http://dr5.lamost.org/v3/sas/fits/20160210/GAC100N40B1/spec-57429-GAC100N40B1_sp12-137.fits.gz
http://dr5.lamost.org/v3/sas/fits/20160210/GAC100N40B1/spec-57429-GAC100N40B1_sp11-116.fits.gz