☆ 4.4 Article

DARKNESS: A Microwave Kinetic Inductance Detector Integral Field Spectrograph for High-contrast Astronomy

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC (2018)

Journal

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC

Volume 130, Issue 988, Pages -

Publisher

IOP PUBLISHING LTD

DOI: 10.1088/1538-3873/aab5e7

Keywords

instrumentation: adaptive optics; instrumentation: detectors; instrumentation: spectrographs; Instrumentation: coronagraphs; planets and satellites: detection

Categories

Astronomy & Astrophysics

Funding

DARKNESS
NSF ATI [AST-1308556]
NASA Office of the Chief Technologist's Space Technology Research Fellowships (NSTRF)
Fermi Research Alliance, LLC [DE-AC02-07CH11359]
U.S. Department of Energy, Office of Science, Office of High Energy Physics

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Abstract

We present DARKNESS (the DARK-speckle Near-infrared Energy-resolving Superconducting Spectrophotometer), the first of several planned integral field spectrographs to use optical/near-infrared Microwave Kinetic Inductance Detectors (MKIDs) for high-contrast imaging. The photon counting and simultaneous low-resolution spectroscopy provided by MKIDs will enable real-time speckle control techniques and post-processing speckle suppression at frame rates capable of resolving the atmospheric speckles that currently limit high-contrast imaging from the ground. DARKNESS is now operational behind the PALM-3000 extreme adaptive optics system and the Stellar Double Coronagraph at Palomar Observatory. Here, we describe the motivation, design, and characterization of the instrument, early on-sky results, and future prospects.

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Proceedings Paper Instruments & Instrumentation

First tests of a 1 megapixel near-infrared avalanche photodiode array for ultra-low background space astronomy

Charles-Antoine Claveau, Michael Bottom, Shane Jacobson, Klaus Hodapp, Aidan Walk, Markus Loose, Ian Baker, Egle Zemaityte, Matthew Hicks, Keith Barnes, Richard Powell, Ryan Bradley, Eric Moore

Summary: The HgCdTe linear-mode avalanche photodiode array aims to provide a 1kx1k pixel format near-infrared detector suitable for ultra-low background astronomical applications. The Institute for Astronomy (IfA) at the University of Hawaii has partnered with Leonardo Company to develop this device and conducted tests at their cryogenic testbed.

X-RAY, OPTICAL, AND INFRARED DETECTORS FOR ASTRONOMY X (2022)

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Proceedings Paper Astronomy & Astrophysics

Residual Wavefront Control of Segmented Mirror Telescopes

Sam Ragland, Peter Wizinowich, Maaike Van Kooten, Michael Bottom, Ben Cavin, Michael Fitzgerald, Philip Hinz, Rebecca Jensen-Clem, Dimitri Mawet, Eliad Peretz

Summary: The article explores uncorrected residual wavefront errors in adaptive optics systems, presenting a new residual wavefront controller to monitor and correct these errors, with broad implications for optical astronomy.

ADAPTIVE OPTICS SYSTEMS VIII (2022)

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Proceedings Paper Astronomy & Astrophysics

SCExAO, a testbed for developing high-contrast imaging technologies for ELTs

Kyohoon Ahn, Olivier Guyon, Julien Lozi, Sebastien Vievard, Vincent Deo, Nour Skaf, Ruslan Belikov, Steven P. Bos, Michael Bottom, Thayne Currie, Richard Frazin, Kyle Gorkom, Tyler D. Groff, Sebastiaan Y. Haffert, Nemanja Jovanovic, Hajime Kawahara, Takayuki Kotani, Jared R. Males, Frantz Martinache, Ben Mazin, Kelsey Miller, Barnaby Norris, Alexander Rodack, Alison Wong

Summary: The SCExAO instrument is a high-contrast imaging platform for the detection of exoplanets and protoplanetary disks, as well as a testbed for validating and deploying new high-contrast imaging approaches. It operates in multiple wavelength bands and continually seeks community involvement for development and upgrades.

TECHNIQUES AND INSTRUMENTATION FOR DETECTION OF EXOPLANETS X (2021)

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