Sky-Watcher Skyliner-300P FlexTube SynScan Go-To (305mm / 12") f/4.9 Parabolic WiFi Dobsonian Telescope

The ultimate large-aperture Dobsonian—now with built-in WiFi, premium wide-angle eyepieces, and smartphone imaging capability.
The Skyliner-300P FlexTube SynScan brings together huge light-gathering power, compact portability, and full Go-To automation, making it one of the most capable visual telescopes available for backyard astronomers.

Its 305mm parabolic primary mirror and f/4.9 optics deliver exceptional deep-sky performance with bright, contrasty views of galaxies, nebulae, clusters, and planets. The patented collapsible FlexTube design makes transport easy, while the advanced SynScan Go-To system gives you access to over 42,900 celestial objects, tracking them automatically as they move across the sky.

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Key Features at a Glance

Massive 305mm (12") Light-Gathering Power

• 44% more light than a 250mm scope

• Ideal for deep-sky observing: galaxies, nebulae, globular clusters

• Parabolic primary mirror with RAQ™ aluminium quartz coating (up to 94% reflectivity)

Patented FlexTube Collapsible Design

• Retracts for easier transport and storage

• 3-point tube locking system keeps collimation stable

Built-in WiFi + SynScan Go-To Technology

• Control via SynScan app (iOS/Android), handset, or both

• Full handset database: 42,900+ objects

• App database: 10,000+ objects (unlimited with planetarium software)

• Automatic Go-To tracking of all selected targets

• Alignment methods: 1-star, 3-star, Brightest Star, North-Level

Dual-Encoder Freedom Tracking

• Manually push the telescope at any time

• No realignment required—Go-To tracking remains active

• Quickly reposition to the opposite side of the sky

Premium Accessories Included

• 12.5mm & 20mm 70° wide-angle eyepieces

• Dual-fit Crayford focuser (1.25"/2")

• 1.25" brass compression ring adaptor (prevents eyepiece marring)

• 9×50 finderscope

• Universal smartphone camera adaptor (54–90mm width)

• Direct SLR camera connection

Strong, Smooth, and Quiet Alt-Az Mount

• Large bearings for smooth manual movement

• Heavy-duty servo motors for accurate Go-To tracking

• Accessory tray included

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Performance Highlights

• Magnifications with included eyepieces: 75× & 120×

• Highest practical magnification: 600×

• Telescope focal length: 1500mm (f/4.9)

• Parabolic primary + ultra-thin 0.5mm secondary supports for reduced diffraction

• Quiet Go-To operation

• Perfect for visual observers wanting maximum detail and brightness

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SynScan App Features

• Tonight’s Best tour

• Point-and-Go using your smartphone screen

• Object identification

• Remote control over the internet

• User-defined objects

• Pointing Accuracy Enhancement (PAE)

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Power Requirements

• Requires 12V DC power (tip positive)

• Sky-Watcher 17Ah Power Tank recommended

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What’s in the Box

• Skyliner-300P FlexTube Optical Tube

• Go-To Dobsonian base with built-in WiFi

• 12.5mm 70° wide-angle eyepiece

• 20mm 70° wide-angle eyepiece

• 1.25"/2" dual-fit Crayford focuser

• 1.25" brass compression ring adaptor

• 9×50 finderscope

• Universal smartphone adaptor

• SynScan handset

• Accessory tray

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Technical Specifications

Optical Tube

• Aperture: 305mm

• Focal Length: 1500mm

• Focal Ratio: f/4.9

• Mirror Coatings: Radiant™ Aluminium Quartz (RAQ™), 94% reflectivity

• Secondary Support: 0.5mm ultra-thin vanes

• Max Theoretical Power: 600×

Mount

• Type: Motorised Alt-Az Dobsonian

• Motors: Heavy-duty servo

• Database: 42,900+ objects

• WiFi: Built in

• Dual encoders: Yes

• Power: 12V DC