Imaging the dense stellar cluster R136 with VLT-MAD
- Author(s)
- M. A. Campbell, C. J. Evans, J. Ascenso, A. J. Longmore, J. Kolb, M. Gieles, J. Alves
- Abstract
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 ofKs~21.75 and H~22.25 (from 22 and 12 min exposures,respectively).
- Organisation(s)
- External organisation(s)
- Universidade do Porto, European Southern Observatory (Germany), The Royal Observatory, Edinburgh, European Southern Observatory (Chile), Centro Astronómico Hispano Alemán (CAHA)
- Journal
- Proceedings of SPIE
- Volume
- 7015
- ISSN
- 0277-786X
- DOI
- https://doi.org/10.1117/12.788964
- Publication date
- 07-2008
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103004 Astrophysics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/imaging-the-dense-stellar-cluster-r136-with-vltmad(f0682929-6c2b-4caf-97dd-5a37b72e32eb).html