Custom CCD for adaptive optics applications

Downing, Mark; Arsenault, Robin; Baade, D.; Balard, Philippe; Bell, Ray; Burt, David; Denney, Sandy; Feautrier, Philippe; Fusco, Thierry; Gach, Jean-Luc; García, Joaquín; Guillaume, Christian; Hubin, N.; Jorden, Paul; Kasper, Markus; Meyer, Manfred; Pool, P.; Reyes, Javier Escalera; Skegg, Michael; Stadler, Eric; Suske, Wolfgang; Wheeler, Patrick

doi:10.1117/12.671330

Cited by 12 publications

(4 citation statements)

References 8 publications

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“…As the spacecraft will be located at the L2 position, communication limitations mean that exposure times will be relatively long. While the Euclid cosmic shear survey will benefit from space-based imaging over a wide field of view, there will be unique systematic effects that are required to be modelled, for example, charge transfer inefficiency (Holland et al 1990) and the brighter fatter effect (Downing et al 2006). Therefore, complementary observations at a similar level of space-based quality will be valuable in testing and confirming the measurements from Euclid.…”

Section: Tracing the Dark Matter In The Universementioning

confidence: 99%

GravityCam: Wide-field high-resolution high-cadence imaging surveys in the visible from the ground

Mackay

Dominik

Steele

et al. 2018

Publ. Astron. Soc. Aust.

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GravityCam is a new concept of ground-based imaging instrument capable of delivering significantly sharper images from the ground than is normally possible without adaptive optics. Advances in optical and near infrared imaging technologies allow images to be acquired at high speed without significant noise penalty. Aligning these images before they are combined can yield a 3-5 fold improvement in image resolution. By using arrays of such detectors, survey fields may be as wide as the telescope optics allows. We describe the instrument and detail its application to accelerate greatly the rate of detection of Earth size planets by gravitational microlensing. GravityCam will improve substantially the quality of weak shear studies of dark matter distribution in distant clusters of galaxies. An extensive microlensing survey will also provide a vast dataset for asteroseismology studies, and GravityCam promises to generate a unique data set on the population of the Kuiper belt and possibly the Oort cloud.

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Section: Tracing the Dark Matter In The Universementioning

confidence: 99%

GravityCam: Wide-field high-resolution high-cadence imaging surveys in the visible from the ground

Mackay

Dominik

Steele

et al. 2018

Publ. Astron. Soc. Aust.

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“…The CCD220 [14], [17] was developed by e2v on behalf of ESO and as a part of the JRA2 OPTICON network.…”

Section: E2v Ccd220mentioning

confidence: 99%

Detector developments at ESO to prepare for the E-ELT era

Downing¹,

Finger²,

Ives³

et al. 2014

SPIE Proceedings

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ESO has a very active on-going detector development program to not only meet the needs of the current crop of instruments for the VLT, but is also actively involved in gathering requirements and developing detectors for the challenging instruments being proposed and in design for the E-ELT. This paper provides an overall summary of the detector requirements of the various E-ELT instruments and the many interesting detector developments ESO is involved in to meet these needs. Most of these instruments and detector developments are described in more detail in other papers at this conference.

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“…The CCD220 8,9,10 (schematic in Fig. 2) is a 24 µm square 240x240 pixels split frame transfer back illuminated L3Vision CCD.…”

Section: The Ccd220 Designmentioning

confidence: 99%

The L3Vision CCD220 with its OCam test camera for AO applications in Europe

Feautrier¹,

Gach

Balard

et al. 2008

SPIE Proceedings

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ESO and JRA2 OPTICON have jointly funded e2v technologies to develop a custom CCD for Adaptive Optic Wave Front Sensor (AO WFS) applications. The device, called CCD220, is a compact Peltier-cooled 240x240 pixel frametransfer 8-output back-illuminated sensor. Using the electron-multiplying technology of L3Vision detectors, the device is designed to achieve sub-electron read noise at frame rates from 25 Hz to 1,500 Hz and dark current lower than 0.01 e-/pixel/frame. The development has many unique features. To obtain high frame rates, multiple EMCCD gain registers and metal buttressing of row clock lines are used. The baseline device is built in standard silicon. In addition, two speculative variants have been built; deep depletion silicon devices to improve red response and devices with an electronic shutter to extend use to Rayleigh and Pulsed Laser Guide Star applications. These are all firsts for L3Vision CCDs.These CCD220 detectors have now been fabricated by e2v technologies. This paper describes the design of the device, technology trade-offs, and progress to date. A Test Camera, called "OCam", has been specially designed and built for these sensors. Main features of the OCam camera are extensively described in this paper, together with first light images obtained with the CCD220.

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Custom CCD for adaptive optics applications

Cited by 12 publications

References 8 publications

GravityCam: Wide-field high-resolution high-cadence imaging surveys in the visible from the ground

GravityCam: Wide-field high-resolution high-cadence imaging surveys in the visible from the ground

Detector developments at ESO to prepare for the E-ELT era

The L3Vision CCD220 with its OCam test camera for AO applications in Europe

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