Paper 14145-67
Paper 14145-67
High-precision high-accuracy astrometry for the Habitable World Observatory
8 July 2026 • 17:00 - 17:20 CEST | Room B4-M3
Abstract
We present a comprehensive system analysis for an instrument onboard the Habitable Worlds Observatory (HWO), designed for high-precision, high-accuracy differential astrometry. The analysis integrates the definition of the mission profile, the instrumental concept architecture, and an error budget that breaks down the key contributors to the sub-µas precision required for a single measurement. The proposed architecture of the instrument concept is derived from error budget and mission constraints based on a large visible detector array composed of an assembly of multiple CMOS sensor chips resulting in an overall gigapixel focal plane, with a technological maturation plan leading to TRL 5 for the Mission Consolidation review in 2029.
Presenter
CEA-IRFU (France)
Jerome Amiaux has been involved in major Space and Ground astronomy missions over the last 25 years in the role of system engineer. From the MIRI Imager on JWST to the Euclid Mission, he is now following the performance of the Ariel IR Spectrometer. He contributed to the 4MOST spectrometer on VISTA and to HARMONI instrument on the E-ELT during his seconded years at ESO. He is leading the team proposing an astrometry instrument on-board the HWO mission.