Oversampled PSFlets at 1123.7 nm reconstructed from monochromatic laser images like that shown in Fig. 1 and normalized to unit intensity after pixel sampling. The detector is divided into 25 regions, each panel corresponding to the associated location on the detector: the top left PSFlet corresponds to the top left corner of the detector, etc. A 3 × 3 pixel grid is shown as a size comparison. Similar libraries are created at the other three calibration wavelengths and included with the pipeline. The oversampled PSFlets can be used to construct a model of the pixellated microspectra corresponding to monochromatic or broadband light imaged by the lenslet array. The six diffraction spikes result from the hexagonal lenslet geometry, while the PSFlet shapes are extremely homogeneous across the FoV and give no indications of a changing focus.