;determination of wavelength(nm)
; wav (nm)
; pix (pixel) ( 0 - 511)

wav = a*pix + b

;for 2000 Mar - 2000 Oct
a=0.61804697
b=421.817057
sw=421.8
ew=737.6

;for 2000 Oct - 2005 Nov
a=0.6127118
b=448.637288
sw=448.6
ew=761.7

;for 2005 Dec - now (2008 mar)
a=0.61881881
b=416.460396
sw=416.5
ew=732.7


