{"id":8730,"date":"2025-06-26T17:18:29","date_gmt":"2025-06-26T15:18:29","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=8730"},"modified":"2026-01-22T17:46:54","modified_gmt":"2026-01-22T16:46:54","slug":"sky-watcher-skyliner-400p-flextube","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/sky-watcher-skyliner-400p-flextube\/","title":{"rendered":"Sky-Watcher Skyliner-400P FlexTube"},"content":{"rendered":"
\n

Sky-Watcher Skyliner 406P FlexTube - The ultimate Dobson for visual astronomers<\/h3>\n

A giant 406 mm opening in a retractable format!<\/strong>
\nThe Sky-Watcher Skyliner 406P FlexTube is an observational beast designed for demanding astronomers. With its 406 mm primary mirror, it captures unsuspected detail in the faintest deep-sky objects, while remaining fluid to use thanks to its manual Dobson mount. All in a retractable FlexTube design for easy transport and storage.<\/p>\n

NEW :<\/strong> supplied with two wide-angle eyepieces (12.5 mm and 20 mm - 70\u00b0 field of view), a 1.25\u2033 adapter with brass clamping ring to protect your eyepieces, a universal smartphone adapter, plus a Crayford 2\u2033 double-speed eyepiece holder for fine focusing, even at high magnification.<\/p>\n

FlexTube: a giant telescope that fits in your car<\/h3>\n

The system Retractable FlexTube<\/strong> allows the tube to be reduced in length from 168.5 cm to just 107.1 cm. This foldable design makes transporting a 406 mm much more accessible. Once in the viewing position, the 3-point locking system ensures perfect rigidity.<\/p>\n

Dobson mount: simplicity for performance<\/h3>\n

Dobson's wooden alt-azimuth mount rests on a fluid swivel base, allowing intuitive manual star tracking. This proven concept, popularized by John Dobson, makes this telescope quick to assemble, simple to use, and extremely stable - no electronics, no motors, just observing pleasure.<\/p>\n

Exceptional parabolic optics<\/h3>\n

The primary mirror parabolic<\/strong> with RAQ\u2122 (Radiant Aluminum Quartz) coating offers reflectivity up to 94 % for bright, sharp, high-contrast images. The ultra-thin secondary support (0.5 mm) minimizes diffraction, guaranteeing great sharpness in deep-sky stars and structures. This telescope is a benchmark for both high-magnification planetary observations and diffuse nebulae.<\/p>\n

Technical specifications<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Lens type<\/strong><\/td>\nNewton reflector on Dobson mount<\/td>\n<\/tr>\n
Primary mirror diameter<\/strong><\/td>\n406 mm<\/td>\n<\/tr>\n
Focal length<\/strong><\/td>\n1800 mm (f\/4.4)<\/td>\n<\/tr>\n
Eyepieces included<\/strong><\/td>\n12.5 mm & 20 mm - Wide angle 70\u00b0 (1.25\u2033)<\/td>\n<\/tr>\n
Magnifications supplied<\/strong><\/td>\n90x & 144x<\/td>\n<\/tr>\n
Theoretical maximum magnification<\/strong><\/td>\n812x<\/td>\n<\/tr>\n
Lens holder<\/strong><\/td>\nCrayford 2\u2033 double speed with 1.25\u2033\/2\u2033 adapters<\/td>\n<\/tr>\n
Mirrors<\/strong><\/td>\nParabolic primary and secondary - RAQ\u2122 treatment up to 94%<\/td>\n<\/tr>\n
Secondary support<\/strong><\/td>\n0.5 mm - minimum diffraction<\/td>\n<\/tr>\n
Researcher<\/strong><\/td>\n9\u00d750 straight (optical)<\/td>\n<\/tr>\n
Smartphone adapter<\/strong><\/td>\nUniversal - 54 to 90 mm width<\/td>\n<\/tr>\n
SLR connection<\/strong><\/td>\nYes - Direct camera adapter<\/td>\n<\/tr>\n
Tube dimensions<\/strong><\/td>\nDiameter: 540 mm \/ Length: 1071 mm (retracted) - 1685 mm (extended)<\/td>\n<\/tr>\n
Locking system<\/strong><\/td>\nMechanical 3-point locking<\/td>\n<\/tr>\n
Frame<\/strong><\/td>\nWooden alt-azimuth with accessory tray<\/td>\n<\/tr>\n
Light collection (vs 350 mm)<\/strong><\/td>\n+34,5%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Why choose the Skyliner 406P FlexTube?<\/h3>\n
    \n
  • A 406 mm diameter for unrivalled visual performance<\/li>\n
  • FlexTube retractable tube: easy to transport despite its size<\/li>\n
  • RAQ\u2122-coated parabolic optics - ultra-bright images<\/li>\n
  • Crayford 2\u2033 double-speed eyepiece holder for fine focusing<\/li>\n
  • Sturdy, flowing Dobson frame, perfect for visuals<\/li>\n<\/ul>\n

    Conclusion<\/h3>\n

    Visit Sky-Watcher Skyliner 406P FlexTube<\/strong> is an elite instrument for astronomers with a passion for visual observation. Designed to seek out the finest details in the deep and planetary sky, yet transportable and easy to use, it is quite simply the king of consumer Dobsons. An astronomical dream machine.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Sky-Watcher Skyliner 406P FlexTube \u2013 Le Dobson ultime pour les astronomes visuels Un g\u00e9ant de 406 mm d\u2019ouverture dans un format r\u00e9tractable ! Le Sky-Watcher Skyliner 406P FlexTube est une b\u00eate d\u2019observation con\u00e7ue pour les astronomes exigeants. Avec son miroir primaire de 406 mm, il capte des d\u00e9tails insoup\u00e7onn\u00e9s dans les objets les plus faibles […]<\/p>\n","protected":false},"featured_media":8879,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[822],"product_cat":[816,746,392],"product_tag":[],"class_list":{"0":"post-8730","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-sky-watcher","7":"product_cat-nouveautes","8":"product_cat-dobson","9":"product_cat-telescopes_reflecteurs","11":"first","12":"on_supplier","13":"taxable","14":"shipping-taxable","15":"purchasable","16":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/8730","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/comments?post=8730"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/8879"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=8730"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=8730"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=8730"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=8730"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}