iacob ivo://iacvo/iacob Instituto de Astrofisica de Canarias (IAC) - Sergio Simon Sergio Simon spectroscopy OB-stars multi-epoch optical spectra from FIES@NOT and Hermes@Mecator at ORM/La Palma http://research.iac.es/proyecto/iacob/iacobcat/ http://ocan.iac.es:8080/iacob/jsp/ssap.jsp? query pointed archival ICRS