Improvement of SXT Image Alignment in Order to Obtain High-Resolution Temperature Maps

Details Improvement of SXT Image Alignment in Order to Obtain High-Resolution Temperature Maps Improvement of SXT Image Alignment in Order to Obtain High-Resolution Temperature Maps

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aca....46...15s&link_type=abstract

Acta Astronomica, v.46, pp.15-28, (1996).

Astronomy and Astrophysics

Astronomy

18

Sun: Corona, Sun: X-Rays: Gamma Rays

Scientific paper

Examples are shown and discussed which indicate that published temperature maps derived using SXT intensity ratio technique may be substantially biased if standard image processing routines are used to coalign the images. Methods are discussed which allow for independent of the Yohkoh satellite pointing information, precise (0.12 arcsec), alignment of images obtained in selected energy bands (filters). Examples are presented illustrating the differences in the temperature maps derived using standard and additional pointing correction (APC).

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