Page History

...

A2: The striping is near the noise floor. It may be due to cosmic ray showers, artifacts in the flats, correlated noise, etc. This is normal and not a cause for concern.

...

Q3: The Known Issues page (MR-MRS06) explains that the flux uncertainties for MRS are unrealistically small. Work around to apply method in Law at al. (2023). Is this still the best advice?

A3:  Law et al. (2023) describes the impact of covariances that are not treated well in the pipeline. There are other noise contributions that are currently not included by the pipeline.  One example is the noise contribution from the darks, which is significant for faint sources.  This will be addressed in the next pipeline release.  For bright sources, errors in the flat field may be another missing sources of noise. Bottom line, errors are currently underestimated. Empirical boor bootstrap approach can be usused based on the spectrum itself to get a better estimate of the uncertainties.

...

Q4:  Stepping through JWebbinar 31 notebook works fine for the example data, but my data raises a ValueError: "Too few input images (or groups of images) with non-empty catalogs."

...