# title = "BL 400: 158 l/mm"
# type = grating
# gmm = 158 groves/mm
# blaze = 3.444 deg
# reflectance = 0.80
# eff1 = KPNO/Gratings/BL400.1	# First order measured efficiency
# eff2 = KPNO/Gratings/BL400.2	# Second order measured efficiency
