Tecnai on-line help manual -- Options - UT Southwestern

<strong>Tecnai</strong> on-line help Options 42Options Software version 2Exposure modification can be one of the following:• Shift the whole montage• Insert a new exposure (after a cross has been positioned with a double-click)• Delete an existing exposure (after a cross has been positioned with a double-click; by clicking on ahyperlabel and selecting Delete; or Deleting one ore more exposures from a list. In the list multipleexposures can be selected by Click - Shift-Click or Click - Ctrl+Click).Shifting the whole montage can be done in various ways:• Click the left-hand mouse button somewhere on the montage and drag the corresponding montagepoint to a new location. The new montage will be redrawn as soon as the mouse button is released.• Use the cursor (arrow) keys to move the montage up, down, left or right. Regular cursor keys moveone pixel, Pressing the Control (Ctrl) simultaneously with the cursor key will shift by ten pixels.3.13 Automatic exposureAfter a photomontage has been defined, it is possible to have the program record the whole montageautomatically. When Automatic exposure is started, the following dialog is brought up.The Automatic exposure progress dialog.At the top the software indicates the progress of the procedure (in this case no exposures have beenrecorded yet). An estimated total duration is given. This is subject to considerable uncertainty becausevarious procedures that can be time-consuming (stage movement, screen up/down) are only accountedfor in a general overhead on top of the exposure time.The Sound on checkbox allows changing the Sound option during the actual procedure.Underneath the progress bar various values are listed such as the currently available exposure stock,exposure number and exposure time. For the exposure time two options exist if automatic exposure timeis selected on the microscope. By default the software simply uses the exposure time as currentlymeasured (this implies that during the whole exposure sequence the viewing screen will remain up). Ifthe Measure for each checkbox is checked, the screen is lowered for each exposure to allow themicroscope to measure the exposure time for each individual exposure. Since the small focussing is notmotorized, the exposure time will always be read off the main screen then.Finally at bottom right there are two selections (for plate camera only) that allow automatic modificationof the film text on the plate. If the first is checked, a line is entered in the film text with 'Montage exposure#' where # is replaced by the sequence number of the exposure. If the second is checked a line is