SVOM/VT: Flight Model Verification and Pre-launch Testing
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866915960793858048 |
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| author | Zhang, Jian Fan, Xue-Wu Zou, Gang-Yi Qiu, Yu-Lei Gao, Wei Wang, Wei Wang, Chen-Jie Qi, Ning Deng, Jin-Song Dan, Li-Jun Pan, Yue Huang, Chao Du, Yun-Fei Ren, Guo-Rui Sun, Zhong-Han Wang, Feng-Tao Li, Wei Li, Bao-Peng Shen, Chao Chen, Peng-Fei Chen, Kun Zhao, Hui Chang, Ming Wang, Tao Xin, Li-Pin Wei, Jian-Yan |
| author_facet | Zhang, Jian Fan, Xue-Wu Zou, Gang-Yi Qiu, Yu-Lei Gao, Wei Wang, Wei Wang, Chen-Jie Qi, Ning Deng, Jin-Song Dan, Li-Jun Pan, Yue Huang, Chao Du, Yun-Fei Ren, Guo-Rui Sun, Zhong-Han Wang, Feng-Tao Li, Wei Li, Bao-Peng Shen, Chao Chen, Peng-Fei Chen, Kun Zhao, Hui Chang, Ming Wang, Tao Xin, Li-Pin Wei, Jian-Yan |
| contents | This paper presents pre-launch testing and calibration results for the SVOM/VT (Space-based Variable Objects Monitor, Visible Telescope) Flight Model (FM), validating its performance under simulated space conditions through thermal vacuum cycling, energy concentration analysis, stray light suppression, and CCD/electronics calibrations (gain, noise, quantum efficiency). The results confirm full compliance with design requirements: stray light suppression achieves point-source transmittance $<10^{-7}$ at $30^\circ$ off-axis, thermal control maintains stable CCD temperatures ($-75^\circ$C for the red channel, $-65^\circ$C for the blue channel), and detection sensitivity meets the limiting magnitude of 22.50 (SNR $>$ 3 with 300 seconds exposure). Early in-orbit tests further validate performance, yielding limiting magnitudes of 22.70 (V-band, red) and 22.78 (blue), consistent with pre-launch specifications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_24268 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | SVOM/VT: Flight Model Verification and Pre-launch Testing Zhang, Jian Fan, Xue-Wu Zou, Gang-Yi Qiu, Yu-Lei Gao, Wei Wang, Wei Wang, Chen-Jie Qi, Ning Deng, Jin-Song Dan, Li-Jun Pan, Yue Huang, Chao Du, Yun-Fei Ren, Guo-Rui Sun, Zhong-Han Wang, Feng-Tao Li, Wei Li, Bao-Peng Shen, Chao Chen, Peng-Fei Chen, Kun Zhao, Hui Chang, Ming Wang, Tao Xin, Li-Pin Wei, Jian-Yan Instrumentation and Methods for Astrophysics This paper presents pre-launch testing and calibration results for the SVOM/VT (Space-based Variable Objects Monitor, Visible Telescope) Flight Model (FM), validating its performance under simulated space conditions through thermal vacuum cycling, energy concentration analysis, stray light suppression, and CCD/electronics calibrations (gain, noise, quantum efficiency). The results confirm full compliance with design requirements: stray light suppression achieves point-source transmittance $<10^{-7}$ at $30^\circ$ off-axis, thermal control maintains stable CCD temperatures ($-75^\circ$C for the red channel, $-65^\circ$C for the blue channel), and detection sensitivity meets the limiting magnitude of 22.50 (SNR $>$ 3 with 300 seconds exposure). Early in-orbit tests further validate performance, yielding limiting magnitudes of 22.70 (V-band, red) and 22.78 (blue), consistent with pre-launch specifications. |
| title | SVOM/VT: Flight Model Verification and Pre-launch Testing |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2604.24268 |