Main Mission (named "Main Mission Control" in Ring Around The Moon) is the control room which monitors and supervises all Moonbase operations. Later in Year 2, operations moved to Command Centre. The "big screen" is the large view screen at the front of these rooms. Both are staffed by members of all organisational sections. Normal staff levels are about double the number of desks: various staff are employed looking at the computer panels (this was Kano's position until he got a desk) or walking round carrying pieces of colourful plastic. Minimum staff levels are two or less (Black Sun, Space Brain).
The layout and lighting of Main Mission changed through the series. In early episodes, the panels are illuminated white. In Alpha Child they became green for six episodes. In End Of Eternity only they are yellow. In War Games and The Last Enemy they are both white and red. In the remaining six episodes they are white, except for some scenes in Space Brain when they are green.
In Another Time, Another Place, we see Main Mission stripped of all electronics. The camera pans over the deserted room, as shown in this panorama here.
Black Sun: early layout
Earthbound: the steps to the windows are gone, and the desks open out slightly; but Kano still does not have a desk.
Another Time, Another Place: the wider layout
The later layout with Kano's desk, which first appeared in Missing Link.
Space Brain: including Kano's desk
The desks move forwards and backwards in each episode, and sometimes foreground desks even disappear for particular shots.
Paul's desk has a flip-up compartment; here used to open an airlock. It has various other functions
Kano's desk is has a slightly different design. In front there is a small screen (never seen in use). The flat desk has rows of red and white buttons. The sides are illuminated, and there are print-out slots in front.
In End Of Eternity, Balor rips up Kano's desk.
Copyright Martin Willey