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Additional narrow bandpass steep edge optical filters for the JAST/T80 telescope instrumentation

The Observatorio Astrofisico de Javalambre in Spain observes with its telescope galaxies in the Local Universe plans to perform a multi-band survey, where optical filters are needed. Different filters with a full width half maximum between 10-20 nm with central wavelengths at 395 nm, 410 nm, 430 nm, 515 nm, and an average transmission Tave larger than 85 % in the passband and blocking from 250 nm to 1050 nm of OD5 (T < 10-5) will be shown. The edges are steep for a narrow transition from 5 % to 80 % and the transmitted wavefront error of the optical filter are less than λ/2 over an aperture > 100 mm.