Focusers (12)
Static, script-free list for people, search engines and AI agents. Machine-readable data: data/focusers.json (field reference in SCHEMA.md). Prices are typical new street prices in US dollars; check retailers before buying.
| Product | Type | Design | Max load kg | Control | Weight kg | USD | Status |
|---|---|---|---|---|---|---|---|
| Celestron Focus Motor for SCT and EdgeHD A motor that attaches to the focus knob of Celestron SCT, EdgeHD and RASA telescopes for remote focusing at three speeds from the hand controller. | electronic | sct | hand-controller | 0.42 | 260 | current | |
| Deep Sky Dad AF3 A compact stepper autofocuser from Deep Sky Dad for an existing focuser knob. USB control with ASCOM or INDI; it needs its own 12 to 14 V power supply. | electronic | coupler | usb, ascom, hand-controller | 0.25 | 175 | current | |
| iOptron iEAF A stepper-motor autofocuser from iOptron for compatible telescope focusers, rated for 5 kg and supplied with a temperature sensor for focus compensation. | electronic | coupler | 5 | usb, ascom | 0.254 | 200 | current |
| Pegasus Astro FocusCube 3 A compact stepper focus motor from Pegasus Astro that attaches to an existing focuser knob, lifts up to 6 kg and runs from a USB port with ASCOM drivers. | electronic | coupler | 6 | usb, ascom | 0.28 | 260 | current |
| PrimaLuceLab Sesto Senso 3 A robotic focus motor from PrimaLuceLab for external focusers, giving 0.7 micron steps on 1:10 reduction knobs. It also drives the ARCO camera rotator. | electronic | coupler | usb, ascom | 0.37 | 300 | current | |
| PrimaLuceLab Sesto Senso 3 SC A PrimaLuceLab robotic focus motor for SC-type telescopes, with a dedicated port that connects directly to the ARCO camera rotator. | electronic | sct | usb, ascom | 0.44 | 350 | current | |
| Starlight Instruments Feather Touch FTF2015BCR A 2 inch rotatable Crayford focuser from Starlight Instruments with 10:1 dual-speed fine focus, 1.5 inch of travel, a drawtube brake and a compression ring. | manual | crayford | 3.6 | 0.8 | 680 | current | |
| Starlight Instruments Feather Touch FTF2015BCR-RP A 2 inch rack-and-pinion Feather Touch with 10:1 dual-speed fine focus, 1.5 inch of travel, a brake and a compression ring, built with a stronger pinion for heavier loads. | manual | rack-and-pinion | 4.5 | 0.9 | 690 | current | |
| Starlight Instruments Feather Touch FTF3035B A 3 inch dual-speed Feather Touch focuser from Starlight Instruments with 3.5 inch (89 mm) of drawtube travel and a brake, for larger refractors and Newtonians. | manual | crayford | 1.5 | 750 | current | ||
| ZWO EAF Pro ZWO's upgraded autofocuser with a built-in battery, Bluetooth 5.0 and manual focus buttons. Rated for a 5 kg payload and meant for newer ASIAIR units. | electronic | coupler | 5 | usb, bluetooth, asiair, ascom | 0.258 | 300 | current |
| ZWO EAF Standard 5V The previous-generation ZWO autofocuser, powered over USB instead of 12 V and rated for 5 kg. Succeeded by the EAFN and EAF Pro in 2025. | electronic | coupler | 5 | usb, asiair, ascom | 0.277 | 200 | discontinued |
| ZWO EAFN A compact stepper-motor autofocuser from ZWO that turns an existing focuser knob. Rated for 5 kg and controlled by newer ASIAIR units or ASCOM software. | electronic | coupler | 5 | usb, asiair, ascom | 0.215 | 200 | current |