arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2012.13525astro-ph.IM
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UVIT 5年在轨性能

In orbit performance of UVIT over the 5 years

S. K. Ghosh, P. Joseph, A. Kumar, J. Postma, C. S. Stalin, A. Subramaniam, S. N. Tandon, I. V. Barve, A. Devaraj, K. George, V. Girish, J. B. Hutchings, P. U. K… 展开作者

S. K. Ghosh, P. Joseph, A. Kumar, J. Postma, C. S. Stalin, A. Subramaniam, S. N. Tandon, I. V. Barve, A. Devaraj, K. George, V. Girish, J. B. Hutchings, P. U. Kamath, S. Kathiravan, J. P. Lancelot, D. Leahy, P. K. Mahesh, R. Mohan, S. Nagabhushana, A. K. Pati, N. Kameswara Rao, K. Sankarasubramanian, P. Sreekumar, S. Sriram

摘要:

在过去的5年里,UVIT已经完成了500多个提案的观测,其中有800个独特的点。此外,还进行了定期的计划监测观测,并通过对观测结果的分析,对与紫外线照射技术在轨性能有关的各种关键参数进行了量化。UV通道的灵敏度保持稳定,表明没有潜在分子污染的影响,证实了为避免污染而实施的所有方案的充分性。多年来PSF的质量证实了热控制措施的充分性。在性能验证(PV)阶段获得的早期校准已进一步修订,以获得更细微的影响。这些包括具有更高精度的平场和探测器失真。UVIT的操作也通过在轨经验得到了发展,例如,调整操作顺序,从明亮物体检测(BOD)关机恢复的协议,BOD阈值的参数等。最后,带电粒子撞击对电子设备的一些影响导致了定期重置的优化策略。近紫外线频道在其中一次行动中丢失。此处介绍了上述所有在轨经验。

英文摘要:

Over the last 5 years, UVIT has completed observations of more than 500 proposals with ~ 800 unique pointings. In addition, regular planned monitoring observations have been made and from their analysis various key parameters related to in orbit performance of UVIT have been quantified. The sensitivities of the UV channels have remained steady indicating no effect of potential molecular contamination confirming the adequacy of all the protocols implemented for avoiding contamination. The quality of the PSF through the years confirms adequacy of thermal control measures. The early calibrations obtained during the Performance Verification (PV) phase have been further revised for more subtle effects. These include flat fields and detector distortions with greater precision. The operations of UVIT have also evolved through in orbit experience, e.g. tweaking of operational sequencing, protocol for recovery from bright object detection (BOD) shutdowns, parameters for BOD thresholds, etc. Finally, some effects of charged particle hits on electronics led to opimised strategy for regular resetting. The Near-UV channel was lost in one of such operations. All the above in-orbit experiences are presented here.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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