OPTEC Hand Controller for FocusLynx Hub, Gemini and Hercules Focusing Rotators

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- Vibration-free manual focus control without touching the telescope
- Compatible with FocusLynx, Gemini, Hercules, and FocusBoss II
- Fine-focus rotary knob for precise one-hand adjustments
- Two-line display with dedicated IN and OUT control buttons
OPTEC Hand Control for Focusing Rotators
The Optec Hand Control is a convenient, vibration-free way to adjust focus while remaining at the telescope, making it an excellent upgrade for visual observers and hands-on imagers. Compatible with the FocusLynx Hub, Gemini, and Hercules Focusing Rotators, this updated controller replaces both the earlier FocusLynx and Gemini hand controls while also remaining fully compatible with Starlight Instruments FocusBoss II control hubs. Featuring dedicated IN and OUT buttons, a bright two-line display, and an integrated electronic fine-focus knob, it delivers smooth, precise control without touching the telescope and disturbing your view.
Designed for intuitive one-hand operation, the built-in rotary encoder allows fine focus adjustments while keeping your eye at the eyepiece for faster, more accurate focusing. The controller connects directly to the hand control port on the FocusLynx or Gemini Control Hub, or plugs straight into the Hercules body using the included telephone-style handset cord. It’s a must-have accessory for anyone who wants quick, tactile, and highly precise focus control at the telescope.
Compatibility List:
- #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.
Specifications:
- 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 in (160 mm)
- Width: 3.2 in (81.4 mm)
- Thickness: 0.9 in (22.7 mm)
- 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
- Firmware: V2.0.0 upgradeable with replacement 28-pin PIC chip - see #19754-FW.
- Compatibility:
- 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.
Other Information
- Country of Manufacture: United States
OPTEC Hand Control for Focusing Rotators
The Optec Hand Control is a convenient, vibration-free way to adjust focus while remaining at the telescope, making it an excellent upgrade for visual observers and hands-on imagers. Compatible with the FocusLynx Hub, Gemini, and Hercules Focusing Rotators, this updated controller replaces both the earlier FocusLynx and Gemini hand controls while also remaining fully compatible with Starlight Instruments FocusBoss II control hubs. Featuring dedicated IN and OUT buttons, a bright two-line display, and an integrated electronic fine-focus knob, it delivers smooth, precise control without touching the telescope and disturbing your view.
Designed for intuitive one-hand operation, the built-in rotary encoder allows fine focus adjustments while keeping your eye at the eyepiece for faster, more accurate focusing. The controller connects directly to the hand control port on the FocusLynx or Gemini Control Hub, or plugs straight into the Hercules body using the included telephone-style handset cord. It’s a must-have accessory for anyone who wants quick, tactile, and highly precise focus control at the telescope.
Compatibility List:
- #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.
Specifications:
- 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 in (160 mm)
- Width: 3.2 in (81.4 mm)
- Thickness: 0.9 in (22.7 mm)
- 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
- Firmware: V2.0.0 upgradeable with replacement 28-pin PIC chip - see #19754-FW.
- Compatibility:
- 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.
- 1x Hand Controller
- 1x RJ22 6-ft cable
- 1x RJ22 25-ft cable
- Vibration-free manual focus control without touching the telescope
- Compatible with FocusLynx, Gemini, Hercules, and FocusBoss II
- Fine-focus rotary knob for precise one-hand adjustments
- Two-line display with dedicated IN and OUT control buttons
OPTEC Hand Control for Focusing Rotators
The Optec Hand Control is a convenient, vibration-free way to adjust focus while remaining at the telescope, making it an excellent upgrade for visual observers and hands-on imagers. Compatible with the FocusLynx Hub, Gemini, and Hercules Focusing Rotators, this updated controller replaces both the earlier FocusLynx and Gemini hand controls while also remaining fully compatible with Starlight Instruments FocusBoss II control hubs. Featuring dedicated IN and OUT buttons, a bright two-line display, and an integrated electronic fine-focus knob, it delivers smooth, precise control without touching the telescope and disturbing your view.
Designed for intuitive one-hand operation, the built-in rotary encoder allows fine focus adjustments while keeping your eye at the eyepiece for faster, more accurate focusing. The controller connects directly to the hand control port on the FocusLynx or Gemini Control Hub, or plugs straight into the Hercules body using the included telephone-style handset cord. It’s a must-have accessory for anyone who wants quick, tactile, and highly precise focus control at the telescope.
Compatibility List:
- #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.
Specifications:
- 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 in (160 mm)
- Width: 3.2 in (81.4 mm)
- Thickness: 0.9 in (22.7 mm)
- 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
- Firmware: V2.0.0 upgradeable with replacement 28-pin PIC chip - see #19754-FW.
- Compatibility:
- 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.
Other Information
- Country of Manufacture: United States
- 1x Hand Controller
- 1x RJ22 6-ft cable
- 1x RJ22 25-ft cable

OPTEC Hand Controller for FocusLynx Hub, Gemini and Hercules Focusing Rotators

