http://dr5.lamost.org/v3/sas/fits/20111109/B7503/spec-55875-B7503_sp14-083.fits.gz
http://dr5.lamost.org/v3/sas/fits/20111109/B7503/spec-55875-B7503_sp14-083.fits.gz
http://dr5.lamost.org/v3/sas/fits/20111109/B7503/spec-55875-B7503_sp14-083.fits.gz