Left: calibrated null depths for the different aperture radii and for the three nights of observation with NOMIC. The aperture radii are 8, 16, 24, 32, and 40 pixels (i.e., 143, 286, 430, 573, and 716 mas, respectively). Right: calibrated null depths for the 2023 May 25 observation as a function of aperture radius. Results for the two individual pointings are shown as dotted and dashed lines, and the combined results are shown as crosses. The first pointing corresponds to the OBs taken from 04:00 to 06:00 UT and the second pointing is from 06:30 to 07:30 UT.