Herschel observations of PNe in the MESS key program
  In this paper we give a progress report on the Herschel imaging and spectroscopic observations of planetary nebulae that are carried out as part of the MESS guaranteed time key program. We present and discuss imaging and temperature maps of NGC 6720, NGC 650, and NGC 6853, as well as PACS and SPIRE spectroscopy of NGC 7027. 
P. A. M. van Hoof, M. J. Barlow, G. C. Van de Steene, K. M. Exter, R.   Wesson, R. Ottensamer, T. L. Lim, B. Sibthorpe, M. M...
astro-ph.SR