{"paper":{"title":"Paper II: Calibration of the Swift ultraviolet/optical telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. A. Breeveld, A. J. Blustin, A. N. Morgan, B. Hancock, C. Gronwall, D. Vanden Berk, E. A. Hoversten, F. E. Marshall, H. Huckle, K. McGowan, K. O. Mason, M. Carter, M. De Pasquale, M. Ivanushkina, M. J. Page, M. M. Chester, M. Siegel, M. Still, N. P. M. Kuin, P. A. Curran, P. Boyd, P. Broos, P. J. Brown, P. J. Smith, P. Roming, P. Schady, S. Immler, S. Koch, S. Oates, S. Rosen, S. T. Holland, T. Kennedy, T. S. Poole, V. Yershov, W. Landsman","submitted_at":"2010-04-14T16:41:21Z","abstract_excerpt":"The Ultraviolet/Optical Telescope (UVOT) is one of three instruments onboard the Swift observatory. The photometric calibration has been published, and this paper follows up with  details on other aspects of the calibration including a measurement of the point spread function with an assessment of the orbital variation and the effect on photometry. A correction for large scale variations in sensitivity over the field of view is described, as well as a model of the coincidence loss which is used to assess the coincidence correction in extended regions. We have provided a correction for the dete"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.2448","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":""},"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"}