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CFHT Adaptive Optics Imaging of Active Galaxies

Published online by Cambridge University Press:  25 May 2016

J.B. Hutchings
J.B. Hutchings*
Affiliation:
National Research Council of Canada, Dominion Astrophysical Observatory, 5071 W. Saanich Rd, Victoria, B.C., Canada

Extract

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The CFHT adaptive optics camera uses a visible light guide signal from a star to operate a bimorph mirror. The system is a unit that is operated by the observer and can be used with CCD or HgCdTe detectors. Pixel sizes are of order 0.04″. The amount of correction varies as the guide star brightness, the angular distance from it, and the natural seeing at the time. With good CFHT conditions, a guide star of 13 mag will give JHK images of FWHM near to the diffraction limit (0.1 to 0.15″) up to 20″ away. Correction is worse in the optical, but images of 0.2″ or better can be obtained in R and I-band. The camera performance is described by Rigaut et al (1998).

Type
Nuclear Activity
Information
Symposium - International Astronomical Union , Volume 186: Galaxy Interactions at High and Low Redshift , 1999 , pp. 345 - 347
Copyright
Copyright © Kluwer 1999 

References

Rigaut, et al. 1998, PASP, in press Google Scholar