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Proceedings Paper

DAzLE: the dark ages z (redshift) Lyman-α Explorer
Author(s): Anthony Horton; Ian Parry; Joss Bland-Hawthorn; Sonia Cianci; David King; Richard McMahon; Steve Medlen
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Paper Abstract

DAzLE is a near infrared narrowband differential imager being built by the Institute of Astronomy, Cambridge, in collaboration with the Anglo-Australian observatory. It is a special purpose instrument designed with a sole aim; the detection of redshifted Lyman-α emission from star forming galaxies at z>7. DAzLE will use pairs of high resolution (R=1000) narrowband filters to exploit low background 'windows' in the near infrared sky emission spectrum. This will enable it to reach sensitivities of ~2 x 10-21Wm-2, thereby allowing the detection of z>7 galaxies with star formation rates as low as a few solar masses per year. The design of the instrument, and in particular the crucial narrowband filters, are presented. The predicted performance of DAzLE, including the sensitivity, volume coverage and expected number counts, is discussed. The current status of the DAzLE project, and its projected timeline, are also presented.

Paper Details

Date Published: 30 September 2004
PDF: 11 pages
Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); doi: 10.1117/12.551591
Show Author Affiliations
Anthony Horton, Institute of Astronomy/Univ. of Cambridge (United Kingdom)
Ian Parry, Institute of Astronomy/Univ. of Cambridge (United Kingdom)
Joss Bland-Hawthorn, Anglo-Australian Observatory (Australia)
Sonia Cianci, Anglo-Australian Observatory (Australia)
David King, Institute of Astronomy/Univ. of Cambridge (United Kingdom)
Richard McMahon, Institute of Astronomy/Univ. of Cambridge (United Kingdom)
Steve Medlen, Institute of Astronomy/Univ. of Cambridge (United Kingdom)


Published in SPIE Proceedings Vol. 5492:
Ground-based Instrumentation for Astronomy
Alan F. M. Moorwood; Masanori Iye, Editor(s)

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