Johnson-Cousins UBVRI filter curves

filter curves of WiFSIP Johnson Cousins UBVRI filters
Johnson-Cousins UBVRI filter curves

Transmission of Johnson-Cousins filters available for WiFSIP

Download ascii data for filters:

  • U: Effective central wavelength 365.6nm, FWHM 34.0nm
  • B: Effective central wavelength 435.3nm, FWHM 78.1nm
  • V: Effective central wavelength 547.7nm, FWHM 99.1nm
  • R: Effective central wavelength 634.9nm, FWHM 106.56nm
  • I: Effective central wavelength 879.7nm, FWHM 289.2nm

(effective central wavelength & FWHM: filter transmission mimics a 100% at ECW@FWHM)