This article has an erratum: [https://doi.org/10.1051/0004-6361/201936026e]
Median absolute deviation (MAD; see Sect. 4) as a function of the median magnitude in filter F467M in globular cluster M4 for HSC v2 (upper panel) and HSC v3 (lower panel). The plot includes 5300 objects (black dots) that have more than 50 measurements in the WFC3/UVIS F467M filter. The red and blue lines represent the median noise for sources with magnitudes brighter than 21 in HSC v2 and HSC v3, respectively. This field was affected by image alignment problems that have been corrected in HSC v3, which resulted in improved accuracy of the photometry.
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