{"id":107546,"date":"2026-04-28T12:14:38","date_gmt":"2026-04-28T10:14:38","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=107546"},"modified":"2026-07-20T12:26:20","modified_gmt":"2026-07-20T10:26:20","slug":"televue-ethos-13mm-100-eyepiece","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/televue-ethos-13mm-100-oculair\/","title":{"rendered":"TeleVue Ethos 13mm 100\u00b0 \u2013 Eyepiece"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>TeleVue Ethos 13mm 100\u00b0 : Oculair: Ethos-oculair met 100 graden beeldveld<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">De Ethos 13 mm is het oculair waarmee de hele serie in 2007 begon en nog altijd het meest verkochte model. De veldstop van 22,3 mm geeft ongeveer hetzelfde ware beeldveld als een 26 mm Ploessl, maar dan bij het dubbele van de vergroting.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dat is de kern van het Ethos-idee: een donkerdere hemelachtergrond en meer detail, zonder dat je overzicht inlevert.<\/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-Oculair-Ethos-13mm-1-25-2-3.jpg\" alt=\"TeleVue Ethos 13mm 100\u00b0 : Oculair\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-13mm-1-25-2-1.jpg\" alt=\"TeleVue Ethos 13mm 100\u00b0 : Oculair\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-13mm-1-25-2-4.jpg\" alt=\"TeleVue Ethos 13mm 100\u00b0 : Oculair\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-13mm-1-25-2-.jpg\" alt=\"TeleVue Ethos 13mm 100\u00b0 : Oculair\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-13mm-1-25-2-2.jpg\" alt=\"TeleVue Ethos 13mm 100\u00b0 : Oculair\" title=\"\"><\/figure><\/figure>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8d39b2df wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:38%\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-13mm-1-25-2-1.jpg\" alt=\"TeleVue Ethos 13mm 100\u00b0 : Oculair\" title=\"\"><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:62%\">\n<h4 class=\"wp-block-heading\">What a 100-degree field of view does<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">A classic Ploessl has 50 degrees, a Nagler has 82 degrees. At 100 degrees, your eye can no longer take in the field at once: you\u2019re looking around the image instead of *at* it. That\u2019s the effect the Ethos series is known for.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Practically, this also means that objects remain in view for longer. On a manually tracked Dobson, this saves constant readjustment.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8d39b2df wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:38%\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-13mm-1-25-2-4.jpg\" alt=\"TeleVue Ethos 13mm 100\u00b0 : Oculair\" title=\"\"><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:62%\">\n<h4 class=\"wp-block-heading\">Waarom juist deze brandpuntsafstand<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">In de reeks 21, 13 en 8 mm is de 13 mm de middelste stap. Op de meeste telescopen levert hij een vergroting die bruikbaar blijft onder wisselende omstandigheden, ook als het seeing niet meewerkt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Met ongeveer 585 gram is dit een fors oculair. Op een Dobson met een lichte hoedring is het verstandig de balans te controleren voordat je het instrument loslaat.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8d39b2df wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:38%\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-13mm-1-25-2-.jpg\" alt=\"TeleVue Ethos 13mm 100\u00b0 : Oculair\" title=\"\"><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:62%\">\n<h4 class=\"wp-block-heading\">Viewing Comfort and Dioptrx<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">The eye relief is 15 mm at every focal length in the series. The height of the foldable eyecup is adjustable, so your eye is always in the same position.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you wear glasses due to astigmatism, you can replace them with Dioptrx on the eyepiece. This corrects your own cylindrical aberration without the eyeglass lenses costing contrast and eye distance.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8d39b2df wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:38%\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-13mm-1-25-2-2.jpg\" alt=\"TeleVue Ethos 13mm 100\u00b0 : Oculair\" title=\"\"><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:62%\">\n<h4 class=\"wp-block-heading\">In your telescope<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">In een telescoop met een brandpuntsafstand van 1200 mm levert dit oculair ongeveer 92x met een waar beeldveld van circa 1,06 graden. Je rekent dat voor je eigen telescoop uit met de veldstop: waar beeldveld = 57,3 x veldstop gedeeld door de brandpuntsafstand van de telescoop.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De veldstop van dit model is 22,3 mm. Dat getal, en niet de brandpuntsafstand alleen, bepaalt hoeveel hemel je werkelijk ziet.<\/p>\n<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Included<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>Foldable rubber eyecup<\/li><li>Eyecup protector<\/li><li>Dust cover for the stitch<\/li><li>Filter thread abandoned<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Featured accessories<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Every Ethos eyepiece is compatible with the TeleVue Dioptrx, a corrector for astigmatism that allows you to observe without glasses. If you\u2019re using a fast Newtonian, the Paracorr coma corrector will bring out that last bit of edge sharpness. For a 2-inch focuser, an Everbrite zenith mirror is the logical addition, and an eyepiece case protects your investment while on the go.<\/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 Deep-sky waarnemingen als vast werkpaard<\/li><li>\u2713 Waarnemers die met een enkel Ethos-oculair willen beginnen<\/li><li>\u2713 Telescopen met een 1,25 of 2 inch focuser<\/li><li>\u2717 Monteringen die weinig gewicht verdragen<\/li><li>\u2717 Wie het laagste vergrotingsbereik zoekt<\/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>Focal length<\/strong><\/td><td>13 mm<\/td><\/tr><tr><td><strong>Apparent field of view<\/strong><\/td><td>100 degrees<\/td><\/tr><tr><td><strong>Effective field stop<\/strong><\/td><td>22,3 mm<\/td><\/tr><tr><td><strong>Eye distance<\/strong><\/td><td>15 mm<\/td><\/tr><tr><td><strong>Stitch gauge<\/strong><\/td><td>1.25 inch and 2 inch<\/td><\/tr><tr><td><strong>Filter thread<\/strong><\/td><td>Yes<\/td><\/tr><tr><td><strong>Dioptrx-compatible<\/strong><\/td><td>Yes<\/td><\/tr><tr><td><strong>Coating<\/strong><\/td><td>Fully multi-coated, blackened lens edges<\/td><\/tr><tr><td><strong>Eyecup<\/strong><\/td><td>Foldable, with protective cap<\/td><\/tr><tr><td><strong>Weight<\/strong><\/td><td>circa 585 g<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">All wide-angle eyepieces are on the <a href=\"\/en\/telescope-accessories\/eyepieces-and-barlows\/wide-angle-eyepieces-wide-field\/\">page featuring wide-field eyepieces<\/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>Ethos-oculair van 13 mm met 100 graden beeldveld, het meest veelzijdige model uit de serie.<\/p>","protected":false},"featured_media":107551,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[1551],"product_cat":[3129,56,3131],"product_tag":[],"class_list":["post-107546","product","type-product","status-publish","has-post-thumbnail","product_brand-televue","product_cat-oculairs-en-barlows","product_cat-telescoop-accessoires","product_cat-groothoek-oculairen-wide-field","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":[107470],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":107527,"url":"https:\/\/www.telescoop.nl\/en\/televue-ethos-8mm-oculair\/","url_meta":{"origin":107546,"position":0},"title":"TeleVue Ethos 8mm \u2013 Eyepiece","author":"Abdullah Ibrar","date":"28-04-2026","format":false,"excerpt":"Ethos-oculair van 8 mm met 100 graden beeldveld, licht en geschikt voor binoviewers.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Oculair Ethos 8mm 1,25\"\/2\" productfoto van het Ethos 8 mm oculair met groene opschriftring en zilverkleurige 2 inch skirt op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-8mm-1-25-2-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-8mm-1-25-2-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-8mm-1-25-2-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-8mm-1-25-2-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107545,"url":"https:\/\/www.telescoop.nl\/en\/televue-ethos-10mm-100-oculair\/","url_meta":{"origin":107546,"position":1},"title":"TeleVue Ethos 10mm 100\u00b0 \u2013 Eyepiece","author":"Abdullah Ibrar","date":"28-04-2026","format":false,"excerpt":"Ethos-ocular 10mm with a 100-degree field of view and dual barrel sizes of 1.25 and 2 inches.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Oculair Ethos 10mm 1,25\"\/2\" productfoto van het Ethos 10 mm oculair met groene opschriftring, gekartelde grip en zilverkleurige 2 inch skirt op witte achtergrond","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-10mm-1-25-2-.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-Ethos-10mm-1-25-2-.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-10mm-1-25-2-.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Oculair-Ethos-10mm-1-25-2-.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":107124,"url":"https:\/\/www.telescoop.nl\/en\/televue-ethos-21mm-100-2-oculair\/","url_meta":{"origin":107546,"position":2},"title":"TeleVue Ethos 21mm - 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