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IRIS: an Infrared Imager and Spectrometer for the Anglo-Australian Telescope

Published online by Cambridge University Press:  25 April 2016

David A. Allen ,
John R. Barton ,
Michael G. Burton ,
Helen Davies ,
Tony J. Farrell ,
Peter R. Gillingham ,
Allan F. Lankshear ,
Paul L. Lindner ,
Donald J. Mayfield  and
Vikki S. Meadows
...Show all authors
David A. Allen
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
John R. Barton
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
Michael G. Burton
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
Helen Davies
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
Tony J. Farrell
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
Peter R. Gillingham
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
Allan F. Lankshear
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
Paul L. Lindner
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
Donald J. Mayfield
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
Vikki S. Meadows
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
Gordon E. Schafer
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
Keith Shortridge
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
Jason Spyromilio
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
John O. Straede
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
Lewis G. Waller
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
Denis L. Whittard
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping NSW 2121
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Abstract

We describe a versatile infrared camera/spectrograph, IRIS, designed and constructed at the Anglo-Australian Observatory for use on the Anglo-Australian Telescope. A variety of optical configurations can be selected under remote control to provide several direct image scales and a few low-resolution spectroscopic formats. Two cross-dispersed transmission echelles are of novel design, as is the use of a modified Bowen-Burch system to provide a fast f/ratio in the widest-field option. The drive electronics includes a choice of readout schemes for versatility, and continuous display when the array is not taking data, to facilitate field acquisition and focusing.

The linearity of the detector has been studied in detail. Although outwardly good, slight nonlinearities prevent removal of fixed-pattern noise from the data without application of a cubic linearising function.

Specific control and data-reduction software has been written. We describe also a scanning mode developed for spectroscopic imaging.

Type
Instruments and Basic Astronomy
Information
Publications of the Astronomical Society of Australia , Volume 10 , Issue 4 , 1993 , pp. 298 - 309
Copyright
Copyright © Astronomical Society of Australia 1993

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