Description

This recipe is used to create a text log summarising the file headers of a group of observations. It is often used to create a log file describing a whole night's worth of observations.

For full details, see the documentation for the spectroscopy _NIGHT_LOG_ primitive.

This recipe calls the primitive in such a way that the log file appears in $ORAC_DATA_IN.

An `on-the-fly' night log is created in $ORAC_DATA_OUT as spectroscopy data is reduced by the pipeline. This is done by a call to _NIGHT_LOG_ from _SPECTROSCOPY_HELLO_.