Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008spie.7017e...5t&link_type=abstract
Modeling, Systems Engineering, and Project Management for Astronomy III. Edited by Angeli, George Z.; Cullum, Martin J. Proc
Astronomy and Astrophysics
Astronomy
Scientific paper
Efficient assignment of science targets to the individual channels of a multi-object astronomical instrument, such as EAGLE for the European Extremely Large Telescope (E-ELT), is crucial for maximising the utility of the instrument. This paper presents the results obtained by modelling the efficiencies of various pick-off system concepts: free standing Pick-Off Mirrors (POMs), POMs at the tip of moving arms, or a tiled focal plane. Consideration is also taken of the way in which the freestanding POMs are placed: by a pick and place robot, or a swarm of micro autonomous robots. Allocation algorithms were developed for each concept and applied to target fields which are representative of EAGLE's likely science cases. It is shown how the results of the modelling were used to generate a new system comparison criterion called Allocation Flexibility and how this influences the choice of the baseline solution. The allocation flexibility suggests that the best system will use free standing POMs with as small a footprint as possible, which reflect light to a raised beam steering mirror.
Evans Chris J.
Schnetler Hermine
Taylor William D.
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