星载 AstroSat 紫外成像望远镜的附加定标
天体物理仪器与方法
2020-03-25 v1
摘要
Tandon 等人(2017)此前报道了紫外成像望远镜(UVIT)的初期定标结果。此前报道的结果基于地面定标以及首批在轨观测。我们利用了一些额外的地面定标数据和更多在轨观测数据来改进结果。特别是,利用大量在轨观测新数据得到了以下结果:(a)新的测光定标,包括(i)零点(ii)平场(iii)饱和;(b)灵敏度变化;(c)近紫外(NUV;2000–3000 埃)和远紫外(FUV;1300–1800 埃)光栅的光谱定标;(d)点扩散函数;(e)包含畸变的天体测量定标。过去三年获取的数据表明 UVIT 持续性能良好,两个紫外通道的灵敏度均未下降。
引用
@article{arxiv.2002.01159,
title = {Additional Calibration of the Ultra-Violet Imaging Telescope on board AstroSat},
author = {S. N. Tandon and J. Postma and P. Joseph and A. Devaraj and A Subramaniam and I. V. Barve and K. George and S. K. Ghosh and V. Girish and J. B. Hutchings and P. U. Kamath and S. Kathiravan and A. Kumar and J. P. Lancelot and D. Leahy and P. K. Mahesh and R. Mohan and S. Nagabhushana and A. K. Pati and N. Kameswara Rao and K. Sankarasubramanian and S. Sriram and C. S. Stalin},
journal= {arXiv preprint arXiv:2002.01159},
year = {2020}
}
备注
15 pages, 8 figures, Accepted for publication in Astronomical Journal