Current status of the Suzaku pointing error

被引：0
|
作者：
Maeda, Yoshitomo [1 ]
机构：
[1] JAXA, ISAS, Chuo Ku, Sagamihara, Kanagawa 2525210, Japan
来源：
SUZAKU 2011: EXPLORING THE X-RAY UNIVERSE: SUZAKU AND BEYOND | 2012年 / 1427卷
关键词：
suzaku; attitude;
D O I：
10.1063/1.3696185
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Since launch, the 3-axis attitude control using the Inertial Reference Unit (IRU) had been done with the combination of IRU-X/Z/S1. Recently, the output of the IRU-S1 had become noisy. We then switched over from the IRU-S1 to S2 at 03: 21 on 18th, December 2009. Since the switch, it was found that the accuracy of the attitude control and determination along the DET-X axis became worse than previous by roughly a factor of two, though it has been different from observation to observation. At June 15th, 2010, the other IRU-Y was activated not for the attitude control but for the determination. The activation recovers the pointing determination accuracy down to the level before the IRU-S1 was switched off.
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页数：2
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