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Fix Lo L2 processing pointing set midpoint_j2000_et calculation #3011

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Fix Lo L2 processing pointing set midpoint_j2000_et calculation #3011

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4 changes: 2 additions & 2 deletions imap_processing/ena_maps/ena_maps.py
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Original file line number Diff line number Diff line change
Expand Up @@ -804,8 +804,8 @@ def midpoint_j2000_et(self) -> float:
The midpoint value [J2000 ET] of the pointing set.
"""
epoch_delta = met_to_ttj2000ns(
self.data["pointing_end_met"].data - self.data["pointing_start_met"].data
)
self.data["pointing_end_met"].data
) - met_to_ttj2000ns(self.data["pointing_start_met"].data)
return float(ttj2000ns_to_et(self.epoch + epoch_delta / 2))


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5 changes: 3 additions & 2 deletions imap_processing/tests/ena_maps/test_ena_maps.py
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Original file line number Diff line number Diff line change
Expand Up @@ -307,8 +307,9 @@ def test_init(self, lo_pset_ds):
# check that the midpoint_j2000_et property is equal to the expected value
assert lo_pset.midpoint_j2000_et == ttj2000ns_to_et(
lo_pset.epoch
+ met_to_ttj2000ns(
lo_pset_ds.pointing_end_met - lo_pset_ds.pointing_start_met
+ (
met_to_ttj2000ns(lo_pset_ds.pointing_end_met)
- met_to_ttj2000ns(lo_pset_ds.pointing_start_met)
)
/ 2
)
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