TY  - CONF
A1  - Freudling, Maximilian
A1  - Grzesik, Andreas
A1  - Erhard, Markus
A1  - Gerhards, Maximilian
A1  - Leitz, Sinje
A1  - Verpoort, Sven
A1  - Wittrock, Ulrich
A1  - Hallibert, Pascal
T1  - Space-qualified piezo based deformable mirror for future instruments with active optics
T2  - Proceedings of the International Conference on Space Optics (ICSO)
N2  - This paper presents the results of the technology development project “Enabling Technologies for Piezo-Based Deformable Mirrors in Active Optics Correction Chains” conducted by OHB System AG together with its partner Münster University of Applied Sciences (MUAS). The project was funded by ESA within their General Support Technology Programme 
(GSTP). 
We address in this paper mainly the definition, flow-down and verification of the requirements for the Deformable Mirror (DM). The requirements were derived from a set of real space mission applications. The deformation of the mirror is performed by piezo-ceramic actuators in an unimorph configuration. The finally developed DM is able produce Zernike modes with a stroke of several tens of µm over a clear optical aperture of 50 mm in diameter. It underwent successfully a full environmental qualification campaign including thermal cycling, shock- and vibration testing, as well as exposure to 
proton and γ–ray radiation. Thermal and performance tests were performed in the temperature range from 100 K to 300 K. 
Furthermore, the DM sustained all vibration (random 17.8 g RMS and sinus) and shock (300 g) testing. Thereby all criticalities which were identified a previous study have been overcome successfully.  
A Technology Readiness Level (TRL) of 5 is reached, as the component has been validated in relevant environment. Based on the high level of maturity, this deformable mirror is now ready for the incorporation in future flight instruments. The achieved TRL of 5 is sufficient for the status of a PDR at payload level and gives thus a very good basis for all kinds of potential B2, C/D payload developments.
KW  - deformable mirror
KW  - active optics
KW  - space qualification
KW  - space telescopes
KW  - adaptive optics
Y1  - 2021
UR  - https://www.hb.fh-muenster.de/opus4/frontdoor/index/index/docId/13741
UR  - https://nbn-resolving.org/urn:nbn:de:hbz:836-opus-137410
UR  - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11852/1185231/Space-qualified-Piezo-Based-Deformable-Mirror-for-future-Instruments-with/10.1117/12.2599467.full
VL  - 11852
SP  - 1185231-11
ER  -