Sky-Watcher EQ-AL55i PRO Go-To Astronomy Mount

Product code: 20859
in stock
£759.00 UK Price
£632.50 (ex. VAT) International Price
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Product information

The exciting and versatile new EQ-AL55i PRO features a dual-position counterweight bar, making it usable at ALL latitudes from 0-90 degrees thus solving the problem for users living in, or travelling to, areas of extreme latitude, beyond the capability of most conventional mounts.

The EQ-AL55i is fully controllable with a smart device via it's built in Wi-Fi module using the free Synscan Pro App for iOS or Android.

The EQ-AL55i PRO mount features a built-in illuminated polar scope for precision alignment, interfaces for USB-C, autoguider, optional SynScan hand controller and SNAP shutter control for your DSLR (programmable via Sky-Watcher’s free SynScan Pro app for iOS and Android).

With its 10kg payload capacity, the EQ-AL55i PRO is well-equipped, via its 45mm dovetail saddle, to handle a wide variety of OTAs and peripheral equipment.
The EQ-AL55i PRO is a great mount for the astro-photographer and visual observer that wants a mount combining excellent performance and good portability. A 200mm tripod extension tube (code 20860) and Synscan computerised handset and cable (code 20948/20193) and 5kg Counterweight (code 20950) are available as an optional accessories.


  • High Precision DC servo Motors.
  • RA axis Resolution 0.32 Arc Second
  • Slewing speed up to 4°/sec (1000X).
  • Ports: USB, SNAP, Power, ST-4 & Synscan Hand Controller (optional)
  • Built-in Wi-Fi Module
  • ST-4 type Autoguider Interface: Supports 0.25x, 0.5x, 0.75x 1x guiding rate
  • Single Axis Tracking
  • Tracking Rate: Lunar, Solar or Sidereal
  • Controller: Synscan Pro App (iOS, Android or PC)
  • Compatible with Synscan™ Hand Controller (optional accessory) with 42,900+ Object database containing complete Messier, NGC, and IC catalogues.
  • Supplied with Polarscope with LED illumination
  • Latitude Adjustment 0° to 90°
  • R.A. Worm Gear 73.4mm Diameter, 144 Teeth
  • DEC Worm Gear 51.6mm Diameter, 100 Teeth
  • R.A. Worm Drive 11mm Diameter
  • DEC Worm Drive 11mm Diameter
  • 45mm Dovetail Saddle
  • Payload Capacity 10kg 
  • Counterweight Bar 20mm Diameter, Mountable in 2 x Positions
  • Counterweights supplied: 1 set of 5.3kg (1.8kg & 3.5kg)
  • Weight of Mount Head only: 3.8kg
  • 1.75" Diameter Stainless Steel Tripod & Accessory Tray, Weight 5.7kg
  • Power Requirement DC12V 2A Tip Positive (via external supply) 

Product Info

Brand SkyWatcher
Product Code 20859
Delivery Weight Package