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Reverification and defect evolution in the LSST Camera

POSTER

Abstract

The LSST Camera (LSSTCam), the largest ever constructed, arrived at the Rubin Observatory at the summit of Cerro Pachón, Chile, in May 2024 and began re-verification in September 2024. All LSSTCam re-verification data is processed through calibration products (CP) and electro-optical (EO) analysis pipelines. The dark and bright defect data products from EO pipelines are two vital metrics for characterizing LSSTCam performance, enabling the quantification of sensor imperfections and their evolution over time. Defect data products have existed since early integration tests but have not been studied comprehensively across different test sites. We also had an impediment in previous testing campaigns, resulting in fine-scale variations in flat-field projections. Here, we report LSSTCam re-verification results, the evolution of defects in the camera from early integration to summit re-verification, the mitigation of flat-field variation in EO testing, and the current status of commissioning LSSTCam into the Simonyi Survey Telescope.

Presenters

  • Sean P MACBRIDE

    University of zurich

Authors

  • Sean P MACBRIDE

    University of zurich

  • Yousuke Utsumi

    National Astronomical Observatory of Japan, SLAC National Accelerator Laboratory

  • Stuart Marshall

    SLAC National Accelerator Laboratory

  • John Banovetz

    Brookhaven National Laboratory

  • Kevin Fanning

    SLAC National Acceleratory Laboratory

  • Andy Rasmussen

    SLAC National Accelerator Laboratory

  • James Chiang

    SLAC National Accelerator Laboratory

  • Aaron Roodman

    SLAC National Accelerator Laboratory

  • Tony Johnson

    SLAC National Accelerator Laboratory

  • Gregg Thayer

    SLAC National Accelerator Laboratory

  • Thibault Guillemin

    Laboratoire de l'Accélérateur Linéaire (LAL), Centre Scientifique d'Orsay

  • Johan Bregeon

    CNRS/IN2P3/LPSC Grenoble

  • Pierre Antilogus

    IN2P3

  • Johnny Esteves

    Harvard University

  • Tony Tyson

    UC-Davis

  • Brian Stalder

    Rubin Observatory

  • Shuang Liang

    SLAC Linear Accelerator Laboratory

  • Zhuoqi Zhang

    SLAC Linear Accelerator Laboratory

  • HyeYun Park

    Duke University