Sky-Watcher Virtuoso GTi 150/750 WiFi Dobsonian Telescope
The Sky-Watcher Virtuoso GTi 150/750 WiFi Dobsonian is an outstanding combination of premium optical quality, practical portability, and a modern motorized GoTo mount with wireless control. It is suitable for beginners just discovering the wonders of the night sky, as well as for more advanced amateur astronomers looking for a reliable and capable instrument for regular observing sessions and astrophotography. With a focal ratio of f/5, this reflector belongs to the category of fast Newtonian telescopes, which significantly reduces exposure times when imaging deep-sky objects. The compact and robust construction ensures resistance to vibrations and light wind, providing a stable image even in challenging conditions. The total system weight of just 9 kg makes transportation to your observing site effortless.
Optical Performance
The 150 mm aperture gathers enough light to reveal distant deep-sky objects (DSO). The Ring Nebula in Lyra and the Dumbbell Nebula are beautifully visible; the globular cluster M13 in Hercules resolves into individual stars at its edges. For planetary observation, the telescope delivers rich detail - Cassini's Division in Saturn's rings, cloud belts on Jupiter, the phases of Venus, and surface features on Mars. The light-gathering capacity of the 150 mm mirror is approximately 460 times greater than the dark-adapted human eye with a 7 mm pupil, which in practice means revealing objects down to magnitude 13.5. The maximum usable magnification reaches 300x, with a Rayleigh resolution limit of 0.95″ and a Dawes limit of 0.77″.
Optics and Tube Construction
The telescope uses a parabolic primary mirror with diffraction-limited performance and multi-coatings with 94% reflectivity, maximizing light transmission and ensuring high image contrast. Thin secondary mirror support vanes minimize diffraction spikes and further contribute to image quality. The tube is fitted with a 1.25″ helical focuser, allowing smooth and precise focusing with no backlash. The FlexTube collapsible design allows the tube to fold down into a compact configuration - taking up significantly less space in a bag or car boot, while assembly before an observing session takes only a few seconds. The tube is attached to the mount via a Vixen-style dovetail bar, making it easy to swap for other optical tubes with the same type of bar.
Virtuoso GTi Mount with SynScan GoTo Technology
The Virtuoso GTi mount with SynScan GoTo technology automatically slews the telescope to any selected object and then tracks it smoothly as the Earth rotates. The mount generates its own WiFi network, which can be connected to wirelessly using a smartphone or tablet - no additional accessories or cables required. The free SynScan app for iOS and Android enables complete initialization, object selection from an extensive catalogue, and full mount control. Once installed, the app does not require an internet connection during use. Operation is intuitive even for complete beginners - simply enter your geographic location and time, and the telescope automatically calculates the positions of all available objects.
Freedom-Find Dual Encoder Technology
The mount features Freedom-Find technology with dual encoders. This means the telescope can be rotated manually - without engaging the motors - and the mount will not lose track of its current position. This feature is extremely practical when quickly moving to another object or when conserving battery power.
Power Supply and Mounting Options
The mount is powered via a DC 5.5/2.1 mm connector at 12 V. The tabletop base has a 3/8″ thread on the underside, allowing the entire system to be mounted on a standard photographic tripod. The base diameter of 330 mm provides sufficient stability even when used with heavier eyepieces or a camera.
Key Specifications
| Parameter |
Value |
| Optical design |
Newtonian reflector (FlexTube) |
| Aperture |
150 mm |
| Focal length |
750 mm |
| Focal ratio |
f/5 |
| Mirror coating reflectivity |
94% multi-coatings |
| Focuser |
1.25″ helical focuser |
| Dovetail type |
Vixen-style |
| Maximum usable magnification |
300x |
| Limiting magnitude |
13.5 mag |
| Resolution (Rayleigh) |
0.95″ |
| Resolution (Dawes) |
0.77″ |
| Mount type |
Alt-azimuth GoTo (Virtuoso GTi) |
| GoTo system |
SynScan with WiFi |
| Wireless control |
WiFi - iOS and Android (SynScan app) |
| Encoder technology |
Freedom-Find dual encoders |
| Power supply |
12 V DC (connector 5.5/2.1 mm) |
| Tripod thread |
3/8″ |
| Base diameter |
330 mm |
| Total system weight |
9 kg |
Who Is This Telescope For?
- Beginners who want an easy-to-use GoTo telescope with smartphone control from day one
- Intermediate and advanced amateurs looking for a fast, portable 150 mm reflector for deep-sky observing
- Astrophotographers who need a compact f/5 Newtonian with motorized tracking for short-exposure imaging
- Anyone who values a lightweight, collapsible design that can be set up and used anywhere in minutes
