821 citations · 942 across the 10 of their papers we have counts for
10 papers
Adapting the pyramid wavefront sensor for pupil fragmentation of the ELT class telescopes
Nicolas Levraud, Vincent Chambouleyron, Olivier Fauvarque +8
The next generation of Extremely Large Telescope (24 to 39m diameter) will suffer from the so-called "pupil fragmentation" problem. Due to their pupil shape complexity (segmentatio…
Active deployable primary mirrors on CubeSat
Noah Schwartz, Maria Milanova, William Brzozowski +9
The volume available on small satellites restricts the size of optical apertures to a few centimetres, limiting the Ground-Sampling Distance (GSD) in the visible to typically 3 m a…
Direct imaging and spectroscopy of exoplanets with the ELT/HARMONI high-contrast module
Mathis Houllé, Arthur Vigan, Alexis Carlotti +9
Combining high-contrast imaging with medium-resolution spectroscopy has been shown to significantly boost the direct detection of exoplanets. HARMONI, one of the first-light instru…
Pyramid wavefront sensor optical gains compensation using a convolutional model
Vincent Chambouleyron, Olivier Fauvarque, Pierre Janin-Potiron +5
Extremely Large Telescopes have overwhelmingly opted for the Pyramid wavefront sensor (PyWFS) over the more widely used Shack-Hartmann WaveFront Sensor (SHWFS) to perform their Sin…
Design of the HARMONI Pyramid WFS module
Noah Schwartz, Jean-François Sauvage, Edgard Renault +12
Current designs for all three extremely large telescopes show the overwhelming adoption of the pyramid wavefront sensor (P-WFS) as the WFS of choice for adaptive optics (AO) system…
Adaptive optics for multifocal plane microscopy
Benjamin Gore, Noah Schwartz, Paul Dalgarno
Multifocal plane microscopy (MUM) allows three dimensional objects to be imaged in a single camera frame. Our approach uses dual orthogonal diffraction phase gratings with a quadra…
Laboratory Demonstration of an Active Optics System for High-Resolution Deployable CubeSat
Noah Schwartz, David Pearson, Stephen Todd +8
In this paper we present HighRes: a laboratory demonstration of a 3U CubeSat with a deployable primary mirror that has the potential of achieving high-resolution imaging for Earth…
Sensing and control of segmented mirrors with a pyramid wavefront sensor in the presence of spiders
Noah Schwartz, Jean-François Sauvage, Carlos Correia +9
The segmentation of the telescope pupil (by spiders & the segmented M4) create areas of phase isolated by the width of the spiders on the wavefront sensor (WFS), breaking the spati…
The adaptive optics modes for HARMONI: from Classical to Laser Assisted Tomographic AO
B. Neichel, T. Fusco, J. -F. Sauvage +25
HARMONI is a visible and NIR integral field spectrograph, providing the E-ELT's core spectroscopic capability at first light. HARMONI will work at the diffraction limit of the E-EL…
The CoRoT satellite in flight : description and performance
M. Auvergne, P. Bodin, L. Boisnard +3
CoRoT is a space telescope dedicated to stellar seismology and the search for extrasolar planets. The mission is led by CNES in association with French laboratories and has a large…