{"id":8733,"date":"2025-06-26T17:18:29","date_gmt":"2025-06-26T15:18:29","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=8733"},"modified":"2025-11-21T21:09:54","modified_gmt":"2025-11-21T20:09:54","slug":"sky-watcher-skyliner-250p-flextube-telescope-dobson-parabolique-de-254-mm-10-a-tube-retractable","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/sky-watcher-skyliner-250p-flextube-telescope-dobson-parabolique-de-254-mm-10-a-tube-retractable\/","title":{"rendered":"Sky-Watcher Skyliner-250P FlexTube"},"content":{"rendered":"
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Sky-Watcher Skyliner 254\/1200 - The visual giant at your fingertips<\/h3>\n

Optical power, mechanical fluidity and ease of use: this 254 mm Dobson ticks all the boxes!<\/strong>
\nWith a 254 mm parabolic primary mirror, this telescope captures striking detail on even the faintest deep-sky objects, while offering precise planetary images. Its dual-format 1.25\u2033 \/ 2\u2033 Crayford eyepiece holder ensures precise focusing, even with heavy accessories.<\/p>\n

An intuitive, stable Dobson mount<\/h3>\n

The Dobson mount is based on a simple, robust alt-azimuth principle, popularized in the 70s by John Dobson. The optical tube pivots on two axes thanks to a wooden base, with an adjusted friction system that allows fluid movement by hand while maintaining the chosen position. The result: a telescope quick to set up<\/strong> and pleasant to use<\/strong>without complex adjustments.<\/p>\n

A parabolic mirror for sharp, high-contrast images<\/h3>\n

Unlike spherical mirrors, parabolic mirrors correct the optical aberrations typical of short focal length telescopes. Here, RAQ\u2122 (Radiant\u2122 Aluminum Quartz) treatment ensures up to 94 % reflectivity<\/strong>with excellent durability over time. The ultra-thin 0.5 mm secondary support reduces diffraction for more punctual stars.<\/p>\n

Technical specifications<\/h3>\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>\n254 mm<\/td>\n<\/tr>\n
Focal length<\/strong><\/td>\n1200 mm (f\/5)<\/td>\n<\/tr>\n
Eyepieces included<\/strong><\/td>\n10 mm and 25 mm (in 1.25\u2033 format)<\/td>\n<\/tr>\n
Magnifications supplied<\/strong><\/td>\n48x and 120x<\/td>\n<\/tr>\n
Theoretical maximum magnification<\/strong><\/td>\n500x<\/td>\n<\/tr>\n
Lens holder<\/strong><\/td>\nCrayford Dual-Fit 1.25\u2033 \/ 2\u2033<\/td>\n<\/tr>\n
Mirrors<\/strong><\/td>\nParabolic primary and secondary with RAQ\u2122 treatment<\/td>\n<\/tr>\n
Secondary mirror support<\/strong><\/td>\n0.5 mm - ultra-thin to reduce diffraction<\/td>\n<\/tr>\n
Optical researcher<\/strong><\/td>\n9\u00d750 straight (direct view)<\/td>\n<\/tr>\n
SLR camera connection<\/strong><\/td>\nYes - Direct adaptation possible<\/td>\n<\/tr>\n
Tube locking system<\/strong><\/td>\n3-point clamping<\/td>\n<\/tr>\n
Frame<\/strong><\/td>\nWooden alt-azimuth with accessory tray<\/td>\n<\/tr>\n
Light collection (vs 200 mm)<\/strong><\/td>\n+56%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Benefits<\/h3>\n
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  • Excellent light-gathering capacity for weak objects<\/li>\n
  • Simple, stable and quick to use<\/li>\n
  • Precise, sturdy Crayford eyepiece holder<\/li>\n
  • Parabolic mirrors with high-reflectivity coating<\/li>\n
  • Excellent visuals<\/li>\n<\/ul>\n

    Conclusion<\/h3>\n

    Visit Sky-Watcher Skyliner 254\/1200<\/strong>\u00a0is the ideal companion for the demanding amateur astronomer. Whether you want to scrutinize the fine details of Jupiter, follow the phases of Venus or dive into the Milky Way, this telescope offers the power, precision and simplicity you need. A safe, high-performance choice for advanced visual observation.<\/p>\n<\/div>\n