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NexStar mount driver

Supported devices

Any NexStar protocol compatible mount (SkyWatcher; Celestron; Orion; ...) connected over the serial port of the hand controller or network.

Single device is present on startup (no hot-plug support).

Supported platforms

This driver is platform independent.


INDIGO Astronomy open-source license.


indigo_server indigo_mount_nexstar

Status: Stable

Driver is developed and tested with:

  • SkyWatcher AZ-EQ6 GT
  • SkyWatcher EQ6 Pro
  • Celestron Advanced VX


Use URL in form tcp://host:port to connect to the mount over network (default port is 9999). To export the mount over the network one can use Nexbridge, and the serial connection to the mount should be over the hand controler.

This driver uses libnexstar library

A non-standard switch property "Tracking mode" is provided by this driver for fork mounts. It is set to "auto" by default and in such case driver tries to guess the mode from tracking mode reported by the hand controller. If the mount is not tracking, error is reported.

A non-standard switch property "Guider rate" is provided by this driver.

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