Table 1.
Details on the four groups of H.E.S.S. observations, with similar pointing zenith angle and source offsets from the pointing direction, that were used for the 3D likelihood analysis.
| Number of runs | Zenith [deg] | Pointing offset from the source [deg] | On-source livetime [hr]( * ) | Observation period |
|---|---|---|---|---|
| 26 | 17.8–35.1 | 0.2–1.4 | 9.7 | 2004–2011 |
| 166 | 16.3–35.9 | 1.6–2.8 | 1.8 | 2004–2014 |
| 88 | 36.1–62.4 | 2.2–2.8 | 0.0 | 2004–2014 |
| 80 | 37.5–59.1 | 0.3–0.8 | 33.4 | 2017–2019 |
Notes. ( * )Obtained by averaging over a 0.5°-radius circle centered at the center of the HGPS position of HESS J1702-420. We observe that runs belonging to the second and third groups were included to better contrain the background level in the source region. The fourth group contains all (and only) runs taken after the 2017 camera upgrade (Ashton et al. 2020).
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