#19754 - Optec Hand Control

$145.00

Quantity
In Stock: 10

The #19754 Optec Hand Control provides an easy, vibration-free method of focusing the telescope when using the FocusLynx hub, Gemini, and Hercules Focusing Rotators. Stock item #19754 replaces both #19695 FocusLynx Hand Control and #19752 Gemini Hand Control. Fully compatible with Starlight Instruments FocusBoss II control hubs.

Featuring IN and OUT buttons, a 2-line display, and a rotary Fine Focus Knob, this Hand Control is a "must-have" option for any Optec focusing system where the operator may be present at the telescope.

NEW! The Optec Hand Control is now compatible with all three focuser systems below and includes an electronic Fine Focus Knob for greater control and tactile feedback while using eyepieces at the telescope. An embedded rotary encoder switch allows one-hand fine focus control while using an eyepiece. No need to move your eye away from the eyepiece - with this improvement the Optec hand control provides simple, intuitive and precise control of the focus motor.

Compatible with:

  • #19690 - FocusLynx dual focus control hub,
  • #19749 - Hercules 76 focusing rotator,
  • #19750 - Gemini 96 focusing rotator,
  • #19751 - Gemini 120 Big Bore focusing rotator.
  • Starlight Instruments FocusBoss II control hub.


The Optec Hand Control plugs into the Hand Controller port on the bottom of the FocusLynx or Gemini Control Hub or directly into the Hercules focusing rotator body using the included telephone handset cord.

Compatible with:

  • #19690 - FocusLynx dual focus control hub,
  • #19749 - Hercules 76 focusing rotator,
  • #19750 - Gemini 96 focusing rotator,
  • #19751 - Gemini 120 Big Bore focusing rotator.
  • Starlight Instruments FocusBoss II hand control.


Replaces #19695 FocusLynx Hand Control and #19752 Gemini Hand Control.

FocusLynx and Gemini Hand Controls can be upgraded to this universal Optec Hand Control with #19754-FW easy-to-install firmware upgrade.


  • Material: 6061 aluminum, anodized black
  • Display: 2-line with Position and Temperature
  • Buttons: IN, OUT, and MODE buttons
  • Focus/Rotation Control: Rotary encoder with 1X, 10X, 100X and 500X speeds
  • Communications: SPI to FocusLynx and Gemini Hubs via MAX232 chip
  • Length: 6.3" (160mm)
  • Width: 3.2" (81.4mm)
  • Thickness: 0.9" (22.7mm)
  • Weight: 6.4 oz (180 g)
  • Mounting: Stainless Steel hanging hook included
  • Connection to hub: RJ22 plug labeled "Hand Controller"
  • Recommended Cable: Telephone Handset Cable (25-ft. and 12-ft. lengths included)
  • Firmware: V2.0.0 upgradeable with replacement 28-pin PIC chip - see #19754-FW.