Examinations of the Relative Alignment of the Instruments on SOT

Details Examinations of the Relative Alignment of the Instruments on SOT Examinations of the Relative Alignment of the Instruments on SOT

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..369...47o&link_type=abstract

New Solar Physics with Solar-B Mission ASP Conference Series, Vol. 369, proceedings of the conference held 8-11 November, 2005 a

Physics

2

Scientific paper

We report the results of the examination about the relative alignment among the instruments on SOT. We employ a test data set obtained in the natural sun-light test in May 2005, which has had a grid pattern over the entire FOV. SOT has the filtergraph (FG) and the spectro-polarimeter (SP). The FG consists of six broadband filter imagers (BFI) and six narrowband filter imagers (NFI). We examined the displacements among the images taken with different filters to an accuracy of better than 0.1 pixel corresponding to 0.02''. It is important to know relative displacements and plate scales of these instruments for accurate alignment of observational data. We note that the values measured in our work are relative and it is needed to decide the absolute values with another way.

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