SQM Serial Driver


Unihedron produces a device called the Sky Quality Meter. This device produces measurements for the quality of the sky (i.e. presence or lack of light pollution)

A number of companies produce astronomy automation software. This software can manage the mount, imaging camera, focuser, guide camera, and potentially any other equipment connected to the installation.

The ASCOM standard provides a link between automation software and the equipment being controlled.

Before now, the Unihedron Sky Quality meters have not had ASCOM drivers to allow access from astronomy software. As a result, I blew the dust off my PC, and wrote an ASCOM driver for SQM devices that present a serial COM port interface or a TCP interface. I.e, the devices in the SQM-LU, SQM-LR, and SQM-LE families.


You are installing this at your own risk.

As of version 2.2.0 of this driver, it should function on both 32-bit and 64-bit Windows.

The configuration window allows you to select the COM port (SQM-LU or SQM-LR), or IP Address/Port (SQM-LE) - it also offers "Simulate", which simulates readings rather than connecting to a real SQM device.

The option to return the temperature in Farenheit has been removed as it is not an ASCOM standard.