ELT Imaging and Photometry in Crowded Fields
P. Linde^1,2, A. Ardeberg^1
1 Lund Observatory ² Malmo University
ELT crowded field imaging and photometry is a powerful tool in extragalactic astronomy. The success of such observations depends critically on a number of observational parameters. Important examples are aperture, Strehl ratio and atmospheric quality. Using modelling and simulations, the effects of these parameters have been studied in the regimes relevant for ELT design. Stellar populations have been simulated. The resulting (U)BV images have been used for evaluation of the observational parameters. Conclusions are drawn regarding the importance and mutual influence of telescope aperture, Strehl ratio and atmospheric quality.

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