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arXiv · astro-ph/0203470

Diffraction-limited CCD imaging with faint reference stars

R. N. Tubbs·J. E. Baldwin·C. D. Mackay·G. C. Cox
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Abstract

By selecting short exposure images taken using a CCD with negligible readout noise we obtained essentially diffraction-limited 810 nm images of faint objects using nearby reference stars brighter than I=16 at a 2.56 m telescope. The FWHM of the isoplanatic patch for the technique is found to be 50 arcseconds, providing ~20% sky coverage around suitable reference stars.

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R. N. Tubbs, J. E. Baldwin, C. D. Mackay, G. C. Cox. 2002-03-26. Diffraction-limited CCD imaging with faint reference stars. https://doi.org/10.1051/0004-6361%3A20020477

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