PSF fourth-order moments in the sky frame (spin-2 + rho4) - #859

Merged

cailmdaley merged 8 commits into

feat/psf-fourth-moments

Sep 28, 2026

Commits on Sep 26, 2026

feat(psfex-interp): add spin-2 fourth moments and rho4 in sky frame

cailmdaley
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claude
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0e70ec7
test(psfex-interp): analytic and frame-invariance tests for fourth moments

cailmdaley
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claude
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df07bd6
fix(merge-starcat): carry HSM fourth moments through PSFEx merge

cailmdaley
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claude
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11e2f4c
test(psfex-interp): cover bad-pixel masking and centroid transform

cailmdaley
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ce5ed52
feat(make_cat): carry PSF fourth moments into the per-epoch HSM_*_PSF_n slots

cailmdaley
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claude
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6864b20
test: HSM column seam checks + @sc contracts for the fourth-moment chain

cailmdaley
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b40dfc2
refactor(psfex-interp): one _hsm_columns writer; out-of-range fourth-moment fills in make_cat

cailmdaley
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claude
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9f5b8de
test(psfex-interp): analytic oracle + spin-2 rotation law for the fourth moments

cailmdaley
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claude
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490bda7