像素到像素变化的空间统一性和时间稳定性在迷你SiTian CMOS探测器中
Guozhen Hu1,2,3, Linying Mi4,5, Kai Xiao6,7
1Department of Physics, Hebei Normal University, Shijiazhuang, 050024, China.
Scientific reports
|November 20, 2025
概括
索尼IMX455CMOS探测器中的像素对像素的变化在时间和空间上是稳定的. 这项研究为精确的天文光度测量提供了纠正策略,这对于未来的大规模天空调查至关重要.
科学领域:
- 天文学和天体物理学
- 仪器仪表和技术 仪器仪表和技术
背景情况:
- 高精度平面场校正对于精确的天文光度测量至关重要.
- 像素对像素的变化校正是平面场的关键组成部分.
研究的目的:
- 量化评估索尼IMX455CMOS探测器中像素对像素变化的时间稳定性和空间统一性.
- 开发一种普遍适用的像素对像素变化校正策略.
主要方法:
- 使用了迷你西提亚仪器的平面场图像.
- 在索尼IMX455 ZWO ASI6200MM Pro CMOS探测器中分析了像素对像素的变化.
- 研究了binning和像素响应相关性的影响.
主要成果:
- 像素对像素的变化通常为~0.365%,时间稳定性在一年内优于0.1%.
- 确定了~0.006%的稳定,时间不变的空间不均.
- 性能与e2v CCD检测器进行比较.
结论:
- 索尼IMX455 CMOS探测器表现出极好的像素级稳定性.
- 开发的校正策略为未来的天文调查中精确光度性能提供了战略见解.
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