We describe the current on-sky performance of the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument on the Subaru telescope on Maunakea, Hawaii. SCExAO is continuing to advance its AO performance, delivering H band Strehl ratios in excess of 0.9 for bright stars. We describe new advances with SCExAO's wavefront control that lead to a more stable corrected wavefront and diffraction-limited imaging in the optical, modifications to code that better handle read noise suppression within CHARIS, and tests of the spectrophotometric precision and accuracy within CHARIS. We outline steps in the CHARIS Data Processing Pipeline that output publication-grade data products. Finally, we note recent and upcoming science results, including the discovery of new directly-imaged systems and multiwavelength, deeper characterization of planet-forming disks, and upcoming technical advances that will improve SCExAO's sciencec capabilities.
@article{arxiv.2012.05241,
title = {On-sky performance and recent results from the Subaru coronagraphic extreme adaptive optics system},
author = {Thayne Currie and Olivier Guyon and Julien Lozi and Ananya Sahoo and Sebastien Vievard and Vincent Deo and Jeffrey Chilcote and Tyler Groff and Timothy Brandt and Kellen Lawson and Nour Skaf and Frantz Martinache and N. Jeremy Kasdin},
journal= {arXiv preprint arXiv:2012.05241},
year = {2020}
}
Comments
20 pages, 11 Figures. Proc. SPIE 11448, Astronomical Telescopes + Instrumentation 2020, in press