try:

                psfCandidate = algorithmsLib.makePsfCandidate(star, exposure)

            except Exception as err:

                self.log.warn("Failed to make a psfCandidate from star %d: %s" % (star.getId(), err))

                continue

            # The setXXX methods are class static, but it's convenient to call them on

            # an instance as we don't know Exposure's pixel type

            # (and hence psfCandidate's exact type)

            if psfCandidate.getWidth() == 0:

                psfCandidate.setBorderWidth(self.config.borderWidth)

                psfCandidate.setWidth(self.config.kernelSize + 2*self.config.borderWidth)

                psfCandidate.setHeight(self.config.kernelSize + 2*self.config.borderWidth)

            im = psfCandidate.getMaskedImage().getImage()

Box2I(Point2I(-2,1120),Extent2I(41,41)) doesn't fit in image 2048x4176...