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- [ ] basic sky subtraction
- [ ] Kelson, 2003, PASP 115
- [ ] Does ABBA-style sky subtraction in the NIR fall under basic imaging reduction?]
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Right now, in the zogy subtraction code, we set the `lim_mag_estimate` of the sub image to just be the same as the new image.
If (a) the ref image is a lot deeper than the new image, and (b) the ref …
rknop updated
1 month ago
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In the PCA sky subtraction developed by Wild & Hewett for SDSS spectra a spectral feature mask was utilised, so that spectra with emission lines at known places would not change the amplitudes to favo…
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without `--invert` , vis-subtract will throw an error `No sources were specified for subtraction` for a perfectly valid seeming command like
```
hyperdrive vis-subtract -n ${num_sources} ...
```
…
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This is a placeholder list of possible QC tests for AARTFAAC images. These might be different from those applicable to LOFAR images due to several reasons:
- Image noise dependent on LST of observatio…
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Anand has reported worse halo subtraction around this bright star:
- dr8: https://www.legacysurvey.org/viewer-dev/?ra=34.8363&dec=-2.9785&layer=ls-dr8&zoom=10
- dr9m: https://www.legacysurvey.org/vi…
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_Issue [JP-3758](https://jira.stsci.edu/browse/JP-3758) was created on JIRA by [David Law](https://jira.stsci.edu/secure/ViewProfile.jspa?name=dlaw):_
MRS master background currently averages over …
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https://jira.eso.org/browse/MET-2112
> The background subtraction schema described here is perfectly appropriate and corresponds to the best available approaches for imaging, but appears to imply t…
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In general, the sky subtraction is doing quite well. In visual inspections of the LRG spectra, I've noticed only a few cases in tile 68002 where the sky residuals are leading to confusion in the reds…
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**Is your feature request related to a problem? Please describe.**
I'm always frustrated when I realise that sky flats (and sky subtraction) will not work in realtime as wellcurrently formulated
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