Changes
/* Focusing The Spectrograph - running a Hartmann sequence */
* Select the ''Auto'' tab and enter the parameters for the Hartmann sequence: 3.6 for the ''initial focus position'', 0.05 for the ''focus increment'' and 9 for the number of ''steps'' - with the system still set up as it was for the test arc (lamp on, arc mirror in beam), click ''Run''.
* The slit width will automatically be set to 1.05" and the exposure type will switch to HARTMANN, then the GUI will grey out and not be available during the focus sequence (although you will see the ''Current Camera Focus'' field changing and the Hartmann shutters indicate ''Moving''.
* On completion of the sequence: in the SpUpNIC Quick-Look GUI, in the log box to the left right of the spectrum display window, you will see a list of focus positions and their corresponding pixel shifts. Best focus corresponds to a shift of zero.
* Enter the best focus into the ''Requested Camera Focus'' box on the SpUpNIC Control GUI's ''Instrument Setup'' pane and click ''Go''.
* The Hartmann sequence ends with the shutter out of the beam, but for some reason it sends the slit width to zero! So select the desired slit width in the ''Instrument Setup'' pane and click ''Go''. Check that it goes to the required position, click ''Go'' again if it does not do it the first time.
