ESO Archive Frequently Asked Questions

CalSelector: What is the content of the association package?

A package, or more properly a dataset, contains a set of raw science files that should be processed together (e.g. a jitter sequence in the infrared, or a nodding sequence in spectroscopy), the raw (e.g. bias and flat frames, arc exposures, etc.) and static (e.g. arc line lists, standard star lists, etc.) calibrations needed to process them, an xml representation of the calibration cascade and, if available, excerpts from the observing night log.