Notice that the Step and Glue slide bar control will expand or contract in length to indicate the number of scans that the
system must perform to acquire this data (see below). Note also that the acquire spectra overlap slightly. This allows the
Step and Glue algorithm to glue the spectra together.
It is also possible to easily change the centre wavelength about which the scan will be performed. This can be achieved
by either clicking on any part of the step and glue slide control bar (except the start and end wavelength indicators) and
dragging the wavelength bar to the required wavelength region. It can also be modied by “nudging” the slide control
bar. This is achieved by positioning the cursor to either side of the slide bar control and clicking the left or right mouse
button (see wavelength drive control section).
Note that it is not necessary for the grating control to be set at the required grating – the grating to be used is selected
using the grating selection box:
The scan is initiated by pressing the Acquisition button (camera icon) on the main Andor Solis toolbar. If the grating
specied in the grating selection box is different from the currently set grating the system will rst drive to the selected
grating before commencing the scan. If the background (Bg) correction box has been ticked an initial background will
also be acquired. Progress of the scan is indicated by the movement of the hatched region along the step and glue slide
control bar.
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