| Autor: |
Alina Kiessling, Milan Mandic, Oscar S. Alvarez-Salazar |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave. |
| DOI: |
10.1117/12.2315545 |
| Popis: |
This paper provides an overview of a feasible design architecture that satisfies the strict pointing requirements for the 2020 Astrophysics Decadal Survey Habitable Exoplanet Observatory (HabEx) Architecture A mission concept. Microthruster technology has matured significantly in recent years, with high specific impulse and low-level disturbance making microthrusters the prime candidate for high-precision pointing in upcoming space telescope missions. HabEx’s Architecture A concept utilizes microthrusters as the main actuators for the attitude control system pointing mode and a fine steering piezo-electric-operated mirror is utilized in the inner finepointing loop of the attitude control system. Sensing is undertaken using a high-resolution, low-noise focal-plane camera that can support high readout speeds (> 100 Hz), in addition to a state-of-the-art low-order wavefront sensor, which is currently under technology development for NASA’s Wide Field Infrared Survey Telescope (WFIRST). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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