'spectrograph': 'shane_kast_red'
'filenames': ['ZTF18abfzixe_kast_ut190829_01.fits', 'ZTF18abfzixe_kast_ut190829_02.fits']
'a':
    'object': 'ZTF18abfzixe'
    'outfile': 'ZTF18abfzixe.hdf5'