ESO DOI Service

• Beccari, Giacomo [European Southern Observatory (ESO)]

https://archive.eso.org/doidownload/script/ELT-GSC

2026

European Southern Observatory (ESO)

Dataset/Dataset

Abstract: The ELT Guide Star Catalogue is the all-sky reference catalogue that will support guiding and adaptive-optics (AO) operations of ESO's Extremely Large Telescope (ELT), including MICADO and the MORFEO multi-conjugate AO module. The catalogue is built directly on the JWST Guide Star Catalogue. ELT-GSC is limited to objects with declination (Dec) lower than 30 deg and adds a small set of derived columns that are needed for ELT operations and have no equivalent in the source catalogue: synthetic 2MASS J, H and Ks magnitudes for sources with optical photometry but no measured near-infrared magnitudes; a flag identifying sources with sufficient photometric coverage to be treated as bona-fide stars, an operational effective temperature derived from broad-band colours, and two suitability flags marking objects that can be used as guide stars (GS) for telescope guiding and as natural guide stars (NGS) for AO wavefront sensing. This is a catalogue collection; no new observations are involved.

DataCurator: Valenti, Elena [European Southern Observatory (ESO)]

collection_name:ELT-GSC collection_type:Other data submission

References: https://archive.eso.org/ (URL)

Issued: 2026-07-01

FITS

Data Access Policy for ESO Data held in the ESO Science Archive Facility