On-orbit calibration of the Ultraviolet/Optical Telescope (UVOT) on Swift: part 2

A. A. Breeveld; T. S. Poole; C. H. James; A. J. Blustin; S. R. Rosen; W. Landsman; P. Boyd; C. Gronwall; S. Holland; S. D. Hunsberger; M. Ivanushkina; K. O. Mason; K. McGowan; M. de Pasquale; P. W. A. Roming; M. Still

doi:10.1117/12.616817

15 September 2005 On-orbit calibration of the Ultraviolet/Optical Telescope (UVOT) on swift: part 2

A. A. Breeveld, T. S. Poole, C. H. James, A. J. Blustin, S. R. Rosen, W. Landsman, P. Boyd, C. Gronwall, S. Holland, S. D. Hunsberger, M. Ivanushkina, K. O. Mason, K. McGowan, M. de Pasquale, P. W. A. Roming, M. Still

Author Affiliations +

Proceedings Volume 5898, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV; 58981E (2005) https://doi.org/10.1117/12.616817
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

The Ultraviolet and Optical telescope (UVOT) on board the SWIFT observatory, plays an important part in the quest to understand gamma-ray bursts. As its name suggests, the UVOT obtains ultraviolet and optical data at high time resolution, with 7 broad band filters and 2 low resolution grisms. This paper forms the second of a pair of papers presenting the initial on-board calibration of the UVOT. The first one (Part 1) deals with distortion, large and small scale sensitivity variations and the telescope point spread function. In this paper we cover the following topics: the photometry of the broadband filters including colour transformations and linearity; the wavelength calibration and sensitivities of the grisms; time resolution and red leak.

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A. A. Breeveld, T. S. Poole, C. H. James, A. J. Blustin, S. R. Rosen, W. Landsman, P. Boyd, C. Gronwall, S. Holland, S. D. Hunsberger, M. Ivanushkina, K. O. Mason, K. McGowan, M. de Pasquale, P. W. A. Roming, and M. Still "On-orbit calibration of the Ultraviolet/Optical Telescope (UVOT) on swift: part 2", Proc. SPIE 5898, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV, 58981E (15 September 2005); https://doi.org/10.1117/12.616817

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KEYWORDS

Calibration

Stars

Optical filters

Ultraviolet radiation

Telescopes

Space telescopes

UV optics

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