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Quemesa — New high resolution bottom mount camera for TEM

High sensitivity and contrast at optimal resolution are the ultimate goals for any TEM camera. To achieve that, the scintillator has to be optimized for the electron-phosphor interaction volume to obtain the maximum signal. The Quemesa, the new 11 Megapixel, on-axis TEM camera by Olympus Soft Imaging Solutions, employs a scintillator perfectly matched to the thickness and pixel size of this interaction volume, ensuring highest sensitivity and excellent contrast.

The fiber-optically coupled and water-cooled Quemesa sets new standards for resolution, uniformity, contrast, sensitivity and speed for 11 MegaPixel bottom-mounted TEM cameras. The highly sensitive CCD chip provides 4008 x 2664 pixel resolution with 14-bit dynamic range. With an effective pixel size of 18 µm x 18 µm, the Quemesa offers a field of view of 72 mm x 48 mm, about the size of a photo plate. The camera offers more than 12 frames per second in the high speed mode and 2.1 frames per second in high quality, full resolution mode. Binning and partial read-out modes can be used for navigating the sample, find features of interest and to adjust microscope parameters. At any magnification, this camera provides superb resolution, dynamic range and sensitivity.