Changes

=== The Controls Tab ===

Below is a screenshot of the main "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 subsystem in the middle; time and positional information on the upper right; and important buttons that need to be easily accessible on the bottom right.

It is important to note the '''Emergency Stop''' button, on the lower right of the TCS display. It is always visible on both tabs, and will stop the motion of the dome, shutters, telescope, rotators and secondary and tertiary mirrors. It will not stop the guider XY-slides or the mirror covers. The Emergency Stop button should be clicked if anything that is moving is going to cause a hazard. Once clicked, the Emergency Stop button will be toggled to read '''Reset''', and you must ensure that it is safe to reset all the subsystems before pressing this button to continue.