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Knowledgebase: Archive & Data Retrieval
How can I query the calibrator database that ALMA uses?
Posted by John Hibbard, Last modified by Kazuya Saigo on 12 February 2019 03:24 PM

The ALMA calibrator database can be directly queried through a web form at

Alternatively, you can query the ALMA calibrator database from the OT in this way:

  • Open up the OT and create a Science Goal (or use an existing Science Goal)
  • Go to the "Calibration Setup" of the Science Goal 
  • Select "User Defined Calibration"
  • Select "Add fixed calibrator" and pick e.g. bandpass or phase

This brings another interface.

  • Select "Sideral Target"
  • Click "Select from Source Catalog" 

This brings up a query interface you can use to find calibrators and their fluxes with dates.

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