# Notebook Tutorials

**URL:** https://discourse.fornax.sciencecloud.nasa.gov/c/helpdesk/tutorials/9.md

[Latest](https://discourse.fornax.sciencecloud.nasa.gov/latest.md) · [Categories](https://discourse.fornax.sciencecloud.nasa.gov/categories.md) · [Tags](https://discourse.fornax.sciencecloud.nasa.gov/tags.md)

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## [About the Notebook Tutorials category](https://discourse.fornax.sciencecloud.nasa.gov/t/about-the-notebook-tutorials-category/22)

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**Author:** [@fornax-staff](https://discourse.fornax.sciencecloud.nasa.gov/u/fornax-staff)\
**Replies:** 1\
**Last updated:** [September 13, 2025, 3:13am UTC](https://discourse.fornax.sciencecloud.nasa.gov/t/about-the-notebook-tutorials-category/22 "2025-09-13T03:13:49Z")

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This category is intended for questions about how the Fornax notebook tutorials work and how to use them. The notebooks are housed in the GitHub repo nasa-fornax/fornax-demo-notebooks, rendered at Fornax Tutorial Noteboo…

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## [Incorrect links in nustar tutorial](https://discourse.fornax.sciencecloud.nasa.gov/t/incorrect-links-in-nustar-tutorial/678)

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**Author:** [@hmoon](https://discourse.fornax.sciencecloud.nasa.gov/u/hmoon)\
**Replies:** 1\
**Last updated:** [February 12, 2026, 4:57pm UTC](https://discourse.fornax.sciencecloud.nasa.gov/t/incorrect-links-in-nustar-tutorial/678 "2026-02-12T16:57:01Z")

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I ran into an error in the first kernel of “section 5. Extracting the spectrum” in the NuSTAR analysis tutorial. When it gets to the stage of running numkarf, the link to the psf files is incorrect. It fails to find the …

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## [CFG2 cross matching notebook - dependency conflicts, issues at the end](https://discourse.fornax.sciencecloud.nasa.gov/t/cfg2-cross-matching-notebook-dependency-conflicts-issues-at-the-end/357)

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**Author:** [@matteobachetti](https://discourse.fornax.sciencecloud.nasa.gov/u/matteobachetti)\
**Replies:** 2\
**Last updated:** [September 16, 2025, 8:01pm UTC](https://discourse.fornax.sciencecloud.nasa.gov/t/cfg2-cross-matching-notebook-dependency-conflicts-issues-at-the-end/357 "2025-09-16T20:01:50Z")

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I tried CFG2\_cross\_matching.md and got an error installing dependencies: error: subprocess-exited-with-erroe × Building wheel for matplotlib (pyproject.toml) did not run successfully. (…) Changing requirements.txt …

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## [Uploading notebooks](https://discourse.fornax.sciencecloud.nasa.gov/t/uploading-notebooks/308)

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**Author:** [@harej10](https://discourse.fornax.sciencecloud.nasa.gov/u/harej10)\
**Replies:** 1\
**Last updated:** [September 10, 2025, 3:45pm UTC](https://discourse.fornax.sciencecloud.nasa.gov/t/uploading-notebooks/308 "2025-09-10T15:45:12Z")

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Not sure if this is a bug or intended behavior, but I uploaded my own notebooks to try to run them on Fornax. However, when I open them by double clicking it defaults to a python3 environment instead of the heasoft envir…