mm met de maximale veldstop van 46 mm voor langzame telescopen.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Oculair Panoptic 41mm 2\" zwarte Panoptic groothoek-oculair met groene Tele Vue 41mm PANOPTIC opdruk, geribbelde grip en 2 inch insteekhuls in productfoto","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Panoptic-41mm-2-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Panoptic-41mm-2-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Panoptic-41mm-2-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Panoptic-41mm-2-.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":90710,"url":"https:\/\/www.telescoop.nl\/en\/sky-watcher-2-inch-super-deluxe-ed-barlowlens-2x\/","url_meta":{"origin":107753,"position":5},"title":"Sky-Watcher 2 inch Super-Deluxe ED 2x Barlow Lens (with 1.25 inch Adapter)","author":"","date":"01-12-2025","format":false,"excerpt":"Dual Barlow lens with ED glass in 2 inch format, including 1.25 inch adapter: doubles the magnification of any eyepiece while maintaining sharpness and contrast.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/107753","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/comments?post=107753"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/107754"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=107753"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=107753"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=107753"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=107753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}