Optical alignment and testing of the Michelle spectrometer

Eli Ettedgui-Atad; Alistair C. H. Glasse; T. E.C. Baillie; Ian R. Bryson; Garry F. Morrison; John Murray

doi:10.1117/12.317224

21 August 1998 Optical alignment and testing of the Michelle spectrometer

Eli Ettedgui-Atad, Alistair C. H. Glasse, T. E.C. Baillie, Ian R. Bryson, Garry F. Morrison, John Murray

Proceedings Volume 3354, Infrared Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.317224
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

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.

Citation Download Citation

Eli Ettedgui-Atad, Alistair C. H. Glasse, T. E.C. Baillie, Ian R. Bryson, Garry F. Morrison, and John Murray "Optical alignment and testing of the Michelle spectrometer", Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); https://doi.org/10.1117/12.317224

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