| Title | Atmospheric extinction coefficients and night sky brightness at the Xuyi Observation Station |
| Authors | Zhang, Hui-Hua Liu, Xiao-Wei Yuan, Hai-Bo Zhao, Hai-Bin Yao, Jin-Sheng Zhang, Hua-Wei Xiang, Mao-Sheng |
| Affiliation | Peking Univ, Dept Astron, Beijing 100871, Peoples R China. Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China. Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China. |
| Keywords | techniques: astronomical observing sites atmospheric extinction coefficients night sky brightness BATC SURVEY MAUNA-KEA CALIBRATION TELESCOPE PHOTOMETRY RELEASE MODEL |
| Issue Date | 2013 |
| Publisher | 中国天文和天体物理学报英文版 |
| Citation | RESEARCH IN ASTRONOMY AND ASTROPHYSICS.2013,13,(4),490-500. |
| Abstract | We present measurements of the optical broadband atmospheric extinction coefficients and the night sky brightness at the Xuyi Observation Station of Purple Mountain Observatory. The measurements are based on CCD imaging data taken in the Sloan Digital Sky Survey's g, r and i bands with the Xuyi 1.04/1.20m Schmidt Telescope for the Xuyi Schmidt Telescope Photometric Survey of the Galactic Anti-center (XSTPS-GAC), the photometric part of the Digital Sky Survey of the Galactic Anti-center (DSS-GAC). The data were collected during more than 140 winter nights from 2009 to 2011. We find that the atmospheric extinction coefficients for the g, r and i bands are 0.69, 0.55 and 0.38 mag/airmass, respectively, based on observations taken on several photometric nights. The night sky brightness determined from images with good quality has median values of 21.7, 20.8 and 20.0 mag arcsec(-2) and reaches 22.1, 21.2 and 20.4 mag arcsec(-2) under the best observing conditions for the g, r and i bands, respectively. The relatively large extinction coefficients compared with other good astronomical observing sites are mainly due to the relatively low elevation (i.e. 180 m) and high humidity at the station. |
| URI | http://hdl.handle.net/20.500.11897/296666 |
| ISSN | 1674-4527 |
| DOI | 10.1088/1674-4527/13/4/010 |
| Indexed | SCI(E) 中国科技核心期刊(ISTIC) 中国科学引文数据库(CSCD) |
| Appears in Collections: | 物理学院 科维理天文与天体物理研究所 |
