An imaging spectroscopic survey of the planetary nebula NGC 7009 with MUSE J. R. Walsh, A. Monreal-Ibero, M. J. Barlow, T. Ueta, R. Wesson, A. A. Zijlstra, S. Kimeswenger, M. L. Leal-Ferreira and M. Otsuka A&A, 620 (2018) A169 Published online: 14 December 2018 DOI: 10.1051/0004-6361/201833445