Mapping distortion of detectors in UVIT onboard AstroSat observatory
详细信息 查看全文
- 作者：V Girish ; Shyam N. Tandon ; S. Sriram ; Amit Kumar ; Joe Postma
- 关键词：Distortions ; UV telescope and instrumentation ; UV imaging ; Distortion map
- 刊名：Experimental Astronomy
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：43
- 期：1
- 页码：59-74
- 全文大小：
- 刊物类别：Physics and Astronomy
- 刊物主题：Astronomy, Observations and Techniques; Statistics for Engineering, Physics, Computer Science, Chemistry and Earth Sciences;
- 出版者：Springer Netherlands
- ISSN：1572-9508
- 卷排序：43
文摘
Ultraviolet Imaging Telescope (UVIT) is one of the payloads onboard AstroSat, India’s first multi-wavelength Astronomy mission. UVIT is primarily designed to make high resolution images in wide field, in three wavelength channels simultaneously: FUV (130–180 nm), NUV (200–300 nm) and VIS (320–550 nm). The intensified imagers used in UVIT suffer from distortions, and a correction is necessary for these to achieve good astrometry. In this article we describe the methodology and calculations used to estimate the distortions in ground calibrations.