  For all involved in astronomy, the importance of monitoring and determining
astrophysical magnetic field strengths is clear. It is also a well-known fact
that the corona magnetic fields play an important part in the origin of solar
flares and the variations of space weather. However, after many years of solar
corona studies, there is still no direct and continuous way to measure and
monitor the solar magnetic field strength. We will here present a scheme which
allows such a measurement, based on a careful study of an exotic class of
atomic transitions known as magnetic induced transitions in Fe$^{9+}$. In this
contribution we present a first application of this methodology and determine a
value of the coronal field strength using the spectroscopic data from HINODE.
