Table 2
Logbook of the CHEOPS observations of KELT-20.
| File-key(1) | Visit | Start time | Duration | No. frames(2) | Efficiency(3) | Rjct. pts. |
|---|---|---|---|---|---|---|
| ID | (UTC) | (h) | (%) | |||
| CH_PR100016_TG014101_V0200 | 1520194 | 2021-06-25 12:43:51 | 10.98 | 747 | 69.6 | 78 |
| CH_PR100016_TG014102_V0200 | 1533914 | 2021-07-12 22:48:52 | 11.22 | 695 | 64.2 | 70 |
| CH_PR100016 TG014103_V0200 | 1543424 | 2021-07-29 07:02:51 | 10.96 | 747 | 69.7 | 69 |
| CH_PR100016_TG014104_V0200 | 1566969 | 2021-08-12 04:01:51 | 10.98 | 772 | 71.5 | 80 |
| CH_PR100016_TG014105_V0200 | 1840687 | 2022-07-02 05:59:52 | 11.22 | 682 | 62.8 | 78 |
| CH_PR100016_TG014106_V0200 | 1850916 | 2022-07-16 03:59:51 | 10.87 | 705 | 66.6 | 74 |
| CH_PR100016_TG014107_V0200 | 1878526 | 2022-08-09 11:37:51 | 10.68 | 684 | 66.2 | 71 |
| CH_PR110047_TG000401_V0200 | 1532996 | 2021-07-11 04:05:52 | 11.0 | 664 | 62.8 | 64 |
| CH_ PR110047_ TG000402_ V0200 | 1532997 | 2021-07-14 16:57:51 | 9.8 | 621 | 64.8 | 53 |
| CH_PR110047_TG001001_V0200 | 1564166 | 2021-08-11 10:50:51 | 9.31 | 612 | 67.7 | 63 |
| CH_PR110047_TG001002_V0200 | 1580776 | 2021-09-01 09:39:51 | 9.28 | 609 | 67.1 | 72 |
| CH_PR100020_TG000801_V0200 | 1869414 | 2022-07-28 08:48:49 | 10.83 | 716 | 64.9 | 79 |
Notes. The top seven are the occultation observations while the bottom five are the transits. (1)The file-key is the unique identifier associated with each CHEOPS visit.(2) A single frame is here the result of 3 stacked images and the integration time is tint = 36 s which is same for each observation. The last column indicates the number of the rejected data points. (3)The efficiency represents the ratio between the durations of the uninterrupted observation and the total observation (interruptions occurred due to Earth occultations or SAA crossings).
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