Sky-Watcher Star Discovery 90i WiFi
Sky-Watcher Star Discovery 90i WiFiSky-Watcher Star Discovery 90i WiFiSky-Watcher Star Discovery 90i WiFiSky-Watcher Star Discovery 90i WiFi

Sky-Watcher Star Discovery 90i WiFi

£365.00✓ 2 year warranty


Out of stock due 4-6 working days
Request a Price Match

About this product

Model:  sw_star_discovery_90i
Part Number:  10273

New Wi-Fi Sky-Watcher Star Discovery 90i f/10 computerised go-to refractor.

The Sky-Watcher STAR DISCOVERY P150i has been designed for wireless control using your Smartphone or Tablet, via the free SynScan App for iOS or Android.

The supplied Synscan™ Wi-Fi module creates it’s own Wi-Fi network so the mount can be used anywhere, without any reliance on other WiFi or mobile networks.

After entering your coordinates into the App and following a simple alignment procedure, you are ready to explore the universe using the App’s intuitive touchscreen menu.

The STAR DISCOVERY P150i and SynScan™ App provides full computerised GO-TO control, enabling the telescope to be automatically slewed to any of the 10.000+ celestial objects in the App’s extensive database.

Incorporates Sky-Watcher’s Freedom-Find™ patented Dual-Encoder Technology, which allows the telescope to be moved manually in either axis without the mount losing its positional information. This gives the user enormous freedom, convenience and flexibility during observing sessions.          

The Sky-Watcher STAR DISCOVERY 90i telescope is a classic two-element, air-spaced, achromatic refractor. Its long focal length is ideal for the detailed high-magnification study of the Moon, planets and the brighter deep-sky targets. 

When combined with a Sky-Watcher 1.25" Erecting prism (available separately) the telescope can also be used during daytime for high power terrestrial observations. 


  • Magnifications (with eyepieces supplied): x36 & x90 
  • Highest Practical Power (Potential): x180
  • Objective Lens Diameter: 90mm
  • Telescope Focal Length: 900mm (f/10)
  • Eyepieces Supplied (1.25"): 10mm & 25mm
  • Red Dot Finder
  • 90° Star Diagonal
  • 1.25” Rack & Pinion Focuser
  • Star Discovery AZ Go-To  Alt-Azimuth Go-To Mount with Dual-Axis Tracking
  • Freedom-Find™ Dual Encoder Technology
  • Synscan™ Wi-Fi Adaptor Module
  • Controller: Free SynScan App for iOS and Android mobile device or Synscan Hand Controller (available separately)
  • SynScan App Database: Total 10,000+ Objects. Deep Sky Objects: 10759, including Messier, NGC, IC, Caldwell Catalogues, Named DSOs, Named Stars: 305, Double Stars: 55, Solar system objects: 7 planets, Sun , Moon. (Unlimited objects when working with a 3rd party planetarium software).
  • SynScan App Alignment Method: Brightest Star Alignment, North-Level Alignment
  • SynScan App's Other Features:  Tonight's Best Sky Tour, Point and Go with a mobile device, Identification of Celestial Objects, Remote control over Internet, User defined objects, Pointing Accuracy Enhancement (PAE)
  • 45mm Sky-Watcher/Vixen type dovetail saddle
  • Interface: SynScan Hand Control Port, DSLR Shutter Release Port (optional cables available separately)
  • Connectivity:  ASCOM platform for Windows PC, Mobile planetarium App for iOS and Android ( SkySafari Plus/Pro, more are coming).
  • Power Requirement: 12v DC 1Amp Power Supply (Tip Positive) or 8 x AA Batteries (not supplied)
  • Sky-Watcher 7Ah or 17Ah Power Tank Recommended
  • Stainless Steel Tripod with Accessory Tray

Telescope Field of View Simulator

Downloads / Manuals

The following manuals and downloads are available for this product:

Sky-Watcher Star Discovery Instruction Manual (PDF)

Customer reviews

Be the first to Write a Review for this item!


Please fill in the form below to ask a question or request a price match.

Your Name:
Your Email Address:
Your Question / Request:
URL of the Cheaper Price:
If you are requesting a price match please let us know the URL where you have seen the product cheaper.

Q1. What is the payload capacity of this mount?

The official quoted payload capacity is 5kg.

Covid-19: We are open for business as usual. Some deliveries are a little delayed. All deliveries are contact free. Thank-you for choosing FLO 🙂