Diffraction-limited 800 nm imaging with the 2.56 m Nordic Optical Telescope J. E. Baldwin, R. N. Tubbs, G. C. Cox, C. D. Mackay, R. W. Wilson and M. I. Andersen A&A, 368 1 (2001) L1-L4 Published online: 15 March 2001 DOI: 10.1051/0004-6361:20010118