Surface features in U-band of ITL devices for the LSST telescope

0540559 - FZÚ 2021 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Bajat, Armelle - Christov, Asen - Karpov, Sergey - Prouza, Michael
Surface features in U-band of ITL devices for the LSST telescope.
X-Ray Optical and Infrared Detectors for Astronomy IX. Bellingham: SPIE, 2020 - (Holland, A.; Beletic, J.), s. 1-10, č. článku 114542D. Proceedings of SPIE, 114542. ISBN 978-151063695-8. ISSN 0277-786X.
[X-Ray Optical and Infrared Detectors for Astronomy IX 2020. Online (US), 14.12.2020-18.12.2020]
Grant CEP: GA MŠMT EF15_003/0000437
Grant ostatní: OP VVV - CoGraDS(XE) CZ.02.1.01/0.0/0.0/15_003/0000437
Institucionální podpora: RVO:68378271
Klíčová slova: Vera Rubin Observatory * Dark Matter * CCD camera * Imaging Technology Laboratory
Obor OECD: Astronomy (including astrophysics,space science)
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11454/2559946/Surface-features-in-U-band-of-ITL-devices-for-the/10.1117/12.2559946.short

The LSST project (Large Survey for Space and Time), Vera Rubin Observatory is designed to observe the deep and wide Universe addressing the questions about dark matter as well as the near Universe with the study of the Milky Way. These observations are conducted by a high-resolution camera, which is made up of 189 4k×4k CCD sensors observing from the UV to the near-infrared. Some sensors supplied by ITL (Imaging Technology Laboratory), present a layer of cleaning residue or non-stoichiometric oxidized silicon adhering the surface after etching and create some non-uniformity in backside charging and irregularities inducing a variation of counting in UV and imprecise photometry. In this paper, we will present the camera and the particularities of the ITL sensors, then, the impact of this layer on the performances of the sensors and finally on the observed astronomical object.

Trvalý link: http://hdl.handle.net/11104/0318187