3.0 CCD Transfer Curves and PlutoCCD CCD Test Data . ... Charge Detection (e.g. Read Noise). ... 3.1.1 Charge Generation: Quantum Efficiency (QE Transfer Curve): A back-illuminated CCD is capable of detecting photons over a huge wavelength spectrum (1.0A to 11,000A). ... The Photon Transfer Curve (shown in Figure 3.2-1) simply plots noise as a function of signal for a population of CCD pixels. ... Linearity Full Well Transfer Curve PlutoCCD 9-micron back-illuminated CCD (T. Elliott-JPL) . ...