Translator Disclaimer
10 July 2008 Imaging the dense stellar cluster R136 with VLT-MAD
Author Affiliations +
We evaluate the performance of the Multi-conjugate Adaptive optics Demonstrator (MAD) from H and Ks imaging of 30 Doradus in the Large Magellanic Cloud. Maps of the full-width half maximum (FWHM) of point sources in the H and Ks images are presented, together with maps of the Strehl ratio achieved in the Ks-band observations. Each of the three natural guide stars was at the edge of the MAD field-of-view, and the observations were obtained at relatively large airmass (1.4-1.6). Even so, the Strehl ratio achieved in the second pointing (best-placed compared to the reference stars) ranged from 15% to an impressive 30%. Preliminary photometric calibration of the first pointing indicates 5σ sensitivities of Ks~21.75 and H~22.25 (from 22 and 12 min exposures, respectively).
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. A. Campbell, C. J. Evans, J. Ascenso, A. J. Longmore, J. Kolb, M. Gieles, and J. Alves "Imaging the dense stellar cluster R136 with VLT-MAD", Proc. SPIE 7015, Adaptive Optics Systems, 70152C (10 July 2008);

Back to Top