fs = FileSet.find('mp48sc83h')
file_name = 'tmp/uploads/mp/48/sc/83/letz_01_0020_019.tif'
service = Hydra::Works::CharacterizationService.new(fs, file_name, {})

fits_output = service.send(:extract_metadata, file_name)
terms = service.send(:parse_metadata, fits_output)