Sky-Watcher Flextube 400P SynScan

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Your Price: $6,320.00
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Product Overview

The exciting new Sky-Watcher Dobsonian SynScan series is precision engineered instrument that will allow you to easily find and enjoy viewing night sky treasures, such as Planets, Nebulae, Star Clusters, Galaxies and much more. With its patented collapsible tube design, these Dobsonians are truly the ultimate in portability and performance.

The elegant truss tube design was carefully engineered to combine ease of use, extreme portability and consistent performance in an affordable package. Unlike other truss tube designs, the SkyWatcher Flextube Dobsonian does not need to be disassembled between uses. It transports as two compact pieces that can be assembled and ready to use in just seconds! It is easy to collimate once set up, and it holds its collimation throughout the evening! The patented Tension Control Handle allows users to add or reduce tension, thereby increasing or decreasing the friction between the optical tube and the sideboards. The SynScan™ AZ hand control allows you point your telescope at a specific object, or even tour the night sky at the touch of a button!! The user-friendly menu system allows automatic slewing to over 42,900 objects. Even an inexperienced astronomer can master its variety of features in a few observing sessions. The patented dual encoder design allows the telescope to be moved manually whenever the user wishes - but with no need for re-alignment! The Sky-Watcher Dobsonian SynScan series combines the convenience and affordability of the traditional Dobsonian with the convenience of a computerized Go-To telescope.

SynScan™ AZ hand control SPECIFICATIONS:
  • Power Supply: 10 to 15 V DC 1Amp, 2.1mm Plug (Center positive)
  • Motor type: DC Servo Motors,
  • Resolution: Motor encoder: 1,620,000 counts per revolution, Main axis encoder: 11,748 counts per revolution
  • Slew speeds: 1.0X, 2.0X, 8X, 16X, 32X, 200X, 400X, 600X, 800X, 1000X
  • Tracking Rates: Sidereal, Lunar, Solar
  • Tracking Mode: Dual Axes Tracking
  • Alignment Method: Brightest-Star Alignment, Two-Star Alignment
  • Database: 25 user defined objects. Complete M, NGC and IC catalog, partial SAO catalogues, total 42,900 objects
  • Go-To Pointing Accuracy: Up to 5 arc min


Optical Info
Optical DesignNewtonian
Mirror Coatings94% Aluminum
Glass TypeBorosilicate
Primary Aperture (mm)406
Focal Length (mm)1800
Secondary Diameter102mm
Secondary Obstruction (by diameter)25%
Secondary Obstruction by Area6%
Observational Info
Dawes Limit0.29
Rayleigh Limit0.34
Limiting Mag.15.5
Minimum Magnification58
Maximum Magnification799
Light Gathering (compared to next size down)30%
General Info
Focuser2" Dual Speed Crayford
OTA Length (Retract/Ext.)42.5"/66.5"
OTA Outer Diameter17.875"
OTA Weight (with accessories)72
Dob Base Weight105
Dob Base Measurements36"x34"
Zenith Eyepiece Height74"
Included Finder9x50 Finder
Included DiagonalNo
Included Eyepieces25/10 Plossl
Magnification w/ Included Eyepieces72x/180x
Included CaseNo


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