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
备注:
Accepted for publication in Journal of Astrophysics & Astronomy, 11 pages, 10 figures, 1 table
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.
Nine years of UVIT: assessing sensitivity variation
Indian Institute of Astrophysics(印度天体物理研究所);Inter-University Center for Astronomy and Astrophysics(大学间天文与天体物理中心);Tata Institute of Fundamental Research(塔塔基础研究所)
Characterising transiting exoplanets at long orbital period: lessons learned for PLATO from 10 years of monitoring the HIP41378 system
Univ. Grenoble Alpes(格勒诺布尔阿尔卑斯大学);CNRS(法国国家科学研究中心);IPAG(天体物理学与行星学研究所);Aix Marseille Univ(艾克斯-马赛大学);CNES(法国国家空间研究中心);LAM(拉奥朗实验室);Department of Astronomy, University of Geneva(日内瓦大学天文系)
Investigating operation of the Internet in orbit: Five years of collaboration around CLEO
Cisco Systems Global Government Solutions Group(思科系统全球政府解决方案集团);Surrey Satellite Technology Ltd, University of Surrey(萨里卫星技术有限公司,萨里大学);NASA Glenn Research Center(美国国家航空航天局格伦研究中心);Verizon Federal Network Systems(威瑞森联邦网络系统)