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JP-4091 adding MIRI WFSS background subtraction #10241

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JP-4091 adding MIRI WFSS background subtraction #10241

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0e4b283
adding miri background subtraction for WFSS
jemorrison Feb 9, 2026
c85d7ff
Update change log
jemorrison Feb 9, 2026
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1 change: 1 addition & 0 deletions changes/10241.bacgkround.rst
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@@ -0,0 +1 @@
Added MIRI WFSS background subtraction of a reference file.
4 changes: 2 additions & 2 deletions jwst/background/background_step.py
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Expand Up @@ -16,7 +16,7 @@

log = logging.getLogger(__name__)

WFSS_TYPES = ["NIS_WFSS", "NRC_GRISM", "NRC_WFSS"]
WFSS_TYPES = ["NIS_WFSS", "NRC_GRISM", "NRC_WFSS", "MIR_WFSS"]


class BackgroundStep(Step):
Expand Down Expand Up @@ -66,7 +66,7 @@ def process(self, step_input, input_bkg_list=None):
asn = self.load_as_level2_asn(step_input)
model, members_by_type = self._asn_get_data(asn)

if model.meta.exposure.type in ["NIS_WFSS", "NRC_WFSS"]:
if model.meta.exposure.type in ["NIS_WFSS", "NRC_WFSS", "MIR_WFSS"]:
# Get the reference file names
bkg_name = self.get_reference_file(model, "bkg")
wlrange_name = self.get_reference_file(model, "wavelengthrange")
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2 changes: 1 addition & 1 deletion jwst/pipeline/calwebb_spec2.py
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Expand Up @@ -48,7 +48,7 @@
]

GRISM_TYPES = ["NRC_TSGRISM", "NIS_WFSS", "NRC_GRISM", "NRC_WFSS"]
EXP_TYPES_USING_REFBKGDS = ["NIS_WFSS", "NRC_GRISM", "NRC_WFSS", "NIS_SOSS"]
EXP_TYPES_USING_REFBKGDS = ["NIS_WFSS", "NRC_GRISM", "NRC_WFSS", "NIS_SOSS", "MIR_WFSS"]
WFSS_TYPES = ["NIS_WFSS", "NRC_GRISM", "NRC_WFSS", "MIR_WFSS"]
TA_TYPES = ["MIR_LRS-FIXEDSLIT", "MIR_LRS-SLITLESS"]

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