A Repository of Precision Flat Fields for High-Resolution MDI Continuum Data

Details A Repository of Precision Flat Fields for High-Resolution MDI Continuum Data A Repository of Precision Flat Fields for High-Resolution MDI Continuum Data

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009soph..258..343p&link_type=abstract

Solar Physics, Volume 258, Issue 2, pp.343-351

Physics

Soho Mdi, Data Processing, Flatfield, Continuum Images

Scientific paper

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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