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Paper detail

A Visible-light Lyot Coronagraph for SCExAO/VAMPIRES

We describe the design and initial results from a visible-light Lyot coronagraph for SCExAO/VAMPIRES. The coronagraph is comprised of four hard-edged, partially transmissive focal plane masks with inner working angles of 36 mas, 55 mas, 92 mas, and 129 mas, respectively. The Lyot stop is a reflective, undersized design with a geometric throughput of 65.7%. Our preliminary on-sky contrast is 1e-2 at 0.1" to 1e-4 at 0.75" for all mask sizes. The coronagraph was deployed in early 2022 and is available for open use.

preprint2022arXivOpen access
Miles LucasMichael BottomOlivier GuyonJulien LoziBarnaby NorrisVincent DeoSebastien VievardKyohoon AhnNour SkafPeter Tuthill
astro-ph.IM
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Miles LucasMichael BottomOlivier GuyonJulien LoziBarnaby NorrisVincent DeoSebastien VievardKyohoon AhnNour SkafPeter Tuthill

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