Table 1
Log of the SPHERE/ZIMPOL observations of L2 Pup and its associated PSF calibrator, β Col.
| # | MJD | Star | Coronagraph | DIT | NDIT | Dither | Polar | Total exp. | Seeing | AM |
| [s] | cycles | [s] | [′′] | |||||||
|
|
||||||||||
| 1 | 56 998.3024 | β Col | No | 1.2 | 16 × 2 | 6 | 1 | 230.4 | 0.74 | 1.11 |
| 2 | 56 998.3229 | L2 Pup | No | 1.2 | 50 × 2 | 6 | 1 | 720 | 0.77 | 1.08 |
| 3 | 56 998.3558 | L2 Pup | Yes | 12 | 4 × 2 | 6 | 2 | 1152 | 0.67 | 1.14 |
Notes. MJD is the average modified Julian date of the exposures. DIT is the individual exposure time of the SPHERE frames, and NDIT is the total number of frames recorded. Dither is the number of dithering positions, and AM is the airmass.
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