Imaging the dense stellar cluster R136 with VLT-MAD

M. A. Campbell; C. J. Evans; J. Ascenso; A. J. Longmore; J. Kolb; M. Gieles; J. Alves

doi:10.1117/12.788964

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).

Original language	English
Article number	70152C
Journal	Proceedings of SPIE
Volume	7015
DOIs	https://doi.org/10.1117/12.788964
Publication status	Published - 1 Jul 2008
Externally published	Yes
Event	Adaptive Optics Systems - Marseille, France Duration: 23 Jun 2008 → …

Austrian Fields of Science 2012

103004 Astrophysics

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10.1117/12.788964

http://adsabs.harvard.edu/abs/2008SPIE.7015E..2CC

Cite this

@article{f06829296c2b4caf97dd5a37b72e32eb,

title = "Imaging the dense stellar cluster R136 with VLT-MAD",

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).",

author = "Campbell, {M. A.} and Evans, {C. J.} and J. Ascenso and Longmore, {A. J.} and J. Kolb and M. Gieles and J. Alves",

year = "2008",

month = jul,

day = "1",

doi = "10.1117/12.788964",

language = "English",

volume = "7015",

journal = "Proceedings of SPIE",

issn = "0277-786X",

publisher = "International Society for Optical Engineering (SPIE)",

note = "Adaptive Optics Systems ; Conference date: 23-06-2008",

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TY - JOUR

T1 - Imaging the dense stellar cluster R136 with VLT-MAD

AU - Campbell, M. A.

AU - Evans, C. J.

AU - Ascenso, J.

AU - Longmore, A. J.

AU - Kolb, J.

AU - Gieles, M.

AU - Alves, J.

PY - 2008/7/1

Y1 - 2008/7/1

N2 - 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).

AB - 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).

U2 - 10.1117/12.788964

DO - 10.1117/12.788964

M3 - Meeting abstract/Conference paper

SN - 0277-786X

VL - 7015

JO - Proceedings of SPIE

JF - Proceedings of SPIE

M1 - 70152C

T2 - Adaptive Optics Systems

Y2 - 23 June 2008

ER -

Imaging the dense stellar cluster R136 with VLT-MAD

Abstract

Austrian Fields of Science 2012

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