Cooled Filters 16-42µm Wavelength For FIR Astronomy

J S Seeley, R Hunneman, A Whatley

SPIE Proceedings, 253, Pages 266-273 (1980)

Abstract

The design and manufacture of dielectric-film interference filters for cooled FIR astronomy is described. The bands are 16.5-21.5µm, 17.5-19.5µm, 19.5-21.5µm and 27µm cut on. The films are PbTe/CdSe and the substrates are CdTe (some 1/2 mm thick), without absorption in the region: KRS-6 films are used for antireflection.

DOI: 10.1117/12.959521

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