For Astronomers
wget --progress=bar -nH --no-check-certificate --cut-dirs=6 -r -l0 -c -N -np -R 'index*' -erobots=off --retr-symlinks https://heasarc.gsfc.nasa.gov/FTP/nustar/data/<archive>/YY/T/SeqID/
 
where
  • <archive>  is either  encrypted  or  obs  (public)
  • YY  is the program type equivalent to extended mission year (e.g. 06 is ~2020)
  • T  is the source category (e.g. 6 is Active galaxies)
  • SeqID  is the 11 digit sequenceID of the observation
for more information see the explanation of the sequenceID numbering in the numaster table.
 
For example for SequenceID 60002022016 (observation of PKS 2155-304 in 2013)
 
wget --progress=bar -nH --no-check-certificate --cut-dirs=6 -r -l0 -c -N -np -R 'index*' -erobots=off --retr-symlinks https://heasarc.gsfc.nasa.gov/FTP/nustar/data/obs/00/6/60002022016/