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Papers by Daren Dillon

Research paper thumbnail of Laboratory demonstration of optimal identification and control of tip-tilt systems

Adaptive Optics Systems VIII, Aug 30, 2022

Research paper thumbnail of First laboratory demonstration of real-time multi-wavefront sensor single conjugate adaptive optics

arXiv (Cornell University), Aug 10, 2023

Research paper thumbnail of Daytime calibration and testing of the Keck All sky Precision Adaptive optics tomography system

Adaptive Optics Systems VIII

Research paper thumbnail of Preliminary lab demonstration of a 3-sided reflective pyramid wavefront sensor for Shane AO using SEAL testbed

Adaptive Optics Systems VIII

Research paper thumbnail of Laboratory demonstration of optimal identification and control of tip-tilt systems

Adaptive Optics Systems VIII

Research paper thumbnail of Motivation: Results: Contrast measurements

Research paper thumbnail of Developing adaptive secondary mirror concepts for the APF and W.M. Keck Observatory based on HVR technology

An Adaptive secondary mirror (ASM) allows for the integration of adaptive optics (AO) into the te... more An Adaptive secondary mirror (ASM) allows for the integration of adaptive optics (AO) into the telescope itself. Adaptive secondary mirrors, based on hybrid variable reluctance (HVR) actuator technology, developed by TNO, provide a promising path to telescope-integrated AO. HVR actuators have the advantage of allowing mirrors that are sti↵er, more power ecient, and potentially less complex than similar, voice-coil based ASM’s. We are exploring the application of this technology via a laboratory testbed that will validate the technical approach. In parallel, we are developing conceptual designs for ASMs at several telescopes including the Automated Planet Finder Telescope (APF) and for Keck Observatory. An ASM for APF has the potential to double the light through the slit for radial velocity measurements, and dramatically improved the image stability. An ASM for WMKO enables ground layer AO correction and lower background infrared AO observations, and provides for more flexible deplo...

Research paper thumbnail of Final A&T Stages of the Gemini Planet Finder

The Gemini Planet Imager (GPI) is currently in its final Acceptance & Testing stages. GPI is an X... more The Gemini Planet Imager (GPI) is currently in its final Acceptance & Testing stages. GPI is an XAO system based on a tweeter & woofer architecture (43 & 9 actuators respectively across the pupil), with the tweeter being a Boston Michromachines 64264^2642 MEMS device. The XAO AO system is tightly integrated with a Lyot apodizing coronagraph. Acceptance testing started in February 2013 at the University of California, Santa Cruz. A conclusive acceptance review was held in July 2013 and the instrument was found ready for shipment to the Gemini South telescope on Cerro Pachon, Chile. Commissioning at the telescope will take place by the end of 2013, matching the summer window of the southern hemisphere. According to current estimates the 3 year planet finding campaign (890 allocated hours) might discover, image, and spectroscopically analyze 20 to 40 new exo-planets. Final acceptance testing of the integrated instrument can always bring up surprises when using cold chamber and flexure rig ...

Research paper thumbnail of <title>Testing the APLC on the LAO ExAO testbed</title>

Adaptive Optics Systems, 2008

Research paper thumbnail of On-sky performance during verification and commissioning of the Gemini Planet Imager's adaptive optics system

Research paper thumbnail of On-sky low order non-common path correction of the GPI calibration unit

Research paper thumbnail of Wavefront control for the Gemini Planet Imager

Research paper thumbnail of <title>eXtreme Adaptive Optics Planet Imager: overview and status</title>

Advancements in Adaptive Optics, 2004

Research paper thumbnail of Extreme adaptive optics testbed: results and future work

Advancements in Adaptive Optics, 2004

Research paper thumbnail of ShaneAO: wide science spectrum adaptive optics system for the Lick Observatory

Research paper thumbnail of Opto-mechanical design of ShaneAO: the adaptive optics system for the 3-meter Shane Telescope

Research paper thumbnail of Swimming with ShARCS: comparison of on-sky sensitivity with model predictions for ShaneAO on the Lick Observatory 3-meter telescope

Research paper thumbnail of Automated alignment and on-sky performance of the Gemini planet imager coronagraph

Ground-based and Airborne Instrumentation for Astronomy V, 2014

Research paper thumbnail of Implementation of a Shack-Hartmann wavefront sensor for the measurement of embryo-induced aberrations using fluorescent microscopy

Research paper thumbnail of Wavefront aberration measurements and corrections through thick tissue using fluorescent microsphere reference beacons

Research paper thumbnail of Laboratory demonstration of optimal identification and control of tip-tilt systems

Adaptive Optics Systems VIII, Aug 30, 2022

Research paper thumbnail of First laboratory demonstration of real-time multi-wavefront sensor single conjugate adaptive optics

arXiv (Cornell University), Aug 10, 2023

Research paper thumbnail of Daytime calibration and testing of the Keck All sky Precision Adaptive optics tomography system

Adaptive Optics Systems VIII

Research paper thumbnail of Preliminary lab demonstration of a 3-sided reflective pyramid wavefront sensor for Shane AO using SEAL testbed

Adaptive Optics Systems VIII

Research paper thumbnail of Laboratory demonstration of optimal identification and control of tip-tilt systems

Adaptive Optics Systems VIII

Research paper thumbnail of Motivation: Results: Contrast measurements

Research paper thumbnail of Developing adaptive secondary mirror concepts for the APF and W.M. Keck Observatory based on HVR technology

An Adaptive secondary mirror (ASM) allows for the integration of adaptive optics (AO) into the te... more An Adaptive secondary mirror (ASM) allows for the integration of adaptive optics (AO) into the telescope itself. Adaptive secondary mirrors, based on hybrid variable reluctance (HVR) actuator technology, developed by TNO, provide a promising path to telescope-integrated AO. HVR actuators have the advantage of allowing mirrors that are sti↵er, more power ecient, and potentially less complex than similar, voice-coil based ASM’s. We are exploring the application of this technology via a laboratory testbed that will validate the technical approach. In parallel, we are developing conceptual designs for ASMs at several telescopes including the Automated Planet Finder Telescope (APF) and for Keck Observatory. An ASM for APF has the potential to double the light through the slit for radial velocity measurements, and dramatically improved the image stability. An ASM for WMKO enables ground layer AO correction and lower background infrared AO observations, and provides for more flexible deplo...

Research paper thumbnail of Final A&T Stages of the Gemini Planet Finder

The Gemini Planet Imager (GPI) is currently in its final Acceptance & Testing stages. GPI is an X... more The Gemini Planet Imager (GPI) is currently in its final Acceptance & Testing stages. GPI is an XAO system based on a tweeter & woofer architecture (43 & 9 actuators respectively across the pupil), with the tweeter being a Boston Michromachines 64264^2642 MEMS device. The XAO AO system is tightly integrated with a Lyot apodizing coronagraph. Acceptance testing started in February 2013 at the University of California, Santa Cruz. A conclusive acceptance review was held in July 2013 and the instrument was found ready for shipment to the Gemini South telescope on Cerro Pachon, Chile. Commissioning at the telescope will take place by the end of 2013, matching the summer window of the southern hemisphere. According to current estimates the 3 year planet finding campaign (890 allocated hours) might discover, image, and spectroscopically analyze 20 to 40 new exo-planets. Final acceptance testing of the integrated instrument can always bring up surprises when using cold chamber and flexure rig ...

Research paper thumbnail of <title>Testing the APLC on the LAO ExAO testbed</title>

Adaptive Optics Systems, 2008

Research paper thumbnail of On-sky performance during verification and commissioning of the Gemini Planet Imager's adaptive optics system

Research paper thumbnail of On-sky low order non-common path correction of the GPI calibration unit

Research paper thumbnail of Wavefront control for the Gemini Planet Imager

Research paper thumbnail of <title>eXtreme Adaptive Optics Planet Imager: overview and status</title>

Advancements in Adaptive Optics, 2004

Research paper thumbnail of Extreme adaptive optics testbed: results and future work

Advancements in Adaptive Optics, 2004

Research paper thumbnail of ShaneAO: wide science spectrum adaptive optics system for the Lick Observatory

Research paper thumbnail of Opto-mechanical design of ShaneAO: the adaptive optics system for the 3-meter Shane Telescope

Research paper thumbnail of Swimming with ShARCS: comparison of on-sky sensitivity with model predictions for ShaneAO on the Lick Observatory 3-meter telescope

Research paper thumbnail of Automated alignment and on-sky performance of the Gemini planet imager coronagraph

Ground-based and Airborne Instrumentation for Astronomy V, 2014

Research paper thumbnail of Implementation of a Shack-Hartmann wavefront sensor for the measurement of embryo-induced aberrations using fluorescent microscopy

Research paper thumbnail of Wavefront aberration measurements and corrections through thick tissue using fluorescent microsphere reference beacons

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