Comprehensive Determination of the Hinode/EIS Roll Angle

被引：4

作者：

Pelouze, Gabriel ^{[1
]}

Auchere, Frederic ^{[1
]}

Bocchialini, Karine ^{[1
]}

Harra, Louise ^{[2
]}

Baker, Deborah ^{[2
]}

Warren, Harry P. ^{[3
]}

Brooks, David H. ^{[4
]}

Mariska, John T. ^{[5
]}

机构：

[1] Univ Paris Sud, Univ Paris Saclay, CNRS, Inst Astrophys Spatiale, Bat 121, F-91405 Orsay, France

[2] Univ Coll London, Mullard Space Sci Lab, Dorking KT22 9XF, Surrey, England

[3] Naval Res Lab, Div Space Sci, Washington, DC 20375 USA

[4] George Mason Univ, Coll Sci, 4400 Univ Dr, Fairfax, VA 22030 USA

[5] George Mason Univ, Dept Phys & Astron, 4400 Univ Dr, Fairfax, VA 22030 USA

来源：

SOLAR PHYSICS | 2019年 / 294卷 / 05期

关键词：

Hinode; EIS; Instrumental effects; Instrumentation and data management; Spectrum; ultraviolet; TELESCOPE; MISSION; XRT;

D O I：

10.1007/s11207-019-1451-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new coalignment method for the EUV Imaging Spectrometer (EIS) on board the Hinode spacecraft. In addition to the pointing offset and spacecraft jitter, this method determines the roll angle of the instrument, which has never been systematically measured, and which is therefore usually not corrected. The optimal pointing for EIS is computed by maximizing the cross-correlations of the Fexii 195.119 angstrom line with images from the 193 angstrom band of the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO). By coaligning 3336 rasters with high signal-to-noise ratio, we estimate the rotation angle between EIS and AIA and explore the distribution of its values. We report an average value of (-0.387 +/- 0.007)degrees. We also provide a software implementation of this method that can be used to coalign any EIS raster.

引用

页数：10

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