Stellar Double Coronagraph: a multistage coronagraphic platform at Palomar observatory
Michael Bottom, J. Chris Shelton, James K. Wallace, Randall Bartos,, Jonas Kuhn, Dimitri Mawet, Bertrand Mennesson, Rick Burruss, Eugene Serabyn
TL;DR
The Stellar Double Coronagraph (SDC) at Palomar Observatory is a versatile, multistage coronagraphic platform designed to enhance high-contrast imaging, featuring multiple configurations and wavefront control for improved small-angle contrast.
Contribution
This paper introduces the SDC instrument, a novel multistage coronagraphic platform with flexible configurations and wavefront control, tailored for the Palomar Hale telescope.
Findings
Successful implementation of multiple vortex coronagraphs in series
Enhanced contrast at small angular separations demonstrated
Early science results show improved imaging capabilities
Abstract
We present a new instrument, the "Stellar Double Coronagraph" (SDC), a flexible coronagraphic platform. Designed for Palomar Observatory's 200" Hale telescope, its two focal and pupil planes allow for a number of different observing configurations, including multiple vortex coronagraphs in series for improved contrast at small angles. We describe the motivation, design, observing modes, wavefront control approaches, data reduction pipeline, and early science results. We also discuss future directions for the instrument.
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