The QSI 532 camera employs a 3.2 megapixel Kodak Enhanced Response full-frame CCD image sensor with microlens technology. The high quantum efficiency, wide dynamic range and low noise performance make the 532 ideally suited to a broad range of demanding astronomical, scientific and industrial imaging applications. The KAF-3200ME sensor has a photoactive array of 2184W x 1472H pixels. It has excellent quantum efficiency between 350nm and 1000nm with significant enhancement at the blue end of the spectrum. Low dark current and high pixel charge capacity result in a dynamic range exceeding 77db. The sensor employs a true two-phase charge transfer technology with a transparent gate that significantly increases optical response compared to traditional front illuminated full frame sensors. Micro lenses cover the surface of the CCD and focus the light through the transparent gate to further increase optical response. Mechanical Shutter The Model 532s incorporates the internal mechanical shutter in the 'mid-size' camera body configuration . The shutter is not only used for timing exposures, but can be left closed to produce 'dark frames' for subsequent image processing. Exposures can range from 0.03 seconds to 240 minutes.