Advanced charge injection devices for space instruments

Miller, Kyle B.; Doughty, K.

doi:10.1117/12.508491

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…This initiative culminated in the fabrication of the CID816 imager. The device featured a pre-amplifier per row design and underwent a series of radiometric and radiation tests [21]. With a relatively small variation, CID816 (512 x 512 pixels) imager mean read noise was ~350 ewith QE values of 35%.…”

Section: Cidmentioning

confidence: 99%

Star Tracker Focal Plane Evaluation for the JIMO Mission

Jerebets

2006 IEEE Aerospace Conference

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The Jupiter Icy Moon Orbiter (JIMO) mission 1 was planned as the first implementation of Prometheus, an ambitious space exploration project proposed by NASA. The mission would provide a rigorous scientific investigation of Jupiter and three of its moons Callisto, Ganymede, and Europa. To safely and efficiently power and maneuver the spacecraft in deep space, novel technologies would be incorporated. 12 Though launch is currently indefinitely postponed, this mission, as conceived, already presents a significant technical challenge for a robust Attitude Control System (ACS) design due to severe radiation environment of the Jovian system, and because navigation sensors must survive and function properly throughout the mission. It is particularly relevant to a spacecraft's ACS that relies on star trackers for an accurate attitude determination. A star tracker focal plane is very susceptible to impinging charged particles and cosmic gamma rays. The radiation will degrade the device performance through false signal appearance and increased noise.

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Section: Cidmentioning

confidence: 99%

Star Tracker Focal Plane Evaluation for the JIMO Mission

Jerebets

2006 IEEE Aerospace Conference

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Extreme Contrast Ratio Imaging of Sirius with a Charge Injection Device

Batcheldor

Foadi

Bahr

et al. 2016

PASP

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The next fundamental steps forward in understanding our place in the universe could be a result of advances in extreme contrast ratio (ECR) imaging and point spread function (PSF) suppression. For example, blinded by quasar light we have yet to fully understand the processes of galaxy and star formation and evolution, and there is an ongoing race to obtain a direct image of an exoearth lost in the glare of its host star. To fully explore the features of these systems we must perform observations in which contrast ratios of at least one billion can be regularly achieved with sub 0.′′ 1 inner working angles. Here we present the details of a latest generation 32-bit charge injection device (CID) that could conceivably achieve contrast ratios on the order of one billion. We also demonstrate some of its ECR imaging abilities for astronomical imaging. At a separation of two arc minutes, we report a direct contrast ratio of ∆m v = 18.3, log (CR) = 7.3, or 1 part in 20 million, from observations of the Sirius field. The atmospheric conditions present during the collection of this data prevented less modest results, and we expect to be able to achieve higher contrast ratios, with improved inner working angles, simply by operating a CID at a world-class observing site. However, CIDs do not directly provide any PSF suppression. Therefore, combining CID imaging with a simple PSF suppression technique like angular differential imaging, could provide a cheap and easy alternative to the complex ECR techniques currently being employed.

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Advanced charge injection devices for space instruments

Cited by 2 publications

References 3 publications

Star Tracker Focal Plane Evaluation for the JIMO Mission

Star Tracker Focal Plane Evaluation for the JIMO Mission

Extreme Contrast Ratio Imaging of Sirius with a Charge Injection Device

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