Alt Systems Inc.'s cooled, slow-scan CCD camera with 4k 3 4k resolution is now available from Catalina Scientific Corp. The company says the camera represents a 400% increase in resolution over the previous generation of high-performance cameras. It can digitize to 12- or 14-bit dynamic range at a readout rate of 1 or 5 megapixels per second. It can read out 16 megapixel images in less than 5 s. An optional PCI-bus interface board and image acquisition software are available. The instrument is suited for low-light environments that require high resolution, such as medical imaging, astronomy, aerial photography and oceanography.