Table 2.
Summary of the integration times, image quality, and depth from our observations with HST/ACS, HST/WFC3, and VLT/FORS2.
| F606W |
F814W |
F110W |
UHIGH |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cluster name | texp | IQ | Depth | texp | IQ | Depth | texp(b) | IQ | Depth (b) | texp | IQ | Depth |
| [ks] | [″] | [mag] | [ks] | [″] | [mag] | [ks] | [″] | [mag] | [ks] | [″] | [mag] | |
| SPT-CL J0156−5541 | 5.5 | 0.10 | 27.0 | 4.9 | 0.10 | 26.6 | 0.6 | 0.29 | 26.3 | 4.8 | 0.73 | 26.9 |
| SPT-CL J0205−5829 | 3.7 (a) | 0.10 | 27.1 (a) | 3.7 | 0.08 | 26.5 | 0.6 | 0.29 | 26.3 | 4.8 | 0.85 | 26.8 |
| SPT-CL J0313−5334 | 3.7 | 0.10 | 26.9 | 3.7 | 0.09 | 26.1 | 0.6 | 0.29 | 26.3 | 4.8 | 0.80 | 27.1 |
| SPT-CL J0459−4947 | 2.3 | 0.11 | 26.7 | 4.8 | 0.10 | 26.5 | 0.6 | 0.28 | 26.3 | 6.0 | 0.81 | 26.9 |
| SPT-CL J0607−4448 | 2.3 | 0.10 | 26.7 | 4.8 | 0.10 | 26.3 | 0.6 | 0.28 | 26.4 | 4.8 | 0.97 | 26.4 |
| SPT-CL J0640−5113 | 5.6 | 0.10 | 26.7 | 3.3 | 0.10 | 26.2 | 0.6 | 0.26 | 26.1 | 2.4 | 0.97 | 26.3 |
| SPT-CL J0646−6236 | 4.0 | 0.10 | 26.8 | 4.0 | 0.10 | 26.1 | 0.6 | 0.27 | 26.1 | 4.8 | 1.07 | 26.3 |
| SPT-CL J2040−4451 | 2.1 | 0.10 | 26.6 | 4.8 | 0.10 | 26.1 | 0.6 | 0.28 | 26.1 | 4.8 | 0.88 | 26.5 |
| SPT-CL J2341−5724 | 5.3 | 0.10 | 26.5 | 4.8 | 0.10 | 26.2 | 0.6 | 0.29 | 26.1 | 4.8 | 0.92 | 26.9 |
| HUDF | − | − | − | − | − | − | − | − | − | 6.6 | 1.03 | 26.6 |
Notes. For the image quality (IQ), we report the full width at half maximum of the PSF, based on measurements with Source Extractor. The depth corresponds to 5σ limiting magnitudes, computed from the standard deviation of 1000 non-overlapping apertures without flux from detected sources. We used apertures with diameters of 
for HST bands and 
for UHIGH.
For the cluster SPT-CL J0205−5829 a 2 × 2 ACS mosaic from GO programme 12477 and one single ACS pointing from GO programme 14677 are available in the F606W band. We have eight overlapping exposures in the region with the biggest overlap with our observations in the other bands. We report the integration time and depth based on this region.
The F110W stacks are mosaics of eight exposures. The highest/intermediate/lowest depth is achieved, where eight/four/two exposures overlap, respectively. Since regions with only two overlapping exposures make up the most area in the stacks, we report integration times and depths equivalent to two exposures.
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