An optical shutter for the Euclid imager

Adrian M. Glauser; J. Amiaux; J.-L. Auguères; S. Lilly; A. Refregier

doi:10.1117/12.856957

22 July 2010 An optical shutter for the Euclid imager

Adrian M. Glauser, J. Amiaux, J.-L. Auguères, S. Lilly, A. Refregier

Proceedings Volume 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation; 77393K (2010) https://doi.org/10.1117/12.856957
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

We present a first design study of the shutter mechanism to be implemented on the visible channel of the Euclid imager. The main functionality of the shutter is to obscure the light during the detector read-out and flat field calibration. Hence, the major design drivers are the number of open/close cycles of 160,000 and the opening/closing time of 5 sec without introducing a too large uncompensated momentum disturbance. The current design foresees to use two fully redundant actuators, which drive the shutter via a lever system. In case of an actuator failure, the blocked actuator can be disengaged via a fail-safe system.

Citation Download Citation

Adrian M. Glauser, J. Amiaux, J.-L. Auguères, S. Lilly, and A. Refregier "An optical shutter for the Euclid imager", Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77393K (22 July 2010); https://doi.org/10.1117/12.856957

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