Next: Results Up: Evaluation of Image Restoration Previous: Introduction . ... The PSF was computed by TinyTIM (Krist 1991) at ?, at center of CCD #1. Finally, the appropriate noise model for WF CCDs, including Poisson and readout (Gaussian) components, was added to the image. ... Algorithm sensitivity to PSF errors was evaluated by restoring the test image using both the original PSF, as well as another TinyTIM PSF, computed for a bluer star and situated pixels away from the the CCD center. ...