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

<strong>Tecnai</strong> on-line help Options 50Options Software version 23.16.10 Help menuThe Help menu contains two items, Show and About. Selecting Show (or pressing F1) will display thisHelp file in the <strong>Tecnai</strong> User Interface. About will display the About TEM Photomontage dialog listing thecurrent version number of the software. When reporting bugs, always include the version number in thereport.3.17 Control optionsThe software supports a range of options, defined in the Control options dialog. Options are stored asset for each user separately and recalled upon restart. Options can be saved to file and reloaded.Plate typeNot relevant for CCD montage.CCDWith CCD acquisition, there are two ways to handle the images:• Collect the images into a data series in TIA. This series can then be used later as the basis forgenerating the montage image. The number of images strongly depends on image size and memoryavailable.• Collect the images as a file series. Each image is saved to file but not kept in a data series in TIA.While there is no limit to the number of images (except hard-disk space), you have to use othersoftware to assemble the images into a single montage image.• The CCD Store images only is disabled if you have already acquired images. To switch betweendata series in TIA and files, you have to redefine the montage (File, New montage).OverlapThe overlap between the exposures is the percentage of the horizontal or vertical axis that must becommon to both exposures to ensure fit of the photomontage without gaps. The overlap can be seteither automatically or at a fixed value. If done automatically the program will adjust the overlap for themagnification used.Note: It is allowed to define a negative fixed overlap value. In that case the individual exposures will notoverlap but instead be spaced apart. In this way an area can be covered by a regular grid of exposureswithout requiring them to fill the whole area. This function can be used for example for statisticalanalysis.