{"id":34147,"date":"2025-11-17T13:23:07","date_gmt":"2025-11-17T12:23:07","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=34147"},"modified":"2026-07-20T14:32:27","modified_gmt":"2026-07-20T12:32:27","slug":"william-optics-400mm-losmandy-swan-series-2","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/william-optics-400mm-losmandy-swan-series-2\/","title":{"rendered":"William Optics 400mm Losmandy Swan Series"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>William Optics 400mm Losmandy Swan Series: the wide base for your heavy tube<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Deze William Optics zwaluwstaart uit de Swan-serie is een Losmandy-stijl rail van 400 mm (15,7 inch) in goudkleurig aluminium. Het brede Losmandy-profiel is de standaard voor zwaardere buizen: meer klemvlak en meer stijfheid dan een Vixen-rail, dus geen doorbuiging onder een grote apo met complete fototrein.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The 400 mm length provides ample range for balancing: slide the tube into the clamp until the center of gravity is correct, even if you add a camera or guidescope later.<\/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\/2025\/11\/William-Optics-400mm-Losmandy-Swan-Series-4.jpg\" alt=\"William Optics 400 mm Losmandy zwaluwstaart goudkleurig\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-400mm-Losmandy-Swan-Series-5.jpg\" alt=\"William Optics 400 mm Losmandy zwaluwstaart goudkleurig\" title=\"\"><\/figure><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Features<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>Losmandy profile: wide clamping surface, high rigidity<\/li><li>400 mm (15.7 inch) length for ample balancing range<\/li><li>CNC-gefreesd aluminium, goudkleurig uitgevoerd<\/li><li>Mounting holes for pipe rings and accessories<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Compatibility<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Fits any Losmandy-style (D-profile) saddle clamp. For lighter setups with a Vixen clamp, the 290 mm Vixen dovetail is the suitable alternative.<\/p>\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>Profile<\/strong><\/td><td>Losmandy style (D)<\/td><\/tr><tr><td><strong>Length<\/strong><\/td><td>400 mm (15.7 inches)<\/td><\/tr><tr><td><strong>Material<\/strong><\/td><td>Aluminum<\/td><\/tr><tr><td><strong>Color<\/strong><\/td><td>Goudkleurig<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">You can find more accessories for this merk at the <a href=\"\/en\/brands\/william-optics\/\">William Optics merk Page<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>William Optics 400 mm Losmandy-zwaluwstaart uit de Swan-serie (goudkleurig): breed, stijf profiel voor zware buizen en complete fototreinen.<\/p>","protected":false},"featured_media":97547,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[643],"product_cat":[56,3065,590,538],"product_tag":[],"class_list":["post-34147","product","type-product","status-publish","has-post-thumbnail","product_brand-william-optics","product_cat-telescoop-accessoires","product_cat-dovetails","product_cat-montering-accessoires","product_cat-monteringen","product_shipping_class-licht","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":34133,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-400mm-losmandy-swan-series\/","url_meta":{"origin":34147,"position":0},"title":"William Optics 400mm Losmandy Swan Series","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics 400 mm Losmandy-style dovetail from the Swan series (red): wide, stiff profile for heavy tubes and complete photo trains.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-400mm-Losmandy-Swan-Series-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":34161,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-400mm-losmandy-swan-series-3\/","url_meta":{"origin":34147,"position":1},"title":"William Optics 400mm Losmandy Swan Series","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics 400 mm Losmandy-zwaluwstaart uit de Swan-serie (grijs): breed, stijf profiel voor zware buizen en complete fototreinen.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-400mm-Losmandy-Swan-Series-6.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":34105,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-90mm-buisringen\/","url_meta":{"origin":34147,"position":2},"title":"William Optics 90mm Tube Rings\u00a0","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics 90 mm buisringen: set van twee aluminium ringen met viltvoering, snelsluiting met teflonschijf en M6-bevestiging. Krasvrije, stevige montage.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-90mm-Buisringen-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":34140,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-290mm-zwaluwstaart\/","url_meta":{"origin":34147,"position":3},"title":"William Optics 290mm Dovetail","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics 290 mm Vixen-zwaluwstaart met meerdere montagesleuven: lange rail voor betere balans en het meenemen van accessoires op elke Vixen-klem.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-290mm-Zwaluwstaart-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":33911,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-pleiades-181-998-apo-septuplet-astrograph-ota\/","url_meta":{"origin":34147,"position":4},"title":"William Optics Pleiades 181\/998 APO Septuplet Astrograph OTA","author":"","date":"15-11-2025","format":false,"excerpt":"William Optics Pleiades 181: seven-element FPL-53 astrograph 181\/998 f\/5.5 with integrated corrector and flat full-frame image. Pure photography tube with camera adapters and Bahtinov mask.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-181-AP-181-998-Apochromatische-refractor-Pleiades-Astrograph-OTA-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":34143,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-40mm-2-swan-oculair\/","url_meta":{"origin":34147,"position":5},"title":"William Optics 40mm 2\" SWAN Eyepiece","author":"","date":"17-11-2025","format":false,"excerpt":"William Optics SWAN 40 mm 2 inch oculair: 72 graden beeldveld, 5 lenzen, 28 mm eye relief, multicoating en filterdraad. Maximaal overzicht voor deep-sky.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-40mm-2-SWAN-Oculair.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/34147","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=34147"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/97547"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=34147"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=34147"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=34147"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=34147"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}