CosmoStat / CosmoStat/shapepipe

Clean up object size usage

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#644 1 comment 0 reactions 1 assignee View on GitHub

@martinkilbinger is already working on this.

Since Jul 20, 2023.

clean up
Dominant language
Python
Stars
18
Forks
14
Avg merge
8h 40m
Merged PRs (30d)
10

Description

Various estimators of object size are used throughout the code:

  • fwhm
  • sigma (e.g. from HSM moment measurement)
  • T = I_xx + I_yy (sum of second-order moments), also written as R^2, T approx 2 sigma^2

Units can be in pixels or arcsec/arcmin.

These should be unified and made clear.

Two functions to transform between some of those exist in sp_validation/galaxy.py, we should use and extend those.

In the code, replace hard-coded numbers 1.17741, 2.355.

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