ftp archive.stsci.edu and login as anonymous. cd /pub/hlsp/goods-n. From there you can navigate through the site to find the field and epoch of data of interest.
WGET
You can download whole directories of data using wget commands like:
wget -q -nH --cut-dirs=6 -r -l0 -c -N -np -R 'index*' -erobots=off http://archive.stsci.edu/pub/hlsp/candels/goods-n/gn01/v0.5/
1 The epochs are defined according to date ranges, which are described in
more detail in the observing schedule and tile maps, as well as the readme files that are provided with each epoch..