Conceptual phase A design of a cryogenic shutter mechanism for the SAFARI flight instrument

摘要

We present a conceptual design for a cryogenic optical mechanism for the SAFARI instrument. SAFARI is a longwavelength (34-210 micron) Imaging Fourier Transform Spectrometer (FTS) to fly as an ESA instrument on the JAXASPICA mission projected to launch in 2021. SPICA is a large 3m class space telescope which will have an operatingtemperature of less than 7K. The SAFARI shutter is a single point of failure flight mechanism designed to operate inspace at a temperature of 4K which meets redundancy and reliability requirements of this challenging mission. Theconceptual design is part of a phase A study led by ETH Institute for Astronomy and conducted by RUAG Space AG.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.