A New Serial-direction Trail Effect in CCD Images of the Lunar-based Ultraviolet Telescope
文献类型：期刊论文
| 作者 | Wu, C.1,2 ; Deng, J. S.1,2; Guyonnet, A.3,4,5; Antilogus, P.3,4,5; Cao, L.1,2; Cai, H. B.1,2; Meng, X. M.1,2; Han, X. H.1,2; Qiu, Y. L.1,2; Wang, J.1,2
|
| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
 |
| 出版日期 | 2016-10-01 |
| 卷号 | 128期号:968 |
| 关键词 | techniques: image processing |
| 英文摘要 | Unexpected trails have been seen subsequent to relative bright sources in astronomical images taken with the CCD camera of the Lunar-based Ultraviolet Telescope (LUT) since its first light on the Moon's surface. The trails can only be found in the serial-direction of CCD readout, differing themselves from image trails of radiation-damaged space-borne CCDs, which usually appear in the parallel-readout direction. After analyzing the same trail defects following warm pixels (WPs) in dark frames, we found that the relative intensity profile of the LUT CCD trails can be expressed as an exponential function of the distance i (in number of pixels) of the trailing pixel to the original source (or WP), i.e., exp(alpha i + beta). The parameters alpha and beta seem to be independent of the CCD temperature, intensity of the source (or WP), and its position in the CCD frame. The main trail characteristics show evolution occurring at an increase rate of similar to(7.3 +/- 3.6) x 10(-4) in the first two operation years. The trails affect the consistency of the profiles of different brightness sources, which make smaller aperture photometry have larger extra systematic error. The astrometric uncertainty caused by the trails is too small to be acceptable based on LUT requirements for astrometry accuracy. Based on the empirical profile model, a correction method has been developed for LUT images that works well for restoring the fluxes of astronomical sources that are lost in trailing pixels. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | CHARGE-TRANSFER INEFFICIENCY ; HUBBLE-SPACE-TELESCOPE ; PIXEL-BASED CORRECTION ; ADVANCED CAMERA |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000387113500015 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6860]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Key Lab Space Astron & Technol, Natl Astron Observ, Beijing 100012, Peoples R China 3.CNRS IN2P3, LPNHE, 4 Pl Jussieu, F-75252 Paris 05, France 4.Univ Paris 06, 4 Pl Jussieu, F-75252 Paris 05, France 5.Univ Paris 07, 4 Pl Jussieu, F-75252 Paris 05, France |
| 推荐引用方式 GB/T 7714 | Wu, C.,Deng, J. S.,Guyonnet, A.,et al. A New Serial-direction Trail Effect in CCD Images of the Lunar-based Ultraviolet Telescope[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2016,128(968). |
| APA | Wu, C..,Deng, J. S..,Guyonnet, A..,Antilogus, P..,Cao, L..,...&Li, G. W..(2016).A New Serial-direction Trail Effect in CCD Images of the Lunar-based Ultraviolet Telescope.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,128(968). |
| MLA | Wu, C.,et al."A New Serial-direction Trail Effect in CCD Images of the Lunar-based Ultraviolet Telescope".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 128.968(2016). |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。