The SuperCOSMOS Sky Survey - II. Image detection, parameterization, classification and photometry

被引:187
作者
Hambly, NC
Irwin, MJ
MacGillivray, HT
机构
[1] Univ Edinburgh, Inst Astron, Wide Field Astron Unit, Edinburgh EH9 3HJ, Midlothian, Scotland
[2] Univ Cambridge, Inst Astron, Cambridge Astron Survey Unit, Cambridge CB3 0HA, England
关键词
methods : data analysis; techniques : image processing; techniques : photometric; astronomical data bases : miscellaneous; catalogues; surveys;
D O I
10.1111/j.1365-2966.2001.04661.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In this, the second in a series of three papers concerning the SuperCOSMOS Sky Survey, we describe the methods for image detection, parametrization, classification and photometry. We demonstrate the internal and external accuracy of our object parameters. Using examples from the first release of data, the South Galactic Cap survey, we show that our image detection completeness is close to 100 per cent to within similar to1.5 mag of the nominal plate limits. We show that for the B-J survey data, the image classification is externally >99 per cent reliable to B(J)similar to 19.5. Internally, the image classification is reliable at a level of >90 per cent to B(J)similar to 21, R similar to 19. The photometric accuracy of our data is typically similar to0.3 mag with respect to external data for m>15. Internally, the relative photometric accuracy in restricted position and magnitude ranges can be as accurate as similar to5 per cent for wen-exposed stellar images. Colours are externally accurate to sigma (B-R,R-I) similar to 0.07 at B(J)similar to 16.5, rising to sigma (B-RR-I) similar to 0.16 at B(J)similar to 20.
引用
收藏
页码:1295 / 1314
页数:20
相关论文
共 35 条
[1]  
BEARD SM, 1990, MON NOT R ASTRON SOC, V247, P311
[3]   COLOR EQUATIONS FOR THE UNITED-KINGDOM SCHMIDT TELESCOPE [J].
BLAIR, M ;
GILMORE, G .
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1982, 94 (560) :742-743
[4]  
BOYLE BJ, 1995, MON NOT R ASTRON SOC, V276, P33
[5]   THE WEIGHTED MEDIAN FILTER [J].
BROWNRIGG, DRK .
COMMUNICATIONS OF THE ACM, 1984, 27 (08) :807-818
[6]  
BUNCLARK PS, 1983, ESA SP, V201, P195
[7]   A quantitative evaluation of the galaxy component of the cosmos and APM catalogs [J].
Caretta, CA ;
Maia, MAG ;
Willmer, CNA .
ASTRONOMICAL JOURNAL, 2000, 119 (02) :524-535
[8]   PHOTOMETRY OF THE RICH CLUSTER OF GALAXIES 0004.8-3450 [J].
CARTER, D .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1980, 190 (01) :307-320
[9]   Faint UBVRI CCD sequences for wide-field surveys -: II.: UBVR sequences at δ =-30° [J].
Croom, SM ;
Ratcliffe, A ;
Parker, QA ;
Shanks, T ;
Boyle, BJ ;
Smith, RJ .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1999, 306 (03) :592-598
[10]   Photometric CCD sequences for calibration of the ESO/SERC atlas [J].
Cunow, B ;
Duemmler, R ;
Spiekermann, G ;
Ungruhe, R ;
Wargau, WF .
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1997, 125 (01) :71-73