11 papers
The Roman Coronagraph Community Participation Program: pre-launch reference star list and impact of reference star properties on post-processing performance
Justin Hom, Schuyler G. Wolff, Jessica Gersh-Range +51
The upcoming Roman Coronagraph will be the first high-contrast instrument in space capable of high-order wavefront sensing and control technologies, a critical technology demonstra…
Comparing realtime optical gain measurement and methods on MagAO-X
Eden McEwen, Jared R. Males, Olivier Guyon +20
A lingering technical challenge for pyramid wavefront sensors (PyWFS) is their change in response between calibration and correction residuals, a quantity known as optical gain (OG…
Closed-loop Atmospheric Dispersion Correction for High-Contrast Imaging with MagAO-X
Katie Twitchell, Sebastiaan Haffert, Jared R. Males +17
Incoming starlight is refracted as it enters Earth's atmosphere from the vacuum of space. The wavelength-dependence of atmospheric refraction causes elongation of the broadband PSF…
Sensor fusion on MagAO-X: real time vibration control using accelerometers
Parker T. Johnson, Jared R. Males, Povilas Palunas +16
Mechanical vibrations are a significant source of residual wavefront error (WFE) in adaptive optics (AO) systems, limiting the performance of high-contrast imaging instruments. We…
On-sky dark hole diggin' with implicit Electric Field Conjugation on MagAO-X
S. Y. Haffert, J. Liberman, J. R. Males +17
Direct spectroscopy is very promising approach to characterizing the atmospheres of nearby rocky exoplanets. Non-common path aberrations (NCPA) are differential aberrations between…
A Multiband Study of the HR 4796A Disk in the Optical Using MagAO-X
Jay K. Kueny, Alycia J. Weinberger, Zhe-Yu Daniel Lin +18
We present total intensity images of the debris disk around HR 4796A from observations spanning 2023 to 2025 with the Magellan extreme adaptive optics instrument (MagAO-X). We dete…