A Direct Measurement of Atmospheric Refraction in N-band AO Spectra: Implications for Mid-IR Systems on ELTs

Details A Direct Measurement of Atmospheric Refraction in N-band AO Spectra: Implications for Mid-IR Systems on ELTs A Direct Measurement of Atmospheric Refraction in N-band AO Spectra: Implications for Mid-IR Systems on ELTs

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21440919s&link_type=abstract

American Astronomical Society, AAS Meeting #214, #409.19; Bulletin of the American Astronomical Society, Vol. 41, p.674

Physics

Optics

Scientific paper

The next generation of large telescopes (ELTs) will be big enough that adaptive optics will be necessary to achieve diffraction-limited images in the mid-infrared. With an incredibly small diffraction-limit, some atmospheric physics that are currently ignored could have dominant effects on image quality. Here we present measurements of atmospheric refraction in the mid-infrared, from N-band AO spectroscopy on the 6.5 meter MMT. We find that atmospheric refraction will strongly degrade image quality on ELTs unless corrected with a mid-IR atmospheric dispersion corrector.

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