论文标题
Astrosat上的超紫色成像望远镜的其他校准
Additional Calibration of the Ultra-Violet Imaging Telescope on board AstroSat
论文作者
论文摘要
Tandon等人先前报道了超紫色成像望远镜（UVIT）的初始校准结果。 （2017）。前面报告的结果基于地面校准以及轨道中的第一个观察结果。来自地面校准的一些其他数据以及来自更多轨道观察结果的数据已用于改善结果。特别是，已经使用了来自轨内观察结果的大量新数据来获得（a）新的光度校准，包括（i）零点（ii）（ii）平面（iii）饱和度，（b）敏感性变化（C）近乎超级紫罗兰（NUV； 2000-3000- 3000 - 3000 Angstroms）和Extra and offera anda anda-grops grops grops ofla-vost; 13000-1300 topla）扩散功能和（e）包括失真的天文校准。在过去的三年中获得的数据显示，紫外线的持续性能持续良好，而两个紫外线通道的灵敏度均未降低。
Results of the initial calibration of the Ultra-Violet Imaging Telescope (UVIT) were reported earlier by Tandon et al. (2017). The results reported earlier were based on the ground calibration as well as the first observations in orbit. Some additional data from the ground calibration and data from more in-orbit observations have been used to improve the results. In particular, extensive new data from in-orbit observations have been used to obtain (a) new photometric calibration which includes (i) zero-points (ii) flat fields (iii) saturation, (b) sensitivity variations (c) spectral calibration for the near Ultra Violet (NUV; 2000 - 3000 Angstroms) and far Ultra-Violet (FUV; 1300 - 1800 Angstroms) gratings, (d) point spread function and (e) astrometric calibration which included distortion. Data acquired over the last three years show continued good performance of UVIT with no reduction in sensitivity in both the UV channels.
