Rigel Systems
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nSTEP and STEPPER Motor Kits for Camera Lens and Telescope Focus Rings
Picking a solution is easy as
1: Select Belt Drive of Split Gear
2: Select usb-nSTEP controller

3: Select an accessory
4: Download and install the software

We do over 100 variants of focusers, if you don't see yours here, e-mail us!
Because we do over 100 variants, bracket kits are semi-custom and lead time is 1-2 weeks.



Starfield photographed with
Rokinon 135mm lens using
usb-nSTEP Belt Drive Stepper Focusing
Click on image for more detail



8.71 x 6.04 deg FOV of Orion's Belt to M42
(c) Dr. Max Whitby (astroguides.net) taken remotely at Deep Sky Chile (deepskychile.com) from UK with Samyang 135mm (f2) lens, Astrodon 5nm Ha Filter, ZWO ASI1600mm cooled to -20C
using usb-nSTEP Split Gear Drive Stepper Focusing

Click on image for more detail

1: Select Stepper Motor


Belt Drive Stepper with Crossbar $119.95

Belt Drive Stepper Kit
Motorize yourCamera or Telescope focus ring with our powerful stepper motor. for the ultimate in accurate auto-focusing. Stepper motor has 0.1 degree step size, easily lifts 8 pounds. Stepper can be quickly detatched for manual focusing. Uses standard 6-wire telephone cable and RJ12 connector.

Kit includes crossbar, stepper and drive belt.

Camera Lens, Imager, dovetail bar not included.


Split Gear Stepper with ADM R100-100mm Ring $179.95

Split Gear Stepper Kit
Motorize your Camera or Telescope focus ring with our powerful stepper motor. for the ultimate in accurate auto-focusing. Stepper motor has 0.1 degree step size, easily lifts 8 pounds. Stepper can be quickly detatched for manual focusing. Uses standard 6-wire telephone cable and RJ12 connector.

Kit includes stepper, ADM ring with Stepper bracket, and split gear.

ADM ring dovetal adapter, ADM dovetail, telescope, imager and mount not included.

2: Select usb-nSTEP controller

usb-nSTEP -- Computerize your Stepper Focus Motor
pc & wifi

Fully ASCOM compliant so it will work with popular focus control programs. Can be operated for temperature compensation with the optional temperature sensor (below). Full step and half step control from computer and display of step count. USB and 12V battery power cables included. Software and ASCOM drivers for Windows xp/vista/7 and . Apporximately 1.5 inches wide by 4 inches long by 0.5 inches thick.

Compatible with Rigel Systems, Feathertouch, Robofocus & Moonlite stepper motors (please identify your stepper motor when purchasing).

Available in 2 configurations

Scroll down for package deals.

wifi for android & iphone available
Fully control your focuser from your iphone or android phone

usb-nSTEP
basic (PC only)
Full control of your focuser from your PC



$139.95
(focuser, stepper motor and pc not included)

usb-nSTEP
pc, buttons & wifi
Full control of your focuser from your PC or manually using buttons or phone. No PC required for standalone operation! No PC required for for manual-only operation, just the 12V DC stepper motor supply. Full configuration, speed adjustment from your android or iphone.

$189.95
(focuser, stepper motor, phone and pc not included)

Package Deals

Belt Drive Package
order on our website
and get a free temperature sensor!

usb_nSTEP basic (PC only) & Belt Drive Stepper
$249.90

usb_nSTEP with buttons & wifi & Belt Drive Stepper
$289.90

 

Split Gear Drive Package
order on our website and get a free temperature sensor!

usb_nSTEP basic (PC only) & ADM ring with Split Gear and Stepper
$309.90

usb_nSTEP with buttons & wifi & ADM ring with Split Gear and Stepper
$349.90

3: Select an accessory


Temperature Sensor
$14.95
Temperature Sensor--
Add Temperature Compensation to Focusing:
Telescopes change focus as temperature changes expand/contract the length of the telescope tube as temperature increases/decreases. Adding the external temperature sensor to the usb-nSTEP allows your autofocus software to and automatically compensate for these temperature changes. Unlike internal temperature sensors located inside the controller that are affected by the heat generated by the electronics, the external temperature sensor can be attached to the telescope to get a more accurate measurement of the ambient temperature.

4: Download software for WINDOWS

usb-nSTEP software for WINDOWS

basic (PC only) manual for WINDOWS

with Buttons & wifi manual for WINDOWS

wifi manual for WINDOWS