22 July 2016 First results on narrow bandpass steep edge optical filters for the JST/T250 telescope instrumentation
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Abstract
The Observatorio Astrofisico de Javalambre in Spain will conduct an all-sky astronomical surveys using multi-bands, where optical filters are needed. 54 narrow bandpass (FWHM = 14.5 nm) filters will continuously populate the spectrum between 370 to 920 nm with 10.0 nm steps. Here results on 2 filters with center wavelength of 460 nm and 470 nm and blocking from 250 to 1050 nm with OD5 will be shown. The filters have a maximum transmission of larger than 85% and a transmitted wavefront error of better than λ/2 over an aperture >~ 100mm.
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S. Reichel, S. Reichel, U. Brauneck, U. Brauneck, S. Bourquin, S. Bourquin, A. Marín-Franch, A. Marín-Franch, } "First results on narrow bandpass steep edge optical filters for the JST/T250 telescope instrumentation", Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 99123A (22 July 2016); doi: 10.1117/12.2232316; https://doi.org/10.1117/12.2232316
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