SIM Lite: ground alignment of the instrument

2 August 2010 SIM Lite: ground alignment of the instrument

Frank G. Dekens, Renaud Goullioud, Fabien Nicaise, Gary Kuan, Mauricio Morales

Proceedings Volume 7734, Optical and Infrared Interferometry II; 77341K (2010) https://doi.org/10.1117/12.857183
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

We present the start of the ground alignment plan for the SIM Lite Instrument. We outline the integration and alignment of the individual benches on which all the optics are mounted, and then the alignment of the benches to form the Science and Guide interferometers. The Instrument has a guide interferometer with only a 40 arc-seconds field of regard, and 200 arc-seconds of alignment adjustability. This requires each sides of the interferometer to be aligned to a fraction of that, while at the same time be orthogonal to the baseline defined by the External Metrology Truss. The baselines of the Science and Guide interferometers must also be aligned to be parallel. The start of these alignment plans is captured in a SysML Instrument System model, in the form of activity diagrams. These activity diagrams are then related to the hardware design and requirements. We finish with future plans for the alignment and integration activities and requirements.

Citation Download Citation

Frank G. Dekens, Renaud Goullioud, Fabien Nicaise, Gary Kuan, and Mauricio Morales "SIM Lite: ground alignment of the instrument", Proc. SPIE 7734, Optical and Infrared Interferometry II, 77341K (2 August 2010); https://doi.org/10.1117/12.857183

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