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Proceedings Paper

The in-flight spectroscopic performance of the Swift XRT CCD camera
Author(s): Julian P. Osborne; A. P. Beardmore; O. Godet; A. F. Abbey; M. R. Goad; K. L. Page; A. A. Wells; L. Angelini; D. N. Burrows; S. Campana; G. Chincarini; O. Citterio; G. Cusumano; P. Giommi; J. E. Hill; J. Kennea; V. LaParola; V. Mangano; T. Mineo; A. Moretti; J. A. Nousek; C. Pagani; M. Perri; P. Romano; G. Tagliaferri; F. Tamburelli
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Paper Abstract

The Swift X-ray Telescope (XRT) focal plane camera is a front-illuminated MOS CCD, providing a spectral response kernel of 144 eV FWHM at 6.5 keV. We describe the CCD calibration program based on celestial and on-board calibration sources, relevant in-flight experiences, and developments in the CCD response model. We illustrate how the revised response model describes the calibration sources well. Loss of temperature control motivated a laboratory program to re-optimize the CCD substrate voltage, we describe the small changes in the CCD response that would result from use of a substrate voltage of 6V.

Paper Details

Date Published: 18 August 2005
PDF: 8 pages
Proc. SPIE 5898, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV, 589817 (18 August 2005); doi: 10.1117/12.617149
Show Author Affiliations
Julian P. Osborne, Univ. of Leicester (United Kingdom)
A. P. Beardmore, Univ. of Leicester (United Kingdom)
O. Godet, Univ. of Leicester (United Kingdom)
A. F. Abbey, Univ. of Leicester (United Kingdom)
M. R. Goad, Univ. of Leicester (United Kingdom)
K. L. Page, Univ. of Leicester (United Kingdom)
A. A. Wells, Univ. of Leicester (United Kingdom)
L. Angelini, NASA-GSFC (United States)
D. N. Burrows, Pennsylvania State Univ. (United States)
S. Campana, INAF-Osservatorio di Brera (Italy)
G. Chincarini, INAF-Osservatorio di Brera (Italy)
O. Citterio, INAF-Osservatorio di Brera (Italy)
G. Cusumano, INAF-IASF (Italy)
P. Giommi, ASI-ASDC (Italy)
J. E. Hill, NASA-GSFC (United States)
USRA (United States)
J. Kennea, Pennsylvania State Univ. (United States)
V. LaParola, INAF-IASF (Italy)
V. Mangano, INAF-IASF (Italy)
T. Mineo, INAF-IASF (Italy)
A. Moretti, INAF-Osservatorio di Brera (Italy)
J. A. Nousek, Pennsylvania State Univ. (United States)
C. Pagani, Pennsylvania State Univ. (United States)
M. Perri, ASI-ASDC (Italy)
P. Romano, INAF-Osservatorio di Brera (Italy)
G. Tagliaferri, INAF-Osservatorio di Brera (Italy)
F. Tamburelli, ASI-ASDC (Italy)

Published in SPIE Proceedings Vol. 5898:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV
Oswald H. W. Siegmund, Editor(s)

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