Sky-Watcher Heritage 150P FlexTube Virtuoso GTi Tabletop Dobsonian Telescope

Designed for observing the Moon, planets and deep-sky objects, Sky-Watcher Heritage 150P FlexTube Virtuoso GTi combines a 150 mm parabolic primary mirror with a 750 mm focal length and an f/5 focal ratio. Its compact design supports use on a tabletop or an optional tripod.

Motorised Virtuoso GTi alt-azimuth mount provides automatic Go-To positioning and dual-axis tracking. After entering the observing location coordinates and completing an alignment procedure, the telescope can automatically slew to objects selected in the SynScan app.

Built-in Wi-Fi creates its own wireless network. The telescope can therefore be controlled from a smartphone or tablet without relying on an external Wi-Fi or mobile network.

Free SynScan app for iOS and Android provides access to more than 10,000 celestial objects. It offers several alignment methods, a selection of the best objects visible during the night, celestial object identification, Point and Go, remote control over the Internet, user-defined objects and Pointing Accuracy Enhancement.

Freedom-Find dual-encoder technology allows manual movement on the altitude and azimuth axes without losing the mount’s positional information. This design allows the user to alternate between motorised positioning and manual movement during an observing session.

Collapsible FlexTube structure reduces the tube dimensions for easier transport and storage. The telescope measures 600 mm in height when the tube is unextended and pointing vertically.

Parabolic primary mirror is designed to bring incoming light rays to the same focal point and reduce spherical aberration. This configuration provides versatile optics for lunar, planetary and deep-sky observation.

RAQ Radiant Aluminium Quartz coatings are applied to the primary and secondary mirrors. They provide up to 94 percent reflectivity and long-term protection for the optical surfaces.

Mount is designed for direct placement on a tabletop. A standard 3/8-inch thread under the base also allows the telescope to be attached to an optional tripod. The Sky-Watcher AZ5 stainless steel tripod with product code 20316 is recommended for this configuration.

DC servo motors drive the mount. Available tracking rates are sidereal, lunar, solar and alignment-free solar tracking. Ten slewing speeds allow fast or precise mount movements.

Compatibility extends to Windows computers through the ASCOM platform and to mobile planetarium applications for iOS and Android, including SkySafari Plus, SkySafari Pro, Luminos and Stellarium.

Supplied equipment includes 10 mm and 25 mm eyepieces with a 1.25-inch barrel and a red-dot finder. A SynScan hand controller can also be used but is available separately.

Technical specifications

• Optical design: parabolic Newtonian reflector
• Installation: motorised tabletop Dobsonian mount
• Primary mirror diameter: 150 mm
• Focal length: 750 mm
• Focal ratio: f/5
• Primary mirror: parabolic
• Primary and secondary mirror coating: RAQ Radiant Aluminium Quartz
• Stated reflectivity: up to 94 percent
• Magnifications with supplied eyepieces: 30x and 75x
• Highest potential practical power: 300x
• Supplied eyepieces: 10 mm and 25 mm
• Eyepiece barrel: 1.25-inch
• Finder: red dot
• Tube structure: collapsible FlexTube
• Mount: Virtuoso GTi tabletop Go-To alt-azimuth
• Tripod attachment: standard 3/8-inch thread
• Recommended optional tripod: Sky-Watcher AZ5 stainless steel tripod
• Recommended tripod product code: 20316
• Drive system: DC servo motors
• Tracking mode: dual-axis tracking
• Tracking rates: sidereal, lunar, solar and alignment-free solar
• Slewing speeds: 0.5x, 1x, 8x, 16x, 32x, 64x, 128x, 400x, 600x and maximum
• Resolution: 1.5 arc-seconds
• Auxiliary encoder resolution: 1068 counts per revolution
• Approximate angular resolution of auxiliary encoders: 20 arc-minutes
• Encoder technology: Freedom-Find dual encoders
• Manual movement without losing positional information
• Dovetail saddle: 45 mm Sky-Watcher and Vixen type
• Built-in Wi-Fi
• Self-contained Wi-Fi network created by the mount
• Mobile control: free SynScan app for iOS and Android
• Compatible SynScan hand controller available separately
• SynScan app database: more than 10,000 objects
• Deep-sky objects in the app: 10,759
• Deep-sky catalogues: Messier, NGC, IC and Caldwell
• Named stars in the app: 305
• Double stars in the app: 55
• Solar System objects: seven planets, Sun and Moon
• Compatible with third-party planetarium software
• Alignment methods: one-star, three-star, brightest-star and North-Level alignment
• App functions: Tonight’s Best, Point and Go, celestial object identification, remote control over the Internet, user-defined objects and Pointing Accuracy Enhancement
• Interfaces: SynScan hand control port, DSLR shutter release port and built-in Wi-Fi
• DSLR shutter release cable: available separately
• Computer compatibility: ASCOM platform for Windows
• Compatible mobile applications: SkySafari Plus, SkySafari Pro, Luminos and Stellarium
• Height with unextended tube pointing vertically: 600 mm
• Base diameter: 330 mm
• Total weight: 9 kg
• Battery power: eight AA batteries, not supplied
• External power: 7.5 to 14 V DC, 1 A, centre-positive