Baldwin, J., Tubbs, R., Cox, G., Mackay, C., Wilson, R., & Andersen, M. (2001). Diffraction-limited 800 nm imaging with the 2.56 m Nordic optical telescope. Astronomy & Astrophysics, 368(1), L1-L4. https://doi.org/10.1051/0004-6361%3A20010118