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Spectrometer
3. The calibration procedure will map pixel numbers to wavelength using a polynomial fit. Hover
the mouse cursor over a feature to identify the pixel number and enter this into the 'Pixel'
column. Enter the wavelength of this feature in the 'Wavelength (nm)' column. More rows can
be added, or current rows removed using the 'Add' and 'Delete' buttons respectively. The graph
can be zoomed and scrolled in the same way as the main window to help identify the pixels.
Highlighting a box in the 'Pixel' column and then double clicking on the graph will automatically
populate the box with the curser location. At least 2 points should be used for calibration, with
more points typically giving a better fit. The pixel numbers and wavelengths do not need to be
in ascending order; however, the data pairs must be monotonic (increasing pixel number
results in increasing wavelength).
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Figure 9.6. Calibration window with CFL spectrum.
Figure 9.7. Known wavelengths associated to pixels.
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User Manual
Ossila Limited © 2023
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