Fabrication of Pupil Masks for a New Infrared Exoplanet Imager at Keck Observatory
Affiliation
Department of Astronomy, University of ArizonaIssue Date
2022-08-29
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SPIECitation
Jialin Li, Andrew Skemer, Maaike A. M. van Kooten, Renate Kupke, Nicholas MacDonald, "Fabrication of pupil masks for a new infrared exoplanet imager at Keck Observatory," Proc. SPIE 12185, Adaptive Optics Systems VIII, 121858N (29 August 2022); https://doi.org/10.1117/12.2630622Rights
© 2022 SPIE. (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
The Slicer Combined with Array of Lenslets for Exoplanet Spectroscopy (SCALES) is an instrument being designed to perform direct imaging of exoplanets in the mid-infrared (2-5 µm) with the Adaptive Optics System of W.M. Keck Observatory. To eliminate unwanted thermal infrared radiation, SCALES utilizes both a cold stop for excluding background radiation and a vector vortex coronagraph with Lyot stops for starlight suppression. Optimal geometric masks have been designed. We simulate the propagation of light through the Lyot plane and analyze the on-axis images of stars in the K, L, and M band for the performance of the Lyot stops. Additionally, finalized cold stop and Lyot stop designs are presented along with evaluations on the effects of manufacturing tolerances and tilt in pupil planes caused by off-axis parabolic mirror relays. © 2022 SPIE.Note
Immediate accessISSN
0277-786XISBN
978-151065351-1Version
Final Published Versionae974a485f413a2113503eed53cd6c53
10.1117/12.2630622