Changes
/* The TCS */
The user interface is a web browser that communicates with Lesedi's underlying control software. The browser-based software will be referred to as the "TCS" and the back-end software as the "SiTech software". The SiTech software consists of seven GUIs that must be running in the background for the TCS to function fully. Ideally, these GUIs will remain running at all times and the user will only interact with the TCS.
=== Safety ===
Note that there is no hardware lockout for the telescope (except for brackets that can be fitted to hold the telescope vertical for e.g. primary mirror removal). All the subsystems' motors are brushless DC motors and remain powered up all the time; powering down the motors would leave the telescope and subsystems free to move under gravity or external forces (e.g. leaning on it). There is a '''dome lockout''', which is a physical switch in the dome that prevents the shutters and dome from moving. As a safety feature, '''the TCS disables all actions when the dome lockout is on''' and displays the warning shown in the image below. Before the telescope can be used from the TCS, you must ensure that it is safe to turn off the lockout, then do so using the switch at the North end of the pier in the dome.
[[File:lesedi_lockout_warning.png|none|1400px|The dome is locked out and the TCS cannot be used. The dome must be checked for safety before switching off the lockout and continuing.]]
<!-- [[File:Lesedi-controls.png]] to use the full version of the file -->
1.0-m telescope observing limits -->
Below is a screenshot of the main control "Controls" tab of the TCS, where everything required for routine observing is located. There is one other tab, for more rarely used "Advanced" functions. The Controls tab is split into four main panels: control of the telescope and instrument selection on the left, ; status of each in the middle, ; time and position information on the upper right, ; and important buttons that need to be easily accessible on the bottom right.
[[File:lesedi_control_observing.png|none|1400px|The control tab of Lesedi's TCS]]
