Tutorials

The following resources provide worked examples for common science tasks using FastSpecFit and the broader DESI data ecosystem.

Current Notebooks

These Jupyter notebooks are included in the FastSpecFit repository under doc/nb/ and are compatible with the latest 3.4.0 release:

• tutorial-fastspecfit.ipynb — running fastspec and fastphot interactively and reading the results.

• tutorial-kcorrections.ipynb — computing custom K-corrections and rest-frame photometry from the best-fitting SED model.

• tutorial-vmax.ipynb — estimating \(V_{\rm max}\) for luminosity function calculations.

Legacy Notebooks

These notebooks target specific public data releases and may not be compatible with the current version of FastSpecFit.

• tutorial-fastspec-and-observed-spectra.ipynb — comparing fastspec model spectra against observed DESI spectra. Written for the Fuji VAC (EDR) (FastSpecFit v2.x).

DESI Tutorials

For a broader introduction to working with DESI data — including how to access data, navigate the file system, and work with DESI spectra — see the DESI tutorials repository. The Getting Started and Digging Deeper collections are particularly relevant for new users.