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Rectify 2D spectrum #170

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PatrickOgle opened this issue Apr 11, 2023 · 1 comment · May be fixed by #235
Open

Rectify 2D spectrum #170

PatrickOgle opened this issue Apr 11, 2023 · 1 comment · May be fixed by #235
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@PatrickOgle
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Use spectral trace object to rectify a 2D spectrum by shift-interpolating columns in the spatial direction.
This doesn't require a wavelength solution. This simplest case assumes no mixing of spatial and spectral dimensions.
@PatrickOgle
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PatrickOgle commented Apr 11, 2023 •
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This works well, and could form the basis of the algorithm:
center = trace_r.guess
spec2d_rectified = 1.0 *spec2d
for col in range(ncols):
shift = center - trace_r[col]
shifted_col = ndimage.interpolation.shift(spec2d[:,col], shift, order=2)
spec2d_rectified[:,col] = shifted_col

@hpparvi hpparvi self-assigned this Dec 10, 2024
@hpparvi hpparvi linked a pull request Dec 10, 2024 that will close this issue
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@hpparvi hpparvi linked a pull request Dec 10, 2024 that will close this issue
Issue 170 align spectrum along trace #235
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Issue 170 align spectrum along trace hpparvi/specreduce
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@hpparvi @PatrickOgle