# SIGMA space telescope - PR 78

> X-ray telescope launched as part of the Granat observatory

**Wikidata**: [Q54845217](https://www.wikidata.org/wiki/Q54845217)  
**Source**: https://4ort.xyz/entity/sigma-space-telescope-pr-78


## References

1. [Source](http://sigma-2.cesr.fr/sigma/Sigma.Home.html)
2. The SIGMA/Granat telescope: calibration and data reduction