http://dr5.lamost.org/v3/sas/fits/20131219/GAC104N42V2/spec-56646-GAC104N42V2_sp04-069.fits.gz
http://dr5.lamost.org/v3/sas/fits/20131219/GAC104N42V2/spec-56646-GAC104N42V2_sp04-069.fits.gz
http://dr5.lamost.org/v3/sas/fits/20131219/GAC104N42V2/spec-56646-GAC104N42V2_sp04-069.fits.gz