sequence consisted of a loop of 2 minutes each on the quasars 3C454.3 ($\sim13$ Jy, $6\degr$ away) and J2232+117 ($\sim5$ Jy, $12\degr$ away) and 10 minutes on the target source HR 8799. Passband calibration was obtained with observations of the strong sources 3C454.3 and Uranus. The absolute flux scale was set using observations of Uranus obtained in each track, with 10% overall accuracy. All of the basic calibration was performed using standard procedures in the MIR software package. Continuum visibilities were output in 30 second scans spanning 4 GHz widths, centered at 215.5, 219.5, 231.5, and 235.5 GHz. Fourier inversion for continuum and spectral line imaging and [clean]{} deconvolution were done in the [CASA]{} software package (version 4.7.2).

[l c c c c]{} 0.06in 2016 Aug 17 & 7 & $7-69$ & 0.08 & $-3.9,+3.7$\
2016 Aug 27 & 8 & $6-69$ & 0.08 & $-4.0,+3.8$\
2016 Aug 29 & 8 & $6-69$ & 0.10 & $-1.7,+3.7$\
2016 Aug 30 & 8 & $6-69$ & 0.07 & $-0.8,+3.7$\
2016 Sep 06 & 8 & $6-69$ & 0.09 & $-3.8,+3.7$\
2016 Sep 21 & 7 & $6-45$ & 0.08 & $-3.6,+3.6$\

Atacama Large Millimeter/submillimeter Array
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We retrieved observations of HR 