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Update PSF fitting defaults. #936

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Update PSF fitting defaults. #936

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42bb5a1
Update PSF fitting defaults.
schlafly Oct 12, 2023
85b47a9
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Oct 12, 2023
d0f21f1
Update changelog
schlafly Oct 12, 2023
f3e5a8e
Merge branch 'psf-default-update' of https://github.com/schlafly/roma…
schlafly Oct 12, 2023
b9ccb89
Remove now orphaned central wavelengths variable.
schlafly Oct 16, 2023
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2 changes: 2 additions & 0 deletions CHANGES.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,8 @@ general

- Use tolerance for more comparisons in ``compare_asdf`` [#917]

- Update PSF fitting defaults. [#936]

ramp_fitting
------------

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10 changes: 3 additions & 7 deletions romancal/lib/psf.py
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Expand Up @@ -58,7 +58,7 @@ def create_gridded_psf_model(
path_prefix,
filt,
detector,
oversample=12,
oversample=11,
fov_pixels=12,
sqrt_n_psfs=4,
overwrite=False,
Expand All @@ -82,7 +82,8 @@ def create_gridded_psf_model(
Computed gridded PSF model for this SCA.
Examples include: `"SCA01"` or `"SCA18"`.
oversample : int, optional
Oversample factor, default is 12. See WebbPSF docs for details [1]_.
Oversample factor, default is 11. See WebbPSF docs for details [1]_.
Choosing an odd number makes the pixel convolution more accurate.
fov_pixels : int, optional
Field of view width [pixels]. Default is 12.
See WebbPSF docs for details [1]_.
Expand Down Expand Up @@ -150,17 +151,12 @@ def create_gridded_psf_model(
if instrument_options is not None:
wfi.options.update(instrument_options)

central_wavelength_meters = (
filter_central_wavelengths[f"WFI_Filter_{filt}_Center"] * 1e-6 * u.m
)

# Initialize the PSF library
inst = gridded_library.CreatePSFLibrary(
instrument=wfi,
filter_name=filt,
detectors=detector.upper(),
num_psfs=n_psfs,
monochromatic=central_wavelength_meters,
oversample=oversample,
fov_pixels=fov_pixels,
add_distortion=False,
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