Sky-Watcher Skyliner-350P FlexTube: 14 inch for the serious deep-sky hunter
The Sky-Watcher Skyliner-350P FlexTube features a 355 mm (14-inch) parabolic mirror and a 1600 mm focal length (f/4.5): 36% more light than a 12-inch telescope. The FlexTube system extends the tube from 151 to 97 cm without any loss of collimation. This is the size at which “faint spots” turn into distinct objects, and at which you really need to consider weight: that’s just part of this class, and we’re being honest about it.
What do you see through the Skyliner 350P?
Dark matter filaments in galaxies, color fringing in bright planetary nebulae, globular clusters like grains of sugar down to the core. On planets, a large aperture with good seeing delivers astonishing detail: fine structure in Jupiter's bands, subtle hues on Saturn. Each increment in aperture above 12 inches yields visibly more depth, provided the sky is dark enough.
FlexTube with complete equipment
The three steel guides lock the tube in seconds; collimation is maintained. The 2-inch Crayford focuser focuses without play and the set includes two 70-degree Wide Angle eyepieces (80x and 128x), a 9x50 finder scope, and a universal smartphone adapter.
This is how to get the most out of this telescope
- To them, in part: Buoy 23.5 kg, rocker box 26.5 kg: this is a two-person telescope for stairs or long distances. Plan the route to your observation location accordingly.
- Close the open section: A light shroud around the extended truss keeps stray light and dew out. The standard upgrade for FlexTube models.
- Allow for at least an hour to cool down For the large mirror, especially in winter.
- Collimation at f/4.5 is a fixed ritual on transport; our guide to collimation It takes two minutes.
- For planets: a 6 mm planetary eyepiece gives 267x, for the best nights; this mirror size can handle that well on good nights.
For whom yes and for whom no
Hello the experienced visual observer with a fixed dark spot or a car with space, who knows why every inch of opening counts.
Not As a first telescope or when in doubt about the weight, start with the Skyliner-200P Classic and growth awareness. If you want to automatically search on this scale, there is the 350P SynScan GoTo version. Astrophotography with long exposures belongs to the smart telescopes.
Featured accessories
These accessories add the most after purchase:
- Moon Filter 13%: With this mirror size, the moon is blindingly bright. The Omegon Moon Filter 13% (1.25 inches) dims the light and increases the contrast. More explanation is in our Moon filter guide.
- A 6mm planetary eyepiece: the Sky-Watcher 6mm Planetary UWA Eyepiece provides 267x magnification on this telescope for the best nights. If you want to go a step higher, there is also the 5 mm version (320x).
- Cheshire eyepiece the Sky-Watcher Cheshire Eyepiece Aligning the mirrors is more accurate than the included tools. With these fast opening ratios, it's not a luxury but a essential piece.
Technical specifications
| Feature | Specification |
| Telescope type | Newtonian reflector (Parabolic primary and secondary mirror) |
| Main mirror diameter | 355 mm (14 inches) |
| Tube design | Patented FlexTube™ (Retractable Truss Tube System) |
| Mirror material | Low-Expansion Borosilicate Glass (fast cooling time) |
| Focal length | 1600 mm |
| Opening ratio | f/4.6 |
| Mirror coatings | Radiant™ Aluminum Quartz (RAQ™): up to 94% light reflectance |
| Light output | 40% has greater light-gathering power than the 300 mm model |
| Brake caliper bracket | 0.5 mm ultra-thin spider supports (minimal diffraction) |
| Included eyepieces | 12.5 mm & 20 mm (1.25″): 70° Super Wide Angle |
| Included magnifications | 80x and 128x |
| Maximum useful magnification | 700x (Potential) |
| Focuser | 2″ Precision Crayford focuser (smooth and backlash-free) |
| Included adapters | Both 2″ and 1.25″ adapter with non-marring brass compression ring |
| Seeker | Large 9×50 optical finder scope with crosshair in centering bracket |
| Camera connection | Direct SLR/DSLR connection possible |
| Smartphone adapter | Universal (suitable for phones between 54 mm and 90 mm wide) |
| Material optical tube | Rolled steel finished in Black Diamond metallic |
| Optical tube assembly (OTA) length | Extended: 1510 mm / Retracted: 970 mm |
| Mounting type | Wooden Alt-Azimuth (Dobsonian) with Tension Control & accessory plate |
| Diameter of the base | 640 mm |
| Weight optical tube assembly | 23.5 kg |
| Rocker box weight (base) | 58.4 pounds |
| Total weight | 50 kg |
Included in the box
- Sky-Watcher Skyliner-350P FlexTube Optical Tube Assembly with Rockerbox and Tension Control Handles
- Eyepieces: 12.5 mm & 20 mm (1.25″): 70° Super Wide Angle
- Finder scope: Large 9×50 optical finder scope with crosshairs in centering bracket
- Focuser: 2″ Precision Crayford focuser (smooth and backlash-free)
- Adapters: Both 2″ and 1.25″ adapters with scratch-free brass compression ring
- Smartphone Adapter: Universal (fits phones between 2.1 inches and 3.5 inches wide)
- Free: Stargazer's Handbook by Telescoop.nl (16 pages, Dutch language)
Free Stargazers' Handbook
Every Sky-Watcher telescope from Telescoop.nl comes with our own Stargazer’s Handbook in the box. It’s a 16-page booklet that helps you get started on your first few nights: how to align the finder scope, what magnification to start with, why the image sometimes wobbles, and when a telescope does or doesn’t need to be collimated. It’s not a thick book—just the essentials you really need when you’re starting out.
Honest advice from observers
We sell and use the Sky-Watcher line ourselves. In our Sky-Watcher brand guide We'll explain which series are strong and which you'd rather skip. View the full range on our Sky-Watcher brand page or compare all models in our Dobson assortment. If ordered before 11:59 PM, it will be delivered quickly, in the Netherlands and Belgium. Not sure about the size or version? Call or email us: these are purchases we're happy to help you think through.
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