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Proceedings Paper

Optical alignment and testing of the Michelle spectrometer
Author(s): Eli Ettedgui-Atad; Alistair C. H. Glasse; T. E.C. Baillie; Ian R. Bryson; Garry F. Morrison; John Murray
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Paper Abstract

We describe the optical alignment and image quality testing of Michelle, the all-reflective mid-IR astronomical spectrometer and imager being built at the Royal Observatory Edinburgh for the UKIRT and GEMINI telescopes. The design strategy called for optical alignment by manufacture, with the only means for adjustment being the machining of sacrificial pads under key optical components. The success of this approach in meeting the alignment error budget is discussed, including the description of a method for identifying the optical axis of the optical train using field rotation. We present the result of image spot and wavefront error measurements and compare them with the instruments opto-mechanical specification.

Paper Details

Date Published: 21 August 1998
PDF: 7 pages
Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); doi: 10.1117/12.317224
Show Author Affiliations
Eli Ettedgui-Atad, Royal Observatory Edinburgh (United Kingdom)
Alistair C. H. Glasse, Royal Observatory Edinburgh (United Kingdom)
T. E.C. Baillie, Royal Observatory Edinburgh (United Kingdom)
Ian R. Bryson, Royal Observatory Edinburgh (United Kingdom)
Garry F. Morrison, Royal Observatory Edinburgh (United Kingdom)
John Murray, Royal Observatory Edinburgh (United Kingdom)

Published in SPIE Proceedings Vol. 3354:
Infrared Astronomical Instrumentation
Albert M. Fowler, Editor(s)

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