# title = "BL 181: 316 l/mm"
# type = grating
# gmm = 316 groves/mm
# blaze = 7.396 deg
# reflectance = 0.75
# eff1 = KPNO/Gratings/BL181.1        # First order measured efficiency
# eff2 = KPNO/Gratings/BL181.2        # Second order measured efficiency
