Table 2.
Summary of the observing blocks.
| OB | Dithering pattern | Date | Airmass | Total exp. | Seeing | log(RobustStd) | Quality |
|---|---|---|---|---|---|---|---|
| (ramps × t × frames) | (yyyy-mm-dd) | (s) | (″) | ||||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
| OB0001 | 3 × 100 × 11 | 2016-05-20 | 1.10 | 3300 | 0.72 | 0.63 | ✓ |
| OB0002 | 3 × 100 × 11 | 2016-05-20 | 1.11 | 3300 | 0.70 | 0.70 | ✓ |
| OB0003 | 3 × 100 × 11 | 2016-05-21 | 1.16 | 3300 | 0.66 | 0.70 | ✓ |
| OB0004 | 5 × 60 × 11 | 2016-06-23 | 1.11 | 3300 | 0.65 | 0.60 | ✓ |
| OB0005 | 5 × 60 × 12 | 2016-06-23 | 1.17 | 3600 | 0.68 | 0.59 | ✓ |
| OB0006 | 5 × 60 × 11 | 2016-06-25 | 1.11 | 3300 | 0.54 | 0.51 | ✓ |
| OB0007 | 5 × 60 × 11 | 2016-06-25 | 1.18 | 3300 | 0.87 | 0.49 | ✓ |
| OB0008 | 5 × 60 × 11 | 2016-07-20 | 1.30 | 3300 | 0.71 | 0.63 | ✓ |
| OB0009 | 5 × 60 × 11 | 2016-07-21 | 1.39 | 3300 | 0.61 | 0.62 | ✓ |
| OB0010 | 5 × 60 × 11 | 2016-07-22 | 1.27 | 3300 | 0.70 | 0.53 | ✓ |
| OB0011 | 5 × 60 × 11 | 2017-04-07 | 1.14 | 3300 | 0.66 | 0.44 | ✓ |
| OB0012 | 5 × 60 × 11 | 2017-04-07 | 1.10 | 3300 | 0.57 | 0.43 | ✓ |
| OB0013 | 5 × 60 × 11 | 2017-04-07 | 1.11 | 3300 | 0.75 | 0.37 | ✓ |
| OB0014 | 5 × 60 × 11 | 2017-04-07 | 1.17 | 3300 | 0.69 | 0.39 | ✓ |
| OB0015 | 5 × 60 × 11 | 2017-06-03 | 1.30 | 3300 | 1.04 | 0.70 | ✓ |
| OB0016 | 5 × 60 × 11 | 2017-06-03 | 1.11 | 3300 | 0.71 | 0.95 | – |
| OB0017 | 5 × 60 × 11 | 2017-06-03 | 1.10 | 3300 | 0.70 | 0.91 | – |
| OB0018 | 5 × 60 × 11 | 2017-06-03/04 | 1.13 | 3300 | 0.90 | 0.79 | – |
| OB0019 | 5 × 60 × 11 | 2017-06-10 | 1.39 | 3300 | 0.84 | 0.74 | ✓ |
| OB0020 | 5 × 60 × 11 | 2017-06-10 | 1.67 | 3300 | 0.84 | 0.66 | ✓ |
| OB0021 | 5 × 60 × 12 | 2017-06-13 | 1.33 | 3600 | 0.83 | 0.60 | ✓ |
| OB0022 | 5 × 60 × 11 | 2017-06-13 | 1.57 | 3300 | 0.83 | 0.59 | ✓ |
| OB0023 | 5 × 60 × 09 | 2017-07-05 | 1.55 | 2700 | 1.13 | 0.62 | ✓ |
Notes. Columns: (1): Observing block IDs. (2): Dithering pattern; number of ramps (the number of times to repeat the readout scheme selected), exposure time in each ramp in seconds, and number of dithered positions. (3): Observation date (yyyy-mm-dd). (4): Mean airmass between initial and final exposures. (5): Total exposure time in seconds. (6): Seeing in arcseconds. (7): Logarithm of the robust standard deviation of the central part of the image (see more details in Appendix A). (8): Quality of the OBs: checkmarks indicate OBs with the expected quality that were finally used in this work.
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