6U CubeSat deployable telescope for optical Earth observation and astronomical optical imaging - ONERA - Office national d'études et de recherches aérospatiales Accéder directement au contenu
Communication Dans Un Congrès Année : 2022

6U CubeSat deployable telescope for optical Earth observation and astronomical optical imaging

Télescope déployable pour un cubesat 6U pour l'observation de la Terre et l'imagerie astronomique

Résumé

Available volumes of nanosats such as CubeSats impose physical limits to the telescope diameter, limiting achievable spatial resolution and photometric capability. For example, a 12U CubeSat typically only has sufficient volume to host a 20 cm diameter monolithic telescope. In this paper, we present recent advances in deployable optics to host a 30 cm+ diameter telescope in a 6U CubeSat, with a volume of 4U dedicated to the payload and 2U to the satellite bus. To reach this high level of compactness, we fold the primary and secondary mirrors for launch, which are then unfolded and aligned in space. Diffraction-limited imaging quality in the visible part of the spectrum is achieved by controlling each mirror segment in piston, tip, and tilt. In this paper, we first describe overall satellite concept, we then report on the optomechanical design of the payload to deploy and adjust the mirrors. Finally, we discuss the automatic phasing of the primary to control the final optical quality of the telescope.

Dates et versions

hal-03940692 , version 1 (16-01-2023)

Identifiants

Citer

Noah Schwartz, William Brzozowski, Zeshan Ali, Maria Milanova, Katherine Morris, et al.. 6U CubeSat deployable telescope for optical Earth observation and astronomical optical imaging. SPIE Astronomical Telescopes + Instrumentation, Jul 2022, Montréal, Canada. ⟨10.1117/12.2627248⟩. ⟨hal-03940692⟩

Collections

ONERA
10 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More