http://dr5.lamost.org/v3/sas/fits/20160302/GAC104N42B2/spec-57450-GAC104N42B2_sp01-117.fits.gz
http://dr5.lamost.org/v3/sas/fits/20160302/GAC104N42B2/spec-57450-GAC104N42B2_sp01-117.fits.gz
http://dr5.lamost.org/v3/sas/fits/20160302/GAC104N42B2/spec-57450-GAC104N42B2_sp01-117.fits.gz