The Cerro Tololo Inter-American Observatory (CTIO), a division of the National Optical Astronomy Observatories (NOAO), located in La Serena, Chile, offers 10 week Undergraduate Research Assistantships to qualified undergraduates as part of the National Science Foundation funded Research Experiences for Undergraduates (REU) program. The program is usually run during the Chilean summer, January through March, both to offer students an alternative to the more common northern summer programs, and to encourage interaction with Chilean students visiting and working at CTIO throughout these months.

At the present time, we do not offer the REU program during the northern summer months of June through August. Students interested in programs during this period should investigate the opportunities provided at other REU sites and on the listings of summer programs maintained by the American Astronomical Society and the American Physical Society.