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Table 3
Circumstances of image grouping and stacking.
| Filter | # of images used for the analysis | # of final stacks | stack id. | Time rangea | Airmass sub-range | Median airmassb |
|
|
||||||
| B | 7 | 2 | a (4x) | 03:41–04:55 | 1.116–1.201 | 1.145 |
| b (3x) | 05:32–06:17 | 1.298–1.504 | 1.386 | |||
| V | 7 | 2 | a (4x) | 03:47–05:01 | 1.118–1.213 | 1.151 |
| b (3x) | 05:37–06:23 | 1.317–1.538 | 1.412 | |||
| R | 9 | 3 | a (4x) | 03:33–04:27 | 1.114–1.153 | 1.135 |
| b (3x) | 04:50–05:26 | 1.190–1.280 | 1.242 | |||
| c (2x) | 05:49–06:12 | 1.362–1.471 | 1.417 | |||
| I | 7 | 2 | a (4x) | 04:44–05:07 | 1.121–1.227 | 1.159 |
| b (2x) | 05:43–06:06 | 1.339–1.440 | 1.390 | |||
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