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jeffcarlin committed Jan 24, 2025
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In this report, we characterize the performance of the Rubin Observatory Science Pipelines Version 28.0.0. We illustrate the performance via metrics that are measured on the HSC-RC2 dataset. RC2 consists of 3 tracts of data taken from the HSC-SSP survey, and selected to provide a means of testing various ``pathological'' cases (e.g., difficult astrometric solutions, extremely good seeing that does not provide a well-sampled PSF, difficult fields for deblending, and large galaxies, among others). These three tracts each contain between 112--149 visits split between the HSC-G, HSC-R, HSC-I, HSC-Z, and HSC-Y (\emph{grizy}) filters.

Between w\_2024\_16 (the source for pipelines version 27) and w\_2024\_42 (v28 source), most major changes in the science pipelines have been in supporting packages and not to algorithms that dramatically affected the Data Release processing metrics. As of v28, the streak-detection algorithm introduced in v21 operates on image differences instead of direct images. This algorithm masks pixels affected by streaks (e.g., satellites or other trailed sources of non-astrophysical origin). Previously, streaks were only removed during coaddition. ANYTHING ELSE TO HIGHLIGHT?
Between w\_2024\_16 (the source for pipelines version 27) and w\_2024\_42 (v28 source), most major changes in the science pipelines have been in supporting packages and not to algorithms that dramatically affected the Data Release processing metrics. As of v28, the streak-detection algorithm introduced in v21 operates on image differences instead of direct images. This algorithm masks pixels affected by streaks (e.g., satellites or other trailed sources of non-astrophysical origin). Previously, streaks were only removed during coaddition.

Additional new features in this release include:
\begin{itemize}
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