AO4ELT5 Proceedings

Adaptive Optics Program Update at TMT

Boyer, Corinne (TMT)

The TMT first light Adaptive Optics (AO) facility consists of the Narrow Field Infra-Red AO System (NFIRAOS), the associated Laser Guide Star Facility (LGSF) and the AO Executive Software (AOESW). NFIRAOS is a 60 x 60 laser guide star (LGS) multi-conjugate AO (MCAO) system, which provides uniform, diffraction-limited performance in the J, H, and K bands over 17-34 arc sec diameter fields with 50 per cent sky coverage at the galactic pole, as required to support the TMT science cases. NFIRAOS includes two deformable mirrors, six laser guide star wavefront sensors, one high order Pyramid WFS for natural guide star AO, up to three low-order, IR, natural guide star on-instrument wavefront sensors (OIWFS) within each client instrument, and up to four guide windows on the science detectors (ODGW). The first light LGSF system includes six sodium lasers required to generate the NFIRAOS laser guide stars. In this paper, we will provide an update on the progress in designing, prototyping and fabricating the TMT first light AO systems and their components over the last two years. This will include the final design activities for NFIRAOS, preliminary design activities for the LGSF and AOESW, final design and prototyping activities for the deformable mirrors, final design and fabrication activities for the visible detectors, preliminary design and prototyping activities for the NFIRAOS visible cameras, and final design activities for the NFIRAOS Real Time Controller (RTC). Comprehensive and detailed AO modeling is also continuing to support the design and development of the first light AO facility.

DOI: 10.26698/AO4ELT5.0131- Proceeding PDF

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