OPAL accounts are used by the Astronomy community - for details please see the OPAL Users Guide.
In the DAP, OPAL accounts are used to
Data that is not embargoed is publicly available.
To log in as an OPAL user, click on the Sign in drop down at https://data.csiro.au/ and select OPAL:
If you do not have an OPAL account, register here. For more information about OPAL see the OPAL Users Guide.