{"id":107757,"date":"2026-04-29T17:34:19","date_gmt":"2026-04-29T15:34:19","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=107757"},"modified":"2026-07-20T12:33:07","modified_gmt":"2026-07-20T10:33:07","slug":"televue-powermate-4x-2-barlow-lens","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/televue-powermate-4x-2-barlowlens\/","title":{"rendered":"TeleVue Powermate 2\" 4x Barlow Lens"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>TeleVue Powermate 4x 2\" : Barlowlens: telecentrische vergroter van TeleVue<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">De Powermate 4x in 2 inch uitvoering is gebouwd voor fotografische treinen die een hoge, stabiele factor vragen: planeetwerk met grotere camera's, zonnefotografie achter een H-alfa-filter, of spectroscopie.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De 2 inch behuizing houdt de beeldcirkel ruim, zodat ook bij een grotere sensor de hoeken verlicht blijven.<\/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-Barlow-lens-4x-Powermate-2-.jpg\" alt=\"TeleVue Powermate 4x 2\" : title=\"\"><\/figure><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Telecentric instead of Barlow<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">A Powermate is not a Barlow. Behind the negative front group is a second, positive group that makes the light beam parallel again. The result: the magnification factor remains practically constant, regardless of what is behind it and at what distance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A classic Barlow lens changes its magnification as the distance to the sensor or eyepiece increases and shifts the eyepiece's exit pupil. The Powermate does neither of these, making it suitable for long optical trains and for photography.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">For planet photography<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">For moon and planet imaging with a video camera, the image scale determines the detail. The Powermate brings the f-ratio to the level that matches the camera's pixel size, with a predictable, fixed factor.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">With the matching T-ring adapter, you screw a camera directly onto the Powermate, without loose adapters in the train.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Featured accessories<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Voor fotografie hoort de PMT-4201 T-ring adapter erbij, waarmee een camera met T2-aansluiting direct op de Powermate schroeft. Visueel combineert de Powermate met elk oculair van het merk.<\/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 Zonne- en planeetfotografie met grotere camera's<\/li><li>\u2713 Wie 4x nodig heeft zonder factorverloop<\/li><li>\u2713 Veeleisende optische treinen<\/li><li>\u2717 Visueel allroundgebruik<\/li><li>\u2717 Kleine, langzame telescopen<\/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>4x<\/td><\/tr><tr><td><strong>Type<\/strong><\/td><td>Telecentric, 4 elements<\/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>T-ring adapter<\/strong><\/td><td>PMT-4201 (apart verkrijgbaar)<\/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>Powermate 4x van 2 inch voor fotografische treinen met een hoge, constante factor.<\/p>","protected":false},"featured_media":107758,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[1551],"product_cat":[56,3134,3129],"product_tag":[],"class_list":["post-107757","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":[107111],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":107755,"url":"https:\/\/www.telescoop.nl\/en\/televue-powermate-2x-2-barlowlens\/","url_meta":{"origin":107757,"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":107111,"url":"https:\/\/www.telescoop.nl\/en\/televue-pmt-4201-t-ring-adapter\/","url_meta":{"origin":107757,"position":1},"title":"TeleVue PMT-4201 - T-Ring Adapter","author":"Abdullah Ibrar","date":"17-04-2026","format":false,"excerpt":"PMT-4201 T-ring adapter die een camera rechtstreeks op de Powermate zet.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue PMT-4201 T-ring adapter zwarte metalen adapterring met mannelijke T2 schroefdraad voor Tele Vue 4x Powermate 2 inch op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-PMT-4201-T-ring-adapter.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-PMT-4201-T-ring-adapter.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-PMT-4201-T-ring-adapter.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-PMT-4201-T-ring-adapter.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107749,"url":"https:\/\/www.telescoop.nl\/en\/televue-powermate-25x-125-barlowlens\/","url_meta":{"origin":107757,"position":2},"title":"TeleVue Powermate 2.5x 1.25\" - Barlow Lens","author":"Abdullah Ibrar","date":"29-04-2026","format":false,"excerpt":"Powermate 2.5x 1.25 inch with constant magnification for visual and photography.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Barlow lens 2,5x Powermate 1,25\" zwarte TeleVue Powermate 2,5x barlowlens met 1,25 inch telescoopaansluiting, klemring en groene TeleVue-opdruk op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlow-lens-2-5x-Powermate-1-25-.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-2-5x-Powermate-1-25-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlow-lens-2-5x-Powermate-1-25-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlow-lens-2-5x-Powermate-1-25-.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107751,"url":"https:\/\/www.telescoop.nl\/en\/televue-powermate-5x-125-barlowlens\/","url_meta":{"origin":107757,"position":3},"title":"TeleVue Powermate 5x 1.25\" - Barlow Lens","author":"Abdullah Ibrar","date":"29-04-2026","format":false,"excerpt":"Powermate 5x van 1,25 inch voor planeetfotografie met snelle telescopen.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Barlow lens 5x Powermate 1,25\" zwarte TeleVue Powermate 5x barlowlens met 1,25 inch telescoopaansluiting, klemring met stelschroef en groene Powermate-opdruk op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlow-lens-5x-Powermate-1-25-.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-5x-Powermate-1-25-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlow-lens-5x-Powermate-1-25-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Barlow-lens-5x-Powermate-1-25-.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107479,"url":"https:\/\/www.telescoop.nl\/en\/televue-pmt-2200-t-ring-adapter\/","url_meta":{"origin":107757,"position":4},"title":"TeleVue PMT-2200 \u2013 T-Ring Adapter","author":"Abdullah Ibrar","date":"28-04-2026","format":false,"excerpt":"PMT-2200 T-ring adapter that attaches a camera directly to the Powermate.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue PMT-2200 T-ring adapter zwarte T2-adapterring voor 2x Powermate 2 inch met groene opdruk op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-PMT-2200-T-ring-adapter.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-PMT-2200-T-ring-adapter.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-PMT-2200-T-ring-adapter.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-PMT-2200-T-ring-adapter.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107471,"url":"https:\/\/www.telescoop.nl\/en\/televue-pmt-125-t-ring-adapter\/","url_meta":{"origin":107757,"position":5},"title":"TeleVue PMT 1.25\" T-ring Adapter","author":"Abdullah Ibrar","date":"28-04-2026","format":false,"excerpt":"PMT 1.25 inch T-ring adapter that attaches a camera directly to the Powermate.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue PMT T-ring adapter, 1,25\" zwarte T-ring adapter met binnendraad en groene opdruk op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-PMT-T-ring-adapter-1-25-.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-PMT-T-ring-adapter-1-25-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-PMT-T-ring-adapter-1-25-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-PMT-T-ring-adapter-1-25-.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/107757","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=107757"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/107758"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=107757"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=107757"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=107757"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=107757"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}