Changes
/* The Observing Floor */
indicator will illuminate when the panel is active. To open/close the dome, push and hold the appropriate button until the shutters stop moving and you hear a beep. To raise/lower the windblind, push and hold the appropriate button until the blind reaches the desired height. '''Do not raise the windblind while pointing into the wind; first rotate the dome by 180°, raise the blind then rotate back. '''There is also a switch for the upper dome lights.
* '''Yellow hand paddle on the wall facing the stairs. '''As of October 2011, '''the yellow paddle is no longer in use.''The Observing Floor Control Panel should be used to open/close the dome and raise/lower the windblind.
* '''Dome flat lamp switch.''' On the North wall, just above and left of the monitor, is a dimmer switch that controls the incandescent lamp used for taking dome flats (see Section [[40" / 1.0m|Filters]] ref{sec-domeflats}).
* A red '''balance weight''' on a rope, which can be hung from an appropriate place below the primary mirror cell if the telescope jumps while tracking (usually when tracking around the zenith).
* Tall and short '''wheeled ladders''' for hanging the weight and for accessing the reset buttons on the Merlin transputer crates. Make sure the ladders are clear of the telescope while observing (the taller ladder is usually stored on the West side of the observing floor under the catwalk, the other is pushed to the East side of the North pier).
