Details
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Type:
Story
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Status: Won't Fix
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Resolution: Done
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Fix Version/s: None
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Component/s: DM Subsystem Science, Requirements Documents
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Team:DM Science
Description
As raised in this community post:
https://community.lsst.org/t/data-model-for-variable-sources-at-time-of-data-releases/2695
we currently do not have Object flux measures that are designed to yield the total flux at an epoch when combined with a difference-image flux at that epoch; this would require photometry measured on the template coadds, which in general has different input images than the deep coadds and multi-epoch fitting algorithms. Robert Lupton and I believe PSF and aperture fluxes are probably sufficient. We should leave open the possibility that these fluxes could be measured in a way that makes them consistent with the template coadd rather than measured directly on the template coadd itself.
Computing these fluxes will not add appreciable scope to pipeline development or runtime (it's just a reconfiguration of codes we have to write and run anyway), but they should be documented in the DPDD.
Attachments
Issue Links
- duplicates
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Activity
As suggested by Jim, closing due to duplication with DM-13375.
As noted on the original community post and DM-13375, the existing DIAObject.pfMeanFlux column may provide what we need here, under certain conditions. I've tried to describe those conditions and how we should adjust the DPDD accordingly on DM-13375, so I recommend we just try to address this issue on that ticket and close this one.