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Jeff Carlin

PROFILE

Jeff Carlin

Jeffrey Carlin developed and maintained data analysis and documentation workflows for the lsst/tutorial-notebooks and lsst/dp1_lsst_io repositories, focusing on reproducible scientific computing in astronomy. He built Jupyter Notebooks for stellar variability and photometric transformations, integrating Python scripting and SQL for data access and visualization. His work included refining FITS file handling, optimizing database queries, and standardizing catalog object naming conventions to align with IAU guidelines. Through rigorous metadata management, YAML-driven configuration, and technical writing, Jeffrey improved onboarding, reduced user confusion, and ensured reliable, up-to-date tutorials. His contributions demonstrated depth in scientific computing, data pipeline reliability, and documentation clarity.

Overall Statistics

Feature vs Bugs

65%Features

Repository Contributions

44Total
Bugs
6
Commits
44
Features
11
Lines of code
8,941
Activity Months9

Work History

March 2026

6 Commits • 1 Features

Mar 1, 2026

March 2026 monthly summary for lsst/tutorial-notebooks focusing on delivering practical photometric transformations workflows, tightening documentation, and ensuring reliable data access. Highlights include a new photometric transformations notebook with real-world usage, comprehensive notebook metadata cleanup for reproducibility, and a radius compliance fix to ECDFS data queries in line with external service constraints. These efforts improve usability, accuracy, and maintain business value by reducing user confusion and preventing data retrieval errors.

January 2026

6 Commits • 1 Features

Jan 1, 2026

January 2026: Delivered a new Stellar Variability Characterization Notebook in the lsst/tutorial-notebooks repository, featuring extensive data visualizations and rigorous metadata cleanup. The work included header corrections and readability improvements, with title-case normalization for the 305_2 section. Completed pre-commit hygiene and review-driven edits to ensure clean commits and consistent metadata. Overall impact: improved reproducibility, faster onboarding for researchers, and a more maintainable notebook that supports efficient stellar variability exploration. Technologies demonstrated: Jupyter notebooks, Python data visualization, metadata management, and Git-based collaboration with pre-commit checks and review workflows.

November 2025

1 Commits

Nov 1, 2025

November 2025 monthly summary: Targeted reliability improvement in tutorial notebooks. A bug fix was implemented to ensure the last verified run date is accurate across lsst/tutorial-notebooks, enhancing reproducibility and reducing user confusion. No new features were introduced this month; focus was on quality and stability.

October 2025

1 Commits

Oct 1, 2025

October 2025 monthly summary: Delivered stability improvements in Mobu.yaml processing for the lsst/tutorial-notebooks repository by excluding two problematic notebooks from GetTemplateTask, reducing build failures and unexpected behavior; aligns with ongoing CI reliability and smoother tutorial notebook workflows.

September 2025

6 Commits • 2 Features

Sep 1, 2025

September 2025 monthly summary focused on delivering data quality improvements and notebook processing reliability across two repositories (lsst/rtn-095 and lsst/tutorial-notebooks). Key outcomes include improved data products naming consistency for DP1, readability enhancements in documentation, and stabilization of notebook processing through Mobu YAML updates. These changes support DP1 data product reliability, easier onboarding, and more deterministic pipelines aligned with IAU naming conventions.

July 2025

2 Commits • 1 Features

Jul 1, 2025

July 2025: Delivered Data Preview 1 Catalog Object Naming Conventions Documentation for lsst/dp1_lsst_io, establishing standardized per-object ID naming (prefix + table ID + unique object ID) with examples and links to IAU specifications. This work improves data discoverability, catalog interoperability, and reduces ambiguity in object references across DP1 data products. No major bugs reported this month; focus remained on documentation, standards alignment, and long-term data usability. Key contributions include drafting the per-object ID section and adding the IAU specifications link, supported by relevant commit activity.

June 2025

17 Commits • 3 Features

Jun 1, 2025

June 2025 monthly summary for repository lsst/dp1_lsst_io focusing on documentation-driven feature delivery and quality improvements that enhance user onboarding, data access, and reproducibility.

May 2025

3 Commits • 2 Features

May 1, 2025

Concise May 2025 monthly summary highlighting business value and technical achievements across two repositories. Focused feature refinements improved data relevance and documentation clarity, while data access reliability in notebooks was strengthened to support up-to-date, reproducible workflows.

January 2025

2 Commits • 1 Features

Jan 1, 2025

January 2025: Focused on delivering concrete improvements to the pipelines_lsst_io coaddition workflow and ensuring documentation aligns with supported LSST pipelines versions. Key changes include a new pre-assembly step to select deep coadd visits, corrections to uber-calibration task references, and alignment of tutorials with LSST Science Pipelines v28_0_0. These updates reduce user confusion, improve calibration reliability, and ensure onboarding materials reflect current software.

Activity

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Quality Metrics

Correctness96.8%
Maintainability96.8%
Architecture95.8%
Performance95.0%
AI Usage20.4%

Skills & Technologies

Programming Languages

Jupyter NotebookLaTeXPythonRSTSQLYAMLpngrstsql

Technical Skills

AstronomyAstropyConfiguration ManagementData AnalysisDatabase Query OptimizationDocumentationFITS File HandlingJupyter NotebookJupyter NotebooksJupyter notebooksLSST Science PlatformPythonPython scriptingSQLScientific Computing

Repositories Contributed To

5 repos

Overview of all repositories you've contributed to across your timeline

lsst/dp1_lsst_io

Jun 2025 Jul 2025
2 Months active

Languages Used

RSTSQLpngrstsql

Technical Skills

Data AnalysisDatabase Query OptimizationDocumentationLSST Science PlatformSQLTechnical Writing

lsst/tutorial-notebooks

May 2025 Mar 2026
6 Months active

Languages Used

PythonYAML

Technical Skills

AstropyData AnalysisFITS File HandlingConfiguration ManagementJupyter NotebooksScientific Computing

lsst/rtn-095

Sep 2025 Sep 2025
1 Month active

Languages Used

LaTeX

Technical Skills

DocumentationTechnical Writing

lsst/pipelines_lsst_io

Jan 2025 Jan 2025
1 Month active

Languages Used

RSTrst

Technical Skills

DocumentationTechnical Writing

rubin-dp0/dp1-sci-prep-seminars

May 2025 May 2025
1 Month active

Languages Used

Jupyter NotebookPythonSQL

Technical Skills

AstronomyData AnalysisDocumentationSQL