NHK DATA file list
97/10/02

fc1_000 -> 035	dark filament 10830(3rd)
	G.C : 17.282	filter : RM90
	Focus : 74.0	ă : 329.7
	slit_w: 80	exp : 4.0s
	scan : 2"x35	bin : 1x1
	set : V

dfdrk4	dark 4sec