Sunspots NOAA 486 and NOAA 484, October 24th, 2003
Bill Livingston/NSO/AURA/NSF · Download full size image
Sunspots NOAA 486 and NOAA 484, October 24th, 2003
Sunspots NOAA 486 and NOAA 484, October 24th, 2003, shown side by side with magnetic intensity values labelled.
The total magnetic field, in gauss, was based on Zeeman splitting of Fe 15648, at the temperature minima position (darkest place) in the sunspot umbrae. 24th October 2003 at McMath-Pierce facility, Kitt Peak. Polarities courtesy Mt. Wilson. Picture by Dr Bill Livingston. Posted on: 28 Feb, 2005
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