Search for bad calibrators

View the bad calibrators list

Service description

BadCal is an entry to the BadCalibrator database developed by the JMMC Working Group "catalogue of calibration sources" .

You have different way to access the database:

• A request using the name of a source (call of Simbad)
• An access to the full list (162) restricted to the basic parameters (simple list), or providing access to the full database (detailed list)
• Finally, a third button gives access to the Aladin applet

The BadCalibrator database VO service has been developed by the JMMC Working Group "catalogue of calibration sources" and is used by our SearchCal tool. The database itself stems from the one originally developed by the IAU working group on optical interferometry (J.D. Monnier, Univ. Michigan, then C. Hummel, ESO), and you can contribute to extend it by signaling new bad calibrators.