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The Piranha XL XDR Camera
close and then move to 8 rows. Ensure that the 8 rows is also Flat Fielded to the same
target as 12 rows.
DN
Pixel #
200
100
16352
Pixel #
200
100
16352
DN
Pixel #
200
100
16352
Pixel #
200
100
16352
Pixel #
200
100
16352
Line Profile of White/Illuminated Area
Flat Field to a Target of 200DN
Adjust Camera in Scan Direction Towards Black/
White Transition Until Line Center is 100DN
Adjust Camera Rotation To Make Line Profile Flat
Adjust Camera In Scan Direction To Bring Line
Flat Profile to 100DN
Figure 10 Alignment Method
This method is not effective for CCD TDI cameras with many stages as there is insufficient
sensitivity. Area mode imaging is required. Single line cameras would be too sensitive.
However, the Piranha XL camera has the right number of rows to make this simple alignment
method practical.