C-MORE : the laser guide star wavefront sensor. (arXiv:1910.00374v1 [astro-ph.IM])
<a href="http://arxiv.org/find/astro-ph/1/au:+Gach_J/0/1/0/all/0/1">J.L. Gach</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Boutolleau_D/0/1/0/all/0/1">D. Boutolleau</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Caillat_A/0/1/0/all/0/1">A. Caillat</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Feautrier_P/0/1/0/all/0/1">P. Feautrier</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pourcelot_R/0/1/0/all/0/1">R. Pourcelot</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Stadler_E/0/1/0/all/0/1">E. Stadler</a>
After releasing reference camera solutions in the visible and infrared for
natural guide star wavefront sensing with unbeaten performance, we will present
the first results of First Light Imaging s C-MORE, the first laser guide star
oriented wavefront sensor camera. Within the Opticon WP2 european funded
project (INFRAIA 2016-2017, Grant agreement n 730890), which has been set to
develop LGS cameras, fast path solutions based on existing sensors had to be
explored to provide working-proven cameras to ELT projects ready for the first
light schedule. Result of this study, C-MORE is a CMOS based camera with
1600×1100 pixels (9um pitch) and 500 FPS refresh rate. It has been developed to
answer most of the needs of future laser based adaptive optics systems (LGS) to
be deployed on 20-40m-class telescopes as well as on smaller ones. Using a
global shutter architecture, it won t introduce differential temporal errors on
the wavefront reconstruction and simplifies the whole command loop. We present
the global architecture of the camera, dimensions, weight, interfaces, its main
features and measured performance in terms of noise, dark current, quantum
efficiency and image quality which are the most important parameters for this
application. Because of the very low cost of this solution, this camera can be
used also in life-sciences and high end industrial applications, which was also
an objective of the Opticon project.
After releasing reference camera solutions in the visible and infrared for
natural guide star wavefront sensing with unbeaten performance, we will present
the first results of First Light Imaging s C-MORE, the first laser guide star
oriented wavefront sensor camera. Within the Opticon WP2 european funded
project (INFRAIA 2016-2017, Grant agreement n 730890), which has been set to
develop LGS cameras, fast path solutions based on existing sensors had to be
explored to provide working-proven cameras to ELT projects ready for the first
light schedule. Result of this study, C-MORE is a CMOS based camera with
1600×1100 pixels (9um pitch) and 500 FPS refresh rate. It has been developed to
answer most of the needs of future laser based adaptive optics systems (LGS) to
be deployed on 20-40m-class telescopes as well as on smaller ones. Using a
global shutter architecture, it won t introduce differential temporal errors on
the wavefront reconstruction and simplifies the whole command loop. We present
the global architecture of the camera, dimensions, weight, interfaces, its main
features and measured performance in terms of noise, dark current, quantum
efficiency and image quality which are the most important parameters for this
application. Because of the very low cost of this solution, this camera can be
used also in life-sciences and high end industrial applications, which was also
an objective of the Opticon project.
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