Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-09-26
Astronomy and Astrophysics
Astrophysics
8 pages, 9 figures, accepted for publication in PASJ (Hinode Special issue)
Scientific paper
To understand the physical mechanisms for activity and heating in the solar atmosphere, the magnetic coupling from the photosphere to the corona is an important piece of information from the Hinode observations, and therefore precise positional alignment is required among the data acquired by different telescopes. The Hinode spacecraft and its onboard telescopes were developed to allow us to investigate magnetic coupling with co-alignment accuracy better than 1 arcsec. Using the Mercury transit observed on 8 November 2006 and co-alignment measurements regularly performed on a weekly basis, we have determined the information necessary for precise image co-alignment and have confirmed that co-alignment better than 1 arcsec can be realized between Solar Optical Telescope (SOT) and X-Ray Telescope (XRT) with our baseline co-alignment method. This paper presents results from the calibration for precise co-alignment of CCD images from SOT and XRT.
DeLuca Edward E.
Ichimoto Kiyoshi
Kano Ryohei
Katsukawa Yukio
Lundquist Loraine L.
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