# Excalibur: A Nonparametric, Hierarchical Wavelength Calibration Method for a Precision Spectrograph

> Research article (The Astronomical Journal, 2021) · cited 13× · AI/ML

**Wikidata**: [openalex:W3095982996](https://www.wikidata.org/wiki/openalex:W3095982996)  
**Source**: https://4ort.xyz/entity/excalibur-a-nonparametric-hierarchical-wavelength-calibration-method-for-a-precision-spectrograph