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26 Kuro sCMOS Camera System Manual Issue 2
6.2.1 Mounting Kuro to a Spectrograph
When using Kuro for imaging applications, the orientation of the CCD within the
camera body typically does not require any special considerations or configuration by
the user.
However, for spectroscopic applications, knowing the orientation of the CCD within
the camera’s body is critical. When the Kuro is mounted to a spectrograph in its normal
orientation (i.e., with the four feet facing down,) the CCD within the camera body is
rotated by 90°. LightField automatically compensates for the rotated CCD using its
Online Correction
►
Orientation feature.
With spectroscopic applications, an ROI is often defined in order to maximize the rate
at which data are acquired and read out. This ROI is typically defined so that it spans the
entire width of the sensor (i.e., all available columns,) but reduces the number of rows
being read out. With Kuro, since the CCD is rotated by 90°, when defining an ROI, it is
important to realize that rows and columns are now transposed:
• Rows should be considered columns;
• Columns should be considered rows.
If the definition of an ROI does not compensate for the rotated CCD, no speed
advantage is achieved.
6.2.1.1 Rotating Kuro by 90°
When an experiment permits it, one way of compensating for the rotated CCD is to
actually rotate the Kuro camera by 90° when mounting it to the spectrograph. Doing so
simplifies the definition of an ROI since there is no resulting transposition of rows and
columns.
However, when Kuro is rotated 90° when mounted to the spectrograph, LightField will
not automatically detect this, and it is important that prior to acquiring data, Online
Correction
►
Orientation be configured accordingly.