Abstract
The Long Slit Spectrograph is one of instruments onboard WSO-UV, a multi-national space astronomy project led by Russia. According to the report, both the FUV and the NUV channels of LSS choose MCP detector in the focal plane and the detector will be read out using the charge induction technique. According to the desired performance, Vernier anode will be one of the optimum readout schemes. In this paper, the structure and parameters of FUV detector and NUV detector have been basically determined. The decode principle and design of Vernier anode are introduced in detail. Preliminary experimental results show that decoding algorithm and design of Vernier anode are correct, and reveals a spatial resolution superior to 100μm according to the resolution test results. Ways to improve the imaging performance were proposed.
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