تقرير
Segment-level thermal sensitivity analysis for exo-Earth imaging
| العنوان: | Segment-level thermal sensitivity analysis for exo-Earth imaging |
|---|---|
| المؤلفون: | Sahoo, Ananya, Laginja, Iva, Pueyo, Laurent, Soummer, Remi, Coyle, Laura E., Knight, J. Scott, East, Matthew |
| سنة النشر: | 2022 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Instrumentation and Methods for Astrophysics |
| الوصف: | We present a segment-level wavefront stability error budget for space telescopes essential for exoplanet detection. We use a detailed finite element model to relate the temperature gradient at the location of the primary mirror to wavefront variations on each of the segment. We apply the PASTIS sensitivity model forward approach to allocate static tolerances in physical units for each segment, and transfer these tolerances to the temporal domain via a model of the WFS&C architecture in combination with a Zernike phase sensor and science camera. We finally estimate the close-loop variance and limiting contrast for the segments' thermo-mechanical modes. Comment: 13 pages, 7 figures, appeared in the Proceedings of SPIE Astronomical Telescopes + Instrumentation, 2022 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1117/12.2630592 |
| URL الوصول: | http://arxiv.org/abs/2209.06762 |
| رقم الأكسشن: | edsarx.2209.06762 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1117/12.2630592 |
|---|