Naturally weighted 86 GHz images of NRAO 530. Left panel: using data of project BF114A (2015-05-22) with VLBA and LMT. Right panel: using data of project BF114B (2015-05-23) with VLBA, LMT and GBT. The contours indicate the flux density level (dashed-grey contours are negative), scaled logarithmically and separated by a factor of two, with the lowest level set to the 3σ-noise level. The synthesized array beam is shown as a grey ellipse in the lower left corner. Image parameters are listed in Table 1.