A comparison of co-temporal magnetograms obtained with the Huairou magnetograph and the Spectro-Polarimeter on board Hinode

Details A comparison of co-temporal magnetograms obtained with the Huairou magnetograph and the Spectro-Polarimeter on board Hinode A comparison of co-temporal magnetograms obtained with the Huairou magnetograph and the Spectro-Polarimeter on board Hinode

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009scchg..52.1707w&link_type=abstract

Science in China Series G: Physics, Mechanics and Astronomy, Volume 52, Issue 11, pp.1707-1712

Astronomy and Astrophysics

Astronomy

1

Atmosphere, Magnetic Fields, Magnetic Fields

Scientific paper

We have compared a set of co-temporal magnetograms obtained with the Solar Magnetic Field Telescope (SMFT) of the Huairou Solar Observing Station (HSOS) and with the Spectro-Polarimeter of the Solar Optical Telescope (SP/SOT) on board Hinode to check the linear calibrations of SMFT vector magnetograms. The comparison shows that the currently used calibration coefficients of the SMFT have under-estimated the flux density and that a center-to-limb variation of the calibration coefficients was not taken into account by previous calibrations.

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