SEL_BSC extracts wavelength and flux fields from BSC_DATA.
IDL> sel_bsc,bsc_index,bsc_data,new_index,new_data,wave,flux,eflux
The selected index and data structures are returned in NEW_INDEX and NEW_DATA.
The wavelength, flux, and uncertainties in the flux are returned in the arrays
WAVE, FLUX, and EFLUX.
The following keywords are also accepted:
