The following shell command was used to suss out and download all
image URLs on the main page of the GOES-R website:

curl -s http://www.goes-r.gov/multimedia/ground.html \
  | grep 'href="/multimedia/originalImageCopies' \
  | sed 's/.*href="\([^"]*\)".*/\1/' \
  | uniq \
  | awk '{print "http://www.goes-r.gov" $0}' \
  | xargs wget