A Repository of Precision Flat Fields for High-Resolution MDI Continuum Data |
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| Authors: | H E Potts D A Diver |
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| Institution: | (2) Suffolk, UK |
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| Abstract: | We describe an archive of high-precision MDI flat fields that can be used to refine most MDI high-resolution continuum data.
The archive consists of many flat-field images representing different time ranges over the full operating period of SOHO.
The residual flat-field error on the standard level 1.5/1.8 calibrated continuum images represents a significant proportion
(25% – 100%) of the true data variation data on the quiet sun. Using the flat fields in this archive will reduce that error
by a factor of 10 – 30, greatly increasing the accuracy of any tracking or photometric operations. The access, use and accuracy
of these flat fields are described in this paper. |
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