44 7.3 Issue 1.3 LUCIFER User Manual Interactive Observing The instrument can be fully controlled by three GUIs: the instrument- (Fig. 19), telescope- (Fig. 21) and readout-GUI (Fig. 22). They all use the same kind of process: by pressing the commit button after selecting the desired setup, the software collects all properties from the GUI and builds up a setup which will be send to the appropriate software service and from there to the hardware. The current setup is highlighted in green, while the configuration selected to be set next appears in yellow. This allows the user to track the changes of the instrument set-up. When a set-up is being performed, the full panel turns yellow. Note: Should accidently a wrong filter, camera or grating have been selected, press the current green button to discard your previous selection. Figure 19: The LUCIFER instrument control GUI allows classical access to all relevant components of the instrument. 7.3.1 The Instrument Control GUI This GUI gives the user access to all instrument relevant parameters of LUCIFER. It consists of several sub panels which are explained here in more detail.