Ms. Alexa Rizika Profile

Alexa Rizika

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Publications (2)

Proceedings Article | 5 October 2023 Poster + Paper

Testing and performance of IFS upgrades for GPI 2.0

Dillon Peng, Jeffrey Chilcote, Quinn Konopacky, Randall Hamper, Joel Burke, Brian Sands, Matthew Engstrom, Abigail Karaszewski, Rebecca Boyle, Mary Anne Limbach, Alexandra Greenbaum, Anand Sivaramakrishnan, Alexa Rizika, Saavidra Perera, Clarissa Do Ó, Jayke Nguyen, Bruce Macintosh, Joeleff Fitzsimmons, Christian Marois, Fredrik Rantakyrö, Arlene Aleman, Jérôme Maire, Robert De Rosa, Emiel Por, Dmitry Savransky, Meiji Nguyen, Marshall Perrin, Remi Soummer, Laurent Pueyo, Bryony Nickson, Eckhart Spalding

Proceedings Volume 12680, 126801Y (2023) https://doi.org/10.1117/12.2677675

KEYWORDS: Prisms, Gemini Planet Imager, Iterated function systems, Optical filters, Spectral resolution, Optical alignment, Gemini Observatory, Design and modelling, Wavefront sensors

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Proceedings Article | 29 August 2022 Poster + Paper

The iLocater cryostat and thermal control system: enabling extremely precise radial velocity measurements for diffraction-limited spectrographs

Jonathan Crass, Nandini Sadagopan, Matthew Misch, Alexa Rizika, Brian Sands, Matthew Engstrom, Justin Crepp, James Smous, Jeffrey Chilcote, Louis Fantano, Mike VanSickle, Frederick Hearty, Matthew Nelson

Proceedings Volume 12184, 121844X (2022) https://doi.org/10.1117/12.2630199

KEYWORDS: Spectrographs, Thermal modeling, Cryocoolers, Performance modeling, Computer aided design, Temperature metrology, Aluminum, Exoplanets, Cryogenics, Vacuum equipment

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