http://dr5.lamost.org/v3/sas/fits/20131214/GAC117N12V1/spec-56641-GAC117N12V1_sp06-175.fits.gz
http://dr5.lamost.org/v3/sas/fits/20131214/GAC117N12V1/spec-56641-GAC117N12V1_sp06-175.fits.gz
http://dr5.lamost.org/v3/sas/fits/20131214/GAC117N12V1/spec-56641-GAC117N12V1_sp06-175.fits.gz