원자외선 분광기 FIMS 자료의 자세정보 및 노출시간 보정

• Published in: Journal of astronomy and space sciences pp. 399 - 416
• Main Authors: 선광일, 이대희, 박장현, 남욱원, 한원용, 민경욱, 육인수, 진호, 유광선, 신종호, Eric Korpela, Kaori Nishikida, Jerry Edelstein
• Format: Journal Article
• Language: Korean
• Published: 한국우주과학회 01.12.2004
• Subjects: 천문학
• ISSN: 2093-5587; 2093-1409

The FIMS (Far-ultraviolet IMaging Spectrograph), the main payload onboard the first Korean science satellite STSAT-1, has performed various observations since its launch on September 2003. It has been found that the attitude informations provided by spacecraft bus system have a time offset problem, and the problem has been extensively studied. After the time offset correction, boresight offsets between FIMS fields of view, of long and short wavelength bands, respectivley, and spacecraft attitude systems, which are mainly due to alignment error between the FIMS and spacecraft mechanical systems, were calculated through the observations of well known calibration targets. Monthly status and precision of the attitude information are also described. Correction methods for spatially variable exposure, intrinsic to FIMS data, are discussed. These results are essential to the FIMS data analysis, and will be used as references for subsequent studies on more accurate attitude corrections. KCI Citation Count: 0