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Your search keyword '"Fegan, D.J."' showing total 3 results
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3 results on '"Fegan, D.J."'

1. The Whipple Observatory 10m gamma-ray telescope, 1997–2006

Author

Kildea, J., Atkins, R.W., Badran, H.M., Blaylock, G., Bond, I.H., Bradbury, S.M., Buckley, J.H., Carter-Lewis, D.A., Celik, O., Chow, Y.C.K., Cui, W., Cogan, P., Daniel, M.K., de la Calle Perez, I., Dowdall, C., Duke, C., Falcone, A.D., Fegan, D.J., Fegan, S.J., and Finley, J.P.

Subjects
*IGNEOUS rocks, *ELECTRONIC systems, *ONLINE data processing, *SPACE sciences
Abstract

Abstract: Details are presented of the Whipple Observatory’s 10m atmospheric Cherenkov telescope and camera, as it evolved during the period 1997 until 2006. The design of the telescope and camera’s optical and electronic systems is discussed together with a detailed description of the four-stage GRANITE (Gamma-RAy New Imaging TElescope) upgrade program, undertaken during the same time period. The objective of the upgrade was to improve the telescope’s sensitivity for the detection of very-high-energy gamma-rays. Results from the program are provided and are briefly discussed in the context of the design of VERITAS. [Copyright &y& Elsevier]

Published
2007
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2. VERITAS: the Very Energetic Radiation Imaging Telescope Array System

Author

Krennrich, F., Bond, I.H., Boyle, P.J., Bradbury, S.M., Buckley, J.H., Carter-Lewis, D., Celik, O., Cui, W., Daniel, M., D'Vali, M., de la Calle Perez, I., Duke, C., Falcone, A., Fegan, D.J., Fegan, S.J., Finley, J.P., Fortson, L.F., Gaidos, J., Gammell, S., and Gibbs, K.

Subjects
*TELESCOPES, *ASTRONOMICAL instruments, *GAMMA rays, *PROTOTYPES
Abstract

The Very Energetic Radiation Imaging Telescope Array System (VERITAS) is the major next generation imaging atmospheric Cherenkov γ-ray telescope in the western hemisphere and will be located in southern Arizona nearby Kitt Peak National Observatory. The VERITAS observatory will provide unprecedented sensitivity to photon energies between 50 GeV and 50 TeV. The first stage is an array of four telescopes to be fully operational in early 2006, with an expansion to seven telescopes envisioned for 2008. The construction of a prototype telescope is underway, for which first light is expected in Fall 2003. The technical concept is outlined and a progress report is given. [Copyright &y& Elsevier]

Published
2004
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3. VERITAS: the Very Energetic Radiation Imaging Telescope Array System

Author

Weekes, T.C., Badran, H., Biller, S.D., Bond, I., Bradbury, S., Buckley, J., Carter-Lewis, D., Catanese, M., Criswell, S., Cui, W., Dowkontt, P., Duke, C., Fegan, D.J., Finley, J., Fortson, L., Gaidos, J., Gillanders, G.H., Grindlay, J., Hall, T.A., and Harris, K.

Subjects
*GAMMA ray detectors, *CHERENKOV counters, *TELESCOPES
Abstract

The Very Energetic Radiation Imaging Telescope Array System (VERITAS) represents an important step forward in the study of extreme astrophysical processes in the universe. It combines the power of the atmospheric Cherenkov imaging technique using a large optical reflector with the power of stereoscopic observatories using arrays of separated telescopes looking at the same shower. The seven identical telescopes in VERITAS, each of aperture 10 m, will be deployed in a filled hexagonal pattern of side 80 m; each telescope will have a camera consisting of 499 pixels with a field of view of 3.5°. VERITAS will substantially increase the catalog of very high energy (E>100 GeV) γ-ray sources and greatly improve measurements of established sources. [Copyright &y& Elsevier]

Published
2002
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