Derek Kopon
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View article: Resolving the Young 2 Cygni Runaway Star into a Binary Using iLocater
Resolving the Young 2 Cygni Runaway Star into a Binary Using iLocater Open
Precision radial velocity spectrographs that use adaptive optics (AO) show promise to advance telescope observing capabilities beyond those of seeing-limited designs. We are building a spectrograph for the Large Binocular Telescope (LBT) n…
View article: Little iLocater: paving the way for iLocater
Little iLocater: paving the way for iLocater Open
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 resolution. However, achieving the necessary performance req…
View article: Resolving the Young 2 Cygni Run-away Star into a Binary using iLocater
Resolving the Young 2 Cygni Run-away Star into a Binary using iLocater Open
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 building a spectrograph for the Large Binocular Telescope (L…
View article: Little iLocater: paving the way for iLocater
Little iLocater: paving the way for iLocater Open
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 resolution. However, achieving the necessary performance req…
View article: Sensitivity comparison of a NURBS freeform telescope
Sensitivity comparison of a NURBS freeform telescope Open
We compare the optical performance, alignment sensitivity, and thermal stability of a Non-Uniform Rational B-Spline (NURBS) freeform telescope design to two more conventional design forms with the goal of facilitating acceptance of this ne…
View article: The wide field phasing testbed for the Giant Magellan Telescope
The wide field phasing testbed for the Giant Magellan Telescope Open
Phasing the seven segment pairs of the doubly segmented Giant Magellan Telescope over an extended field of view requires measuring wavefront piston at multiple field locations. This will be done using a dispersed fringe sensor in each of f…
View article: Final design and on-sky testing of the iLocater SX acquisition camera: broad-band single-mode fibre coupling
Final design and on-sky testing of the iLocater SX acquisition camera: broad-band single-mode fibre coupling Open
Enabling efficient injection of light into single-mode fibres (SMFs) is a key requirement in realizing diffraction-limited astronomical spectroscopy on ground-based telescopes. SMF-fed spectrographs, facilitated by the use of adaptive opti…
View article: Phasing the GMT with a next generation e-APD dispersed fringe sensor: design and on-sky prototyping
Phasing the GMT with a next generation e-APD dispersed fringe sensor: design and on-sky prototyping Open
The GMT will be a 25.4-meter telescope consisting of 7 primary and secondary mirror segments that must be phased to within a fraction of an imaging wavelength in order to achieve diffraction limited performance.The need to use off-axis gui…
View article: On-sky demonstration of the GMT dispersed fringe phasing sensor prototype on the Magellan Telescope
On-sky demonstration of the GMT dispersed fringe phasing sensor prototype on the Magellan Telescope Open
The GMT is an aplanatic Gregorian telescope consisting of 7 primary and secondary mirror segments that must be phased to within a fraction of an imaging wavelength to allow the 25.4 meter telescope to reach its diffraction limit. When oper…