lincc-frameworks / lincc-frameworks/rubin-dash
Implement values in auxiliary ra/dec columns as being offsets from main ra/dec
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- Dominant language
- Python
- Stars
- 2
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- 0
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- No merged PRs in 30d
Description
The ra/dec columns which are not the ``main`` ra/dec are a considerable part of the catalog (``main`` value being calculated a position of object/dia_object on coadd, the value that we use to do healpix_29). We downsample these to float32 but that leads to changes to the values which can be larger than the errors on the values.
Implement a solution to make all of the columns which are not the main ra/dec to be expressed an an offset from the main values, which can be expressed as float32 without losing precision.
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Research direction
No files, tests, or entry points are named in the issue. Trace the catalog import and float32 downsampling path, then verify that non-main ra/dec values are stored as offsets from the main values without exceeding the original measurement errors.
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Assessment
- Tech stack
- python
- Domain
- data-engineering
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100