ESCAPE project: testing active observing strategies for high-contrast imaging in space on the HiCAT testbed
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2024
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866916397314998272 |
|---|---|
| author | Lau, Alexis Choquet, Élodie Altinier, Lisa Laginja, Iva Soummer, Rémi Pueyo, Laurent Godoy, Nicolas Vigan, Arthur Mary, David |
| author_facet | Lau, Alexis Choquet, Élodie Altinier, Lisa Laginja, Iva Soummer, Rémi Pueyo, Laurent Godoy, Nicolas Vigan, Arthur Mary, David |
| contents | The Roman Space Telescope will be a critical mission to demonstrate high-contrast imaging technologies allowing for the characterisation of exoplanets in reflected light. It will demonstrate $10^{-7}$ contrast limits or better at 3--9 $λ/ D$ separations with active wavefront control for the first time in space. The detection limits for the Coronagraph Instrument are expected to be set by wavefront variations between the science target and the reference star observations. We are investigating methods to use the deformablel mirrors to methodically probe the impact of such variations on the coronagraphic PSF, generating a PSF library during observations of the reference star to optimise the starlight subtraction at post-processing. We are collaborating with STScI to test and validate these methods in lab using the HiCAT tested, a high-contrast imaging lab platform dedicated to system-level developments for future space missions. In this paper, we will present the first applications of these methods on HiCAT. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_11062 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | ESCAPE project: testing active observing strategies for high-contrast imaging in space on the HiCAT testbed Lau, Alexis Choquet, Élodie Altinier, Lisa Laginja, Iva Soummer, Rémi Pueyo, Laurent Godoy, Nicolas Vigan, Arthur Mary, David Instrumentation and Methods for Astrophysics The Roman Space Telescope will be a critical mission to demonstrate high-contrast imaging technologies allowing for the characterisation of exoplanets in reflected light. It will demonstrate $10^{-7}$ contrast limits or better at 3--9 $λ/ D$ separations with active wavefront control for the first time in space. The detection limits for the Coronagraph Instrument are expected to be set by wavefront variations between the science target and the reference star observations. We are investigating methods to use the deformablel mirrors to methodically probe the impact of such variations on the coronagraphic PSF, generating a PSF library during observations of the reference star to optimise the starlight subtraction at post-processing. We are collaborating with STScI to test and validate these methods in lab using the HiCAT tested, a high-contrast imaging lab platform dedicated to system-level developments for future space missions. In this paper, we will present the first applications of these methods on HiCAT. |
| title | ESCAPE project: testing active observing strategies for high-contrast imaging in space on the HiCAT testbed |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2409.11062 |