FocusLynx DirectSync ES25 Motor

#19782 - DirectSync ES25 Motor for Explore Scientific 2.5-inch HEX focuser

FocusLynx DirectSync ES25 The #19782 DirectSync ES25 motor with built-in clutch mechanism and temperature sensor allows both manual and motorized control with a simple twist of the motor housing.  DirectSync ES25 can be ordered separately or as part of the FocusLynx Kit

Designed especially for the Explore Scientific 2.5-inch Hex Focuser, the DirectSync ES25 features simple installation and an elegant design. The DirectSync motors are fully compatiblity with the FocusLynx Control Hub making DirectSync the very best choice for motorizing Explore Scientific's premier astrograph telescopes. 

For owners of the Explore Scientific 3-inch HEX Focuser, see our DirectSync SW30 motor.


  • Explore Scientific FCD100 Series 127mm f/7.5 Triplet ED APO refractor,
  • Explore Scientific ED102-FCD100 Series Air-Spaced Triplet refractor,
  • Explore Scientific ED80-FCD100 Series Air-Spaced Triplet refractor,
  • Explore Scientific Generation II 20-inch Truss Tube Dobsonian,
  • Explore FirstLight 8" Dobsonian- FL-DOB0806-01,
  • Explore FirstLight 10" Dobsonian- FL-DOB1005-01.


DirectSync APO Motor (#19782) FocusLynx DirectSync ES25
  • Motor:  25mm Nippon stepper motor with 25:1 gearhead,
  • Material:  6061 aluminum, anodized black,
  • Overall Length:  5" (127mm)
  • Width:  1.5" (38mm)
  • Weight: 6.2 oz (175 g)
  • Tools Required:  2mm, 2.5mm and 1/16" hex keys (included)
  • Motor Cable:    Standard Cat-5e or Cat-6 (6-ft. length included)
  • Connection to FocusLynx:  Focuser 1 or Focuser 2 port- RJ45 socket
FocusLynx Controller (#19690)
  • Length: 5.1" (130mm)
  • Width: 3.2" (81mm)
  • Height: 1.0" (27mm)
  • Weight: 9.8 oz (280 g)
  • Connectivity: USB/Serial, Ethernet, and WiFi
  • Hand Control: Optional
  • WiFi Connection: Optional
  • Second Stepper: Optional
  • Input Power: 12VDC universal power supply (110 to 230VAC input)
  • Software Drivers: ASCOM local server, X2 native drivers for TheSky X
How to Order:

Contact any Optec dealer, call Toll-Free 1-888-488-0381, email, or visit our ecommerce site:

The DirectSync ES25 includes the #19782 DirectSync ES25 motor only for owners of the FocusLynx Control Hub. Other options may be ordered separately.

Also Available with Integrated ThirdLynx Controller

Visit our new website for the DirectSync ESX25 motor with integrated ThirdLynx control circuit.  Fully compatible with all FocusLynx software drivers.

Additional Details and Resources:

FocusLynx DirectSync ES25 Installations.

FocusLynx Commander Quick Start Guide.

Review the FocusLynx Commander Help file.

Software and Driver Download:

Visit the FocusLynx Commander and ASCOM driver download page here.