Performance of coronagraph on AEOS 3.6-m adaptive optics telescope

Details Performance of coronagraph on AEOS 3.6-m adaptive optics telescope Performance of coronagraph on AEOS 3.6-m adaptive optics telescope

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4860..311r&link_type=abstract

High-Contrast Imaging for Exo-Planet Detection. Edited by Alfred B. Schultz. Proceedings of the SPIE, Volume 4860, pp. 311-314

Physics

Optics

1

Scientific paper

Adaptive optics (AO) is useful in correcting the blurring effects of the atmosphere responsible for most energy in the halo of the point spread function. A coronagraph can further enhance faint companion searches by reducing the diffraction rings surrounding a well corrected image peak. Here, we use a coronagraph on the Advanced Electro-Optical System (AEOS) at the Maui Space Surveillance Complex (MSSC) to test these benefits. The spatial characteristics of the scattered energy produced at AEOS are explored from the viewpoint of searching for faint stellar companions. The benefit of using AO is found to be 3 to 4.5 stellar magnitudes for a ten second integration time at 1 to 2 microns, with the most benefit at radial distances less than one arcsecond. More advanced AO/coronagraphic systems should be able to produce even better results. Using AO and a coronagraph should be strongly considered when attempting to image faint companions.

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