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Sky-Watcher Flextube 16 inch collapsible Dobsonian telescope on base

Sky-Watcher

Sky-Watcher Flextube 16" 400P SynScan GOTO Collapsible Dobsonian telescope

SKU CH-372M-JYD7V

A collapsible Dobsonian telescope with a 406 mm aperture, 1800 mm focal length, and SynScan GOTO locating 42,900 objects

  • Large 406 mm aperture gathers abundant light for bright deep-sky views
  • 1800 mm focal length enables up to 812x magnification for detailed planetary observation
  • SynScan hand controller with 42,900 object database provides automated GoTo tracking
  • Patented collapsible tube design transports in two compact pieces for easy portability
  • Tension Control Handle adjusts friction for smooth, stable manual movement

16-inch 406mm aperture Dobsonian

The Sky-Watcher Flextube 16" 400P SynScan GOTO is a collapsible Newtonian telescope built for serious visual astronomy. Its 406mm parabolic primary mirror gathers substantial light for detailed views of deep-sky objects. The SynScan hand controller provides GoTo access to a 42,900 object database. The patented tube design collapses into two compact pieces for transport while staying assembled between sessions.

Upgrade from smaller Dobsonians or manual mounts

Moving from a smaller aperture telescope brings a dramatic increase in light grasp and resolution at 812x maximum magnification. The 1800mm focal length delivers high-power planetary detail that smaller scopes cannot resolve. The SynScan GoTo system replaces manual star-hopping with automated object location and tracking. The jump is worth it when you want aperture and computerised finding in a single portable package.

Check your transport and power setup

Verify that your vehicle can carry the two collapsed tube sections and the rocker box dimensions. Ensure you have a 12V DC power source capable of supplying the mount during extended sessions. Confirm your observing site allows enough clearance for the full 1800mm focal length tube when extended. The Tension Control Handle adjusts friction but requires a stable, level base for accurate GoTo performance.

Highlights

  • Large 406 mm aperture gathers abundant light for bright deep-sky views
  • 1800 mm focal length enables up to 812x magnification for detailed planetary observation
  • SynScan hand controller with 42,900 object database provides automated GoTo tracking
  • Patented collapsible tube design transports in two compact pieces for easy portability
  • Tension Control Handle adjusts friction for smooth, stable manual movement

Specifications

No published specifications for this item yet.

Questions about this item

What tube length does the 406 mm aperture Flextube collapse to for transport?

The patented collapsible tube design transports as two compact pieces that assemble in seconds, keeping the optical tube intact between sessions.

How do I align the SynScan GOTO before the first observing session?

Power on the hand controller, perform the built-in alignment routine using bright stars from the 42,900 object database, then the system will locate and track targets automatically.

How often should I check collimation on the 1800 mm focal length parabolic mirror?

The design maintains consistent collimation throughout each session; verify alignment only after transport or if images appear asymmetric, using the standard three-screw collimation process.

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