We have recently discovered a shell source in Cygnus and
 identified its central star. All data available up to now in
 the radio, IRAS and optical regime are consistent with an
 interpretation that we have found an hitherto unknown LBV
 surrounded by a nearly perfect wind blown bubble. As the star
 apparently undergoes an interstellar extinction of about 16
 magnitudes there is no hope to study the interaction of its
 strong stellar wind at optical or even shorter wavelengths. As
 LBVs are rare objects and none features a well defined wind
 blown bubble we may have caught one at a special time of its
 evolution. As the IRAS data strongly indicate that there are
 at least 2 IR components, one maybe directly near the star and
 the other connected with either the ionized or neutral shell
 we want to map the spectral energy distribution of the 4'
 bubble at 8 wavelengths with different ISOPHOT filters. With
 these maps we want to disentangle the spatial and spectral
 components. As the expected geometry is that of many filaments
 as usual in ring nebulae we expect several such components. In
 the end the temperature and density distribution shall be
 derived which shall help to model the interaction of a wind
 with the ambient medium, a wind which may have changed its
 properties only recently. As the amount of circumstellar and
 ambient dust is critical for cooling down hot gas from the wind
 shocks and as contaminations of continuum emission by strong
 emission lines (CII,OI,OIII) is expected with large line to
 continuum ratios we also want to map these lines. In addition
 the line ratios will be used to derive electron densities of
 the cool and warm gas components.