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Design and alignment of the MIPAS focal plane system

Author: Smorenburg, C. · Visser, H. · Moddemeijer, K.
Publisher: SPIE
Place: Bellingham, USA
Institution: Technisch Physische Dienst TNO - TH
Source:Braat, J.J.M., Proceedings SPIE, Design and Engineering of Optical Systems, 23 August 1996, Glasgow, Scotland, UK, 2774, 506-516
Identifier: 527211
Keywords: Electronics · Optical design · Michelson interferometer · Alignment


The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) is selected by ESA for the ENVISAT-mission, scheduled for launch in 1999. The instrument will measure the concentration of atmospheric trace gases in the earth atmosphere in a spectral region from 4.15-14.6 rim. MIPAS consists of scan mirrors, a telescope, a Michelson Interferometer, an optical reducer and a focal plane assembly. The optical reducer consists of a 2 concave and 1 convex mirror system. The focal plane assembly consists of a configuration of mirrors and dichroics, with which the spectral range is divided in 4 spectral bands. TNO Institute of Applied Physics has designed the optical/mechanical system and after manufacturing of the components has aligned the system with high accuracy. The design and alignment of this system is described.