SCALES is a high-contrast, infrared coronagraphic imager and integral field spectrograph (IFS) to be deployed behind the W.M. Keck Observatory adaptive optics system. A reflective optical design allows diffraction-limited imaging over a large wavelength range (1.0 - 5.0 microns). A microlens array-based IFS coupled with a lenslet reformatter ("slenslit") allow spectroscopy at both low (R = 35 - 250) and moderate (R = 2000 - 6500) spectral resolutions. The large wavelength range, diffraction-limited performance, high contrast coronagraphy and cryogenic operation present a unique optical design challenge. We present the full SCALES optical design, including performance modeling and analysis and manufacturing.
@article{arxiv.2208.11736,
title = {SCALES for Keck: Optical Design},
author = {Renate Kupke and R. Deno Stelter and Amirul Hasan and Arun Surya and Isabel Kain and Zackery Briesemeister and Jialin Li and Phil Hinz and Andrew Skemer and Benjamin Gerard and Daren Dillon and Christopher Ratliff},
journal= {arXiv preprint arXiv:2208.11736},
year = {2022}
}
Comments
SPIE Astronomical Telescopes and Instrumentation, 2022