Stereo Scan 440 - DCU

1.20. Tilt Compensation
Introduction
This option allows the image to be conected for the foreshortening effect of
scanning a tilted specimen. At high tilt angles the beam scans more of the
specimen in the tilted direction giving the image a squashed appearance. By
resizing the scans in the tilt direction this effect can be eliminated.
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Frame
Distance
" The important angle is the angle of the specimen surface to the horizontal,
which may be different to the stage tilt angle (if the specimen is not flat).
Operation
Selection
Tilt compensation is selected from the Rotate I Tilt option on the Scanning
menu. Tilt compensation is enabled by selecting the check box.
Controls
The compensation angle is adjusted using the slider bar on the Rotate I Tilt
panel. It is also possible to enter the exact value by double clicking on the tilt
compensation value on the Rotate I Tilt panel.
Procedures
Tilt compensation should be selected when viewing samples at high angles of tilt.
The angle of compensation should be adjusted until the nonnal aspect ratio of the
specimen is restored.
Stereoscan 440 Operator Manual