http://dr5.lamost.org/v3/sas/fits/20131125/GAC117N27B1/spec-56622-GAC117N27B1_sp04-131.fits.gz
http://dr5.lamost.org/v3/sas/fits/20131125/GAC117N27B1/spec-56622-GAC117N27B1_sp04-131.fits.gz
http://dr5.lamost.org/v3/sas/fits/20131125/GAC117N27B1/spec-56622-GAC117N27B1_sp04-131.fits.gz