Tuesday, May 18, 2010

e2V's CCD-based UV imager

As noted by image sensor world among others, e2V has designed and manufactured the UV imager in the Akatsuki Venus Climate Orbiter. The press release does not offer much technical info. It's actually not easy to track the instruments specs of this one, but the technical data of the different instruments can be found here. More info at that link:
UVI uses a UV-coated backthinned frame transfer Si-CCD with 1024 x 1024 pixels and the pixel size of 13 micron. The spatial resolution is ~16 km at apoapsis and ~6 km from the distance of 5 Rv. The fullwell of the CCD is 10^5 e- per pixel, and the signal-to-noise ratio is 120. The output is digitized with 12 bit A/D conversion. The total mass including the optics, CCD detector assembly and electronics is ~3.4 kg, and the power consumption is 9.4 W.

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