Adaptive optics high spectral resolution imaging of the planetary nebula IC 418

Details Adaptive optics high spectral resolution imaging of the planetary nebula IC 418 Adaptive optics high spectral resolution imaging of the planetary nebula IC 418

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997spie.3136..561b&link_type=abstract

Conference Paper, SPIE Proceedings, Vol. 3126, p. 561-568.

Physics

Optics

Adaptive Optics, Spectral Resolution, Image Resolution, Planetary Nebulae, Telescopes, Spatial Resolution, Etalons, Bromine, Helium

Scientific paper

We report narrowband adaptive optics NIR imaging of the planetary nebula IC418. Our 25.6 x 25.6-arcsec images were recorded with the SHARP II+ camera at the ESO 3.6-m telescope, using the adaptive optics system ADONIS. The high spatial resolution was combined with the high spectral resolution provided by two Fabry-Perot etalons and a circular variable filter. Here we present images in the Br-gamma and He I emission lines at 2.1655 and 2.0581 microns, respectively, and discuss their astrophysical implications. Our results show that combining adaptive optics techniques with high spectral resolution opens a wide field of astrophysical studies.

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