Focuser Drivers

Astro-Physics GTO (4.1.25, combined telescope/focuser driver)
DownloadUpdated 10-Sep-2008 to correct the installer (it now registers this driver's Focuser as well as its Telescope), no changes to driver itself. Installs a driver for the Astro-Physics series of telescope mounts.
Celestron Unified (6.1.6944, January 2019) Telescope & Focuser

Installs a driver for all computerized Celestron telescopes, now including the new Celestron Focuser. This version has passed the Conformance Checker tests and has support for programmably changing pier side. It also recognises the StarSense HC. Park and Unpark use the mount Hibernate/Wakeup commands for NexStar+ HCs version 5.24. See the help file and release notes(!), installed as part of the driver, for a full description.

This driver does NOT support Synta mounts. Use the SkyWatcher driver listed below.
LakesideAstro Motor Focus System
DownloadDriver for the LakesideAstro Motor Focus System. This driver and controller were tested with the ASCOM Driver Conformance tool. Here are the passing results.
Lunatico's Seletek Focuser
DownloadSoftware and drivers for the Seletek family of controllers. Separate ASCOM drivers are supplied for up to three simultaneous devices (focuser, rotator, dome...).
Meade LX200 Classic and Autostar I (combined telescope/focuser, 5.0.4)
DownloadInstalls a driver for the original Meade LX200 ("classic") telescope mounts (including the 16"), as well as Meade telescopes that use the Autostar I (#495 and #497) controllers, such as the ETX and DS series. This driver provides both telescope and focuser interfaces each of which may be used by separate programs. Do not use this with the LX200GPS, LX200R or the RCX400. V5.0.4 corrects installer and driver version mismatches only, no logic in the driver has changed since 2008.
Meade LX200GPS and LX200R (combined telescope/focuser, 5.0.0)
DownloadInstalls a driver for the Meade LX200GPS and LX200R telescope mounts. This driver provides both telescope and focuser interfaces each of which may be used by separate programs. Do not use this with the LX200 Classic or the Autostar I (#495/#497) controllers. It has been reported that this driver also works with the RCX400 except it doesn't allow access to its unique features.
Micro Focuser (all models)
DownloadDrivers for all models of the Micro Focuser line of precision focusers.
MoonLite Focuser (also handles the Lacey EasyFocus and LazyFocus units)
DownloadDriver for James Lacy's MoonLite focuser. This driver is also supposed to work with the old James Lacy EasyFocus and Lazy Focus units. Caution: the download page prominently features a standalone (non-driver) focuser control program; the 32- and 64-bit ASCOM drivers are listed second and third.
Pegasus Astro Dual Motor Focus Driver
DownloadDriver for the Pegasus Astro Dual Motor Focus controller. Link to download the driver can be found at the bottom of the page you see when you click the Visit button.
Optec TCF-S Focuser Drivers
DownloadThe button takes you to the Optec, Inc. download page for their drivers. Optec supplies and supports ASCOM drivers for their devices.
PC-TCS (combined telescope/focuser/dome 5.0.1)
DownloadInstalls a driver for the COMSOFT PC-TCS telescope control systems. This driver provides combined telescope, focuser, and dome interfaces each of which may be used by separate programs.
RoboFocus (3.0.9)
DownloadInstalls a basic driver for the Technical Innovations RoboFocus focuser. Use this for most applications. The 3.0.9 update adds support for serial ports through COM32.
RoboFocus Control Program (5.2.0a)
DownloadInstalls a combined control program and driver for the Technical Innovations RoboFocus focuser. This is an updated RoboFocus Control Program with a built-in ASCOM driver. This driver has the ability to create several drivers giving the ability to control multiple focusers on the same system. Unless you need this full-function program or the multiple drivers, use the basic driver listed above. Most programs such as MaxIm DL already have the needed focus controls built in. 5.0.2a corrects an uninstall problem if all three instances are not selected)
SmartFocus Focuser (4.0.1)
DownloadInstalls a driver for the JMI SmartFocus focuser.
Trinamic TMCM-1110 Focuser
DownloadTrinamic TMCM-1110 module - Driver for the Trinamic TMCM-1110 stepper motor controller/driver module. Includes support for modules that use the Trinamic Motion Control Language TMCL.