Abstract
We present coalignment calibration procedures for the X-ray Telescope (XRT) onboard the Hinode satellite. We performed not only an XRT stand-alone calibration, but also cross calibration using data from the Helioseismic and Magnetic Imager (HMI) and the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO). Several new methods we describe here may also be useful for the coalignment calibration of other instruments. We have developed a database of coalignment coefficients and software to access it, so that all XRT images can be easily and accurately overlaid onto the images from other instruments, especially AIA and HMI.
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Acknowledgements
We would like to thank the anonymous referee for the helpful comments. This work was supported by NASA under contract SP02H3901R from Lockheed-Martin to Montana State University, and contract NNM07AB07C with the Smithsonian Astrophysical Observatory. Hinode is a Japanese mission developed and launched by ISAS/JAXA, with NAOJ as domestic partner and NASA and STFC (UK) as international partners. It is operated by these agencies in co-operation with ESA and NSC (Norway). The HMI and AIA images are available by courtesy of NASA/SDO and the AIA, EVE, and HMI science teams. SDO is the first mission of NASA’s Living With a Star (LWS) Program.
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Yoshimura, K., McKenzie, D.E. Calibration of Hinode/XRT for Coalignment. Sol Phys 290, 2355–2372 (2015). https://doi.org/10.1007/s11207-015-0746-4
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DOI: https://doi.org/10.1007/s11207-015-0746-4