ESO Data Interface Control

ESO official data interface specifications are defined and maintained by the ESO Data Interface Control Board (DICB).
The detailed data interface specifications are described in context dependent data dictionaries. There exists a dictionary for each instrument, telescope, etc.
The format of the ESO Data Dictionaries is described in chapter 7 of the Data Interface Control Document.

Released Dictionaries

Released dictionaries can be obtained upon request. Please contact dicb at

Data Interface Specification

Data Interface Control Document v.6 (ESO document designation: ESO-­044156, old designation: GEN-SPE-ESO-19400-0794) is the official version of the document, released on 21 June 2016. Version 7 is in preparation, with expected release in Q1 2022. Interested parties can request older versions of the DIC Document or (if available) drafts of the new versions by sending a request to DICB.

Useful links

The ESO Data Interface Control Board is composed of members from the Instrumentation Division, Software Development Division, Data Management Division, Archive Facility and La Silla Paranal Observatory.