{"paper":{"title":"The filter exchange system of the LSSTCam at the Vera C. Rubin Observatory","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Alexandre Boucaud, Anthony S. Johnson, Antoine Bernard, Aur\\'elien Marini, Claire Juramy-Gilles, Didier Laporte, Dmitry Onoprienko, \\'Eric Aubourg, Eric Lagorio, Fabrice Gallo, Fran\\c{c}oise Virieux, Francis Vezzu, Guillaume Daubard, Hannah M. M. Pollek, Herv\\'e Croizet, Johan Bregeon, Juan-Carlos Lazarte, Julien Cordian, Kevin Fanning, Margaux Lopez, Max Turri, Mile Kusulja, Patrick Breugnon, Pierre Antilogus, Pierre Karst, Stuart Marshall, T\\'eo Weicherding, Travis Lange, Yousuke Utsumi","submitted_at":"2026-06-30T17:31:02Z","abstract_excerpt":"The Filter Exchange System of the LSSTCam at the Vera C. Rubin Observatory is a critical subsystem enabling the Legacy Survey of Space and Time (LSST) by performing rapid, repeatable exchanges among five large-format filters within a highly constrained in-camera volume. Since the start of on-sky operations in April 2025, the FES has routinely performed up to 40 filter exchanges per night, completing each change in under 90 seconds with a positioning repeatability of 100 micrometers in the focal plane. Safety and reliability are ensured through a dedicated software architecture. Drawing on over"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.31995","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.31995/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}