Wavefront outer scale and seeing measurements at San Pedro Mártir Observatory R. Conan, R. Avila, L. J. Sánchez, A. Ziad, F. Martin, J. Borgnino, O. Harris, S. I. González, R. Michel and D. Hiriart A&A, 396 2 (2002) 723-730 Published online: 03 December 2002 DOI: 10.1051/0004-6361:20021323