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

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Mackay_2018_GravityCam_PASA_AAM.pdf (3.928Mb)
Date
27/12/2018
Author
Mackay, C.
Dominik, M.
Steele, I. A.
Snodgrass, C.
Jørgensen, U. G.
Skottfelt, J.
Stefanov, K.
Carry, B.
Braga-Ribas, F.
Doressoundiram, A.
Ivanov, V. D.
Gandhi, P.
Evans, D. F.
Hundertmark, M.
Serjeant, S.
Ortolani, S.
Keywords
Gravitational lensing: micro
Gravitational lensing: weak
Kuiper belt: general
(stars:) planetary systems
QB Astronomy
QC Physics
T-NDAS
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Abstract
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 2.5 to 3 fold improvement in image resolution. By using arrays of such detectors, survey fields may be as wide as the telescope optics allows. Consequently, GravityCam enables both wide-field high-resolution imaging and high-speed photometry. We describe the instrument and detail its application to provide demographics of planets and satellites down to Lunar mass (or even below) across the Milky Way. GravityCam is also suited to improve the quality of weak shear studies of dark matter distribution in distant clusters of galaxies and multiwavelength follow-ups of background sources that are strongly lensed by galaxy clusters. The photometric data arising from an extensive microlensing survey will also be useful for asteroseismology studies, while GravityCam can be used to monitor fast multiwavelength flaring in accreting compact objects, and promises to generate a unique data set on the population of the Kuiper belt and possibly the Oort cloud.
Citation
Mackay , C , Dominik , M , Steele , I A , Snodgrass , C , Jørgensen , U G , Skottfelt , J , Stefanov , K , Carry , B , Braga-Ribas , F , Doressoundiram , A , Ivanov , V D , Gandhi , P , Evans , D F , Hundertmark , M , Serjeant , S & Ortolani , S 2018 , ' GravityCam : wide-field high-resolution high-cadence imaging surveys in the visible from the ground ' , Publications of the Astronomical Society of Australia , vol. 35 , e047 . < http://adsabs.harvard.edu/abs/2017arXiv170900244M >
Publication
Publications of the Astronomical Society of Australia
Status
Peer reviewed
ISSN
1323-3580
Type
Journal article
Rights
© 2018, Astronomical Society of Australia. This work has been made available online in accordance with the publisher's policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1017/pasa.2018.43
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  • University of St Andrews Research
URL
http://adsabs.harvard.edu/abs/2017arXiv170900244M
URI
http://hdl.handle.net/10023/17983

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