activity
20102024
most citedMagellan Adaptive Optics first-light observations of the exoplanet beta Pic b. II. 3-5 micron direct imaging with MagAO+Clio, and the empirical bolometric luminosity of a self-luminous giant planet

95 citations · 444 across the 18 of their papers we have counts for

collaborators
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14 papers · 1 filter

astro-ph.IM2024

Resolving the Young 2 Cygni Run-away Star into a Binary using iLocater

Justin R. Crepp, Jonathan Crass, Andrew J. Bechter +30

Precision radial velocity (RV) spectrographs that use adaptive optics (AO) show promise to advance telescope observing capabilities beyond those of seeing-limited designs. We are b…

astro-ph.IM2024

Little iLocater: paving the way for iLocater

Robert J. Harris, Jonathan Crass, Marshall C. Johnson +10

Diffraction-limited radial velocity instruments offer a pathway towards improved precision and stability, and the exploration of new parameter spaces at high spatial and spectral r…

astro-ph.IM2020★ 18 cited

Final Design and On-Sky Testing of the iLocater SX Acquisition Camera: Broadband Single-Mode Fiber Coupling

Jonathan Crass, Andrew Bechter, Brian Sands +22

Enabling efficient injection of light into single-mode fibers (SMFs) is a key requirement in realizing diffraction-limited astronomical spectroscopy on ground-based telescopes. SMF…

astro-ph.IM2016★ 37 cited

iLocater: A Diffraction-limited Doppler Spectrometer for the Large Binocular Telescope

Justin R. Crepp, Jonathan Crass, David King +31

We are developing a stable and precise spectrograph for the Large Binocular Telescope (LBT) named "iLocater." The instrument comprises three principal components: a cross-dispersed…

astro-ph.IM2014★ 3 cited

Pathfinder first light: alignment, calibration, and commissioning of the LINC-NIRVANA ground-layer adaptive optics subsystem

Derek Kopon, Al Conrad, Carmelo Arcidiacono +15

We present descriptions of the alignment and calibration tests of the Pathfinder, which achieved first light during our 2013 commissioning campaign at the LBT. The full LINC-NIRVAN…

astro-ph.IM2014

Laboratory Results and Status Update for Pathfinder at LBT, The LINC-NIRVANA NGS Ground- Layer AO Subsystem

Derek Kopon, Al Conrad, Thomas Bertram +20

The full LINC-NIRVANA instrument will be one of the most complex ground-based astronomical systems ever built. It will consist of multiple subsystems, including two multi-conjugate…