# Comparison of automatic methods to detect sunspots in the Coimbra Observatory spectroheliograms

> Research article (Astronomy and Computing, 2020) · cited 24× · AI/ML

**Wikidata**: [openalex:W3021389554](https://www.wikidata.org/wiki/openalex:W3021389554)  
**Source**: https://4ort.xyz/entity/comparison-of-automatic-methods-to-detect-sunspots-in-the-coimbra-observatory-spectroheliograms