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Table 2
Overview of the observations used in this paper. HD 100546 was observed as part of different programmes than the other observations, leading to the difference in filters and observation times.
| Target | Instrument | Date | Filter | λ0 (μm) | Δλ (μm) | Integration time (s) |
|---|---|---|---|---|---|---|
| HD 100546 | VISIR | 28-04-2018 | J8.9 | 8.70 | 0.74 | 3600 |
| NEAR | 11-12-2019 | PAH1 | 8.58 | 0.41 | 540 | |
| ARIII | 8.98 | 0.14 | 540 | |||
| PAH2 | 11.24 | 0.54 | 540 | |||
| 12-12 2019 | PAH2_2 | 11.68 | 0.37 | 540 | ||
| HD 163296 | NEAR | 14-09-2019 | PAH1 | 8.58 | 0.41 | 600 |
| 13-09-2019 | NEAR | 11.25 | 2.5 | 600 | ||
| HD 169142 | NEAR | 13-09-2019 | PAH1 | 8.58 | 0.41 | 600 |
| NEAR | 11.25 | 2.5 | 600 | |||
| TW Hya | NEAR | 13-12-2019 | PAH1 | 8.58 | 0.41 | 600 |
| 16-12-2019 | NEAR | 11.25 | 2.5 | 600 | ||
| HD 100453 | NEAR | 12-12-2019 | PAH1 | 8.58 | 0.41 | 600 |
| NEAR | 11.25 | 2.5 | 600 | |||
| HD 36112/MWC 758 | NEAR | 18-12-2019 | NEAR | 11.25 | 2.5 | 600 |
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