The Sun's magnetic field
NSO/AURA/NSF · Download full size image
The Sun's magnetic field
The first full-disk magnetogram obtained with the new SOLIS Vector Spectromagnetograph (VSM), on August 8th, 2003. This picture was taken with the telescope not in best focus and without the benefit of a flat-field calibration. The geometry is not fully corrected and image tracking was unguided. In spite of these limitations, the noise level is low and this first image indicates that the VSM will provide a significant improvement in the quality of solar magnetic field measurements. Posted on: 28 Feb, 2005
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