usb-nSTEP computer stepper controller with buttons

Description Full control of your focuser from your PC No PC required for manual-only operation! Operates off of the 12V DC stepper motor supply. Speed fully adjustable. (focuser, stepper motor and pc not included) usb-nSTEP has an an optional external temperature sensor to support temperature compensation of the focus position.We're talking about focusing within 1/100ths of a mm ! As the night outside cools, the telescope contracts, and the focus can change by multiple 100ths of a mm. With usb-nSTEP, once you have everything initialized with your autofocus software, you can execute a refocus in 30-40 seconds to adapt to filter changes, temperature changes or telescope flexure as you aim your telescope to different part of the sky. In 30-40 seconds your autofocus software will take a pre-programmed set of images to recalculate the perfect focus setting without your intervention. Warranty Non-EXPLORE SCIENTIFIC Branded/Third-Party Products Click Here CA Residents: Prop 65 WARNING(S)