Back-illuminated EMCCD Cameras With the back-illuminated iXonEM+, Andor have delivered a dedicated, truly high-end, ultrasensitive scientific camera platform, designed specifically to get the absolute best from back-illuminated EMCCD technology across all critical performance specs and parameters. Andor's vacuum-housed back-illuminated iXonEM EMCCD range is designed to ensure the absolute highest sensitivity from a quantitative scientific digital camera, particularly under dynamic measurement conditions (faster frame rates). Andor's vacuum-housing is critical to ensure complete protection of the back-illuminated sensor, such that it will not suffer QE performance degradation. The architecture of EMCCD sensors also render them extremely flexible. When harnessed effectively in the iXonEM , EMCCD technology can be applied in an entirely quantitative fashion to meet a wide variety of experimental requirements, ranging from single photon counting experiments through to slower scan, true 16-bit dynamic range measurements. The iXonEM is also equipped with patented pioneering technology that ensures the longest quantitative service life of any EMCCD, offering ultimate anti-ageing protection of the sensor and automated user-initiated recalibration of EMCCD gain.