Physics – Optics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.8302l&link_type=abstract
American Astronomical Society, AAS Meeting #211, #83.02; Bulletin of the American Astronomical Society, Vol. 39, p.873
Physics
Optics
Scientific paper
We present the first results from a new instrument capable of diffraction-limited-resolution visible-light imaging on 5m-class telescopes. The new Palomar 200" LAMP instrument is an L3CCD-based Lucky Imaging backend camera to the PALMAO adaptive optics system. The camera records photon-counted images at 20-100 frames per second, covering up to 30 arcsec diameter fields. In postprocessing the highest quality frames, typically 10-20% of the dataset, are selected on the basis of Strehl ratio. The selected frames are drizzle-aligned to produce a final image with much improved resolution compared to standard AO long-exposure imaging. Over a six-night run the instrument typically produced images with 35-40 milli-arcsecond resolution and 5-20% Strehl ratios at 700nm.
Dekany Richard George
Ireland Mike
Law Nicholas M.
Mackay Craig D.
Moore Andrew
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