bands [@2019MNRAS.489..241M].

The S-PLUS DR1 data cover Stripe 82 using a pair of exposures at each right ascension, limiting the declination to the range $-1.4^\circ\leq\text{dec}\leq+1.4^\circ$. Moreover, the SPLUS DR1 data did not use dithering, causing occasional gaps between exposures, resulting in a few UDGs that are not observed despite being within the footprint of the survey. In total, we have observations for only 100 SMUDGes from the initial sample of 172. Figure \[fig:footprint\] shows the spatial distribution of the SMUDGes Stripe 82 sample overlapped with the S-PLUS DR1 footprint.

Photometry of UDGs from the S-PLUS data {#sec:photometry}
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are not easily detected given the surface brightness limits of the S-PLUS survey, and only one UDG was previously detected in the DR1 catalog of photometric redshifts [@2019arXiv190706315M]. Therefore, we had to obtain our own photometry of the from the S-PLUS images leveraging the information from the deeper SMUDGes photometry.

Regarding the data quality of S-PLUS, all images in the S-PLUS Main Survey, which includes Stripe 82, are obtained during photometric nights with seeing $\le$ 2. Among the 61 different tiles used in this work, the mean over all bands is 1.4. Moreover, because each field is imaged in all bands consecutively 